2025 연구성과 (12 / 151)

※ 컨트롤 + 클릭으로 열별 다중 정렬 가능합니다.
Excel 다운로드
WoS SCOPUS Document Type Document Title Abstract Authors Affiliation ResearcherID (WoS) AuthorsID (SCOPUS) Author Email(s) Journal Name JCR Abbreviation ISSN eISSN Volume Issue WoS Edition WoS Category JCR Year IF JCR (%) FWCI ⓘ FWCI Update Date WoS Citation SCOPUS Citation Keywords (WoS) KeywordsPlus (WoS) Keywords (SCOPUS) KeywordsPlus (SCOPUS) Language Publication Stage Publication Year Publication Date DOI JCR Link DOI Link WOS Link SCOPUS Link
○ Article ⓘ Higher-order caputo fractional integrodifferential inclusions of Volterra–Fredholm type with impulses and infinite delay: existence results ⓘ This study explores a new type of impulsive nonlocal Caputo fractional dynamical differential inclusions of order 1<ϱ<2 in Banach space. The major goal is to identify mild solutions for impulsive nonlocal Caputo fractional Volterra–Fredholm integrodifferential inclusions with infinite delay. We use methods from fractional calculus, Dhage’s fixed-point concepts, integrodifferential equations, abstract phase space Bg, multivalued analysis, and sectorial operator of type (P,κ,ϱ,γ) to establish the necessary circumstances for the existence of mild solutions to these problems. Illustrative examples are provided to support the theoretical results and demonstrate their practical application. © The Author(s) under exclusive licence to Korean Society for Informatics and Computational Applied Mathematics 2025. ⓘ Raja, Marimuthu Mohan; Vijayakumar, Velusamy; Veluvolu, Kalyana Chakravarthy ⓘ School of Electronics Engineering, Kyungpook National University, Daegu, 41566, South Korea; Department of Mathematics, School of Advanced Sciences, Vellore Institute of Technology, Tamil Nadu, Vellore, 632 014, India; School of Electronics Engineering, Kyungpook National University, Daegu, 41566, South Korea ⓘ ⓘ 57327789300; 55401798400; 8703318200 ⓘ veluvolu@ee.knu.ac.kr; ⓘ Journal of Applied Mathematics and Computing ⓘ J APPL MATH COMPUT ⓘ 1598-5865 1865-2085 SCIE MATHEMATICS, APPLIED;MATHEMATICS ⓘ 2024 2.7 3.0 0 2025-05-07 ⓘ 2 ⓘ ⓘ Impulsive systems; Infinite delay; Integrodifferential equations; Non-integer order differential equations; Nonlocal conditions; Sectorial operators ⓘ Banach spaces; Differentiation (calculus); Fixed point arithmetic; Fredholm integral equations; Mathematical operators; Phase space methods; High-order; Impulsive systems; Infinite delay; Integer order; Mild solution; Non-integer order differential equation; Non-local conditions; Nonlocal; Sectorial operator; Volterra-Fredholm; Integrodifferential equations ⓘ English Article in press 2025 10.1007/s12190-025-02412-4 ⓘ 바로가기 바로가기 바로가기
○ ○ Article ⓘ Interfacial modulation of Cu2S/CuS nanodomains embedded in MOF-derived carbon matrix on hollow-structured titanoniobate for ultrastable sodium-ion batteries ⓘ Two-dimensional titanoniobate (TiNbO5/Ti2Nb2O9) nanosheets, characterized by their wide interlayer spacing and high ionic conductivity, are promising anode materials for sodium-ion batteries (SIBs), offering high-rate capability and long-term cycling stability. Therefore, this study aims to develop a novel TiNbO5/Ti2Nb2O9based hybrid anode material-Cu2S/CuS/N-doped nanocarbon-coated TiNbO5/Ti2Nb2O9 hollow spheres (Cu2S/ CuS/NNC/TNO-HS)-designed for high-rate capability and long-term stability in SIB anodes. This hierarchical hollow-sphere nanoarchitecture was fabricated through a layer-by-layer self-assembly strategy using N-doped Cu-BTC metal-organic frameworks (N-Cu-BTC-MOF, also known as N-HKUST-1), followed by sulfurization and carbonization processes. TiNbO5/Ti2Nb2O9 nanosheets served as robust structural scaffolds, offering wide interlayer spacing and superior ionic conductivity. Simultaneously, the Cu2S/CuS and N-doped nanocarbon layers enhanced electrical conductivity while introducing abundant redox-active sites. The resulting composite effectively mitigated volume changes during cycling, reduced interfacial resistance, and facilitated rapid ion diffusion. The Cu2S/CuS/NNC/TNO-HS anode demonstrated outstanding long-term performance, maintaining a reversible capacity of 356.6 mA h g- 1 after 1,000 cycles at 100 mA g- 1 and 137.4 mA h g- 1 after 3,000 cycles at 5.0 A g- 1 with 89 % capacity retention. The composite also exhibited superior rate capability and stable pseudocapacitive behavior, highlighting its potential as a high-performance anode material for large-scale SIB energy storage systems. ⓘ Lee, Minseop; Park, Hee-Jun; Paek, Seung-Min ⓘ Kyungpook Natl Univ, Dept Chem, Daegu 41566, South Korea ⓘ Lee, Minseop/JVZ-7552-2024; Paek, Seung-Min/E-4667-2011 ⓘ 57201550392; 59664296800; 7102686289 ⓘ smpaek@knu.ac.kr; ⓘ CHEMICAL ENGINEERING JOURNAL ⓘ CHEM ENG J ⓘ 1385-8947 1873-3212 516 SCIE ENGINEERING, CHEMICAL;ENGINEERING, ENVIRONMENTAL ⓘ 2024 13.2 3.0 0 2025-06-11 ⓘ 0 1 Sodium-ion batteries; Titanoniobate; Metal-organic framework; Copper sulfides; Anodes ⓘ DOPED GRAPHENE; SUPERIOR ANODE; LITHIUM; NANOSHEETS; PERFORMANCE; DEGRADATION; REDUCTION; OXIDE; DECONVOLUTION; INTERCALATION ⓘ Anodes; Copper sulfides; Metal-organic framework; Sodium-ion batteries; Titanoniobate ⓘ Carbon carbon composites; Hybrid composites; Layered semiconductors; Nanocarbon; Nanosheets; Scaffolds; Supersaturation; Anode material; Copper sulphides; High rate capability; Interlayer spacings; Metalorganic frameworks (MOFs); N-doped; Nanocarbons; Nanodomain; Sodium ion batteries; Titanoniobate; Sodium-ion batteries ⓘ English 2025 2025-07-15 10.1016/j.cej.2025.163853 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Laparoscopic Pylorus-preserving Gastrectomy Versus Distal Gastrectomy for Early Gastric Cancer: A Multicenter Randomized Controlled Trial (KLASS-04) ⓘ Objective:To evaluate the long-term outcomes of laparoscopic pylorus-preserving gastrectomy (LPPG) with laparoscopic distal gastrectomy (LDG) for early gastric cancer. Background:Pylorus-preserving gastrectomy is considered a function-preserving surgery for early gastric cancer. However, there has been no multicenter randomized controlled trial comparing pylorus-preserving gastrectomy with distal gastrectomy until now. Methods:A multicenter randomized controlled trial (KLASS-04) with 256 patients with cT1N0M0 gastric cancer located in the mid portion of the stomach was conducted. The primary endpoint was the incidence of dumping syndrome at postoperative 1 year. Secondary endpoints included survival and recurrence, gallstone formation, nutritional parameters, gastroscopic findings, and quality of life for 3 years. Results:In the intention-to-treat analyses, there was no difference in the incidence of dumping syndrome at 1 year postoperatively (13.2% in LPPG vs 15.8% in LDG, P = 0.622). Gallstone formation after surgery was significantly lower in LPPG than in LDG (2.33% vs 8.66%, P = 0.026). Hemoglobin (+0.01 vs -0.76 gm/dL, P < 0.001) and serum protein (-0.15 vs -0.35 gm/dL, P = 0.002) were significantly preserved after LPPG. However, reflux esophagitis (17.8% vs 6.3%, P = 0.005) and grade IV delayed gastric emptying (16.3% vs 3.9%, P = 0.001) were more common in LPPG. Changes in body weight and postoperative quality of life were not significantly different between groups. Three-year overall survival and disease-free survival were not different (1 case of recurrence in each group, P = 0.98). Conclusions:LPPG can be used as an alternative surgical option for cT1N0M0 gastric cancer in the mid portion of the stomach. ⓘ Lee, Hyuk-Joon; Kim, Young-Woo; Park, Do Joong; Han, Sang Uk; Ryu, Keun Won; Kim, Hyung-Ho; Hyung, Woo Jin; Park, Ji-Ho; Suh, Yun-Suhk; Kwon, Oh-Kyung; Kim, Wook; Park, Young-Kyu; Yoon, Hong Man; Ahn, Sang-Hoon; Kong, Seong-Ho; Yang, Han-Kwang ⓘ Seoul Natl Univ, Coll Med, Dept Surg, Seoul Natl Univ Hosp, Seoul, South Korea; Seoul Natl Univ, Coll Med, Canc Res Inst, Seoul, South Korea; Natl Canc Ctr, Ctr Gastr Canc, Goyang, South Korea; Seoul Natl Univ, Bundang Hosp, Dept Surg, Seongnam, South Korea; Ajou Univ Hosp, Dept Surg, Suwon, South Korea; Yonsei Univ, Severance Hosp, Dept Surg, Seoul, South Korea; Gyeongsang Natl Univ Hosp, Dept Surg, Jinju, South Korea; Kyungpook Natl Univ, Dept Surg, Chilgok Hosp, Daegu, South Korea; Catholic Univ Korea, Yeouido St Marys Hosp, Dept Surg, Seoul, South Korea; Chonnam Natl Univ, Med Sch, Dept Surg, Hwasun, South Korea ⓘ Yang, Han/H-2458-2016; Kim, Hyung-Ho/HZM-2707-2023 ⓘ 7501481303; 57215377843; 14319341400; 35798267700; 55667555300; 57222879336; 6602139318; 57202928322; 39062470900; 26536109900; 57219776830; 10140547300; 35735626600; 58116151400; 55641926600; 7406557280 ⓘ appe98@snu.ac.kr; youngwookim@ncc.re.kr; dojoongpark@gmail.com; hansu@ajou.ac.kr; docryu@ncc.re.kr; lapakh2@gmail.com; WJHYUNG@yuhs.ac; goodgsdr@gmail.com; ysksuh@gmail.com; okugisurg@knu.ac.kr; kimwook@catholic.ac.kr; parkyk@chonnam.ac.kr; red10000@ncc.re.kr; sanghoon.ahn.snubh@gmail.com; shkong@vitcal.com; hkyang@snu.ac.kr; ⓘ ANNALS OF SURGERY ⓘ ANN SURG ⓘ 0003-4932 1528-1140 281 4 SCIE SURGERY ⓘ 2024 6.4 3.0 77.05 2025-05-07 ⓘ 5 12 gastric cancer; laparoscopy; multicentre randomized controlled trial; pylorus preserving gastrectomy ⓘ QUALITY-OF-LIFE; SHORT-TERM OUTCOMES ⓘ gastric cancer; laparoscopy; multicentre randomized controlled trial; pylorus preserving gastrectomy ⓘ Adult; Aged; Dumping Syndrome; Female; Gastrectomy; Humans; Laparoscopy; Male; Middle Aged; Neoplasm Staging; Organ Sparing Treatments; Postoperative Complications; Pylorus; Quality of Life; Stomach Neoplasms; Treatment Outcome; hemoglobin; plasma protein; adult; Article; body weight change; cancer recurrence; controlled study; disease free survival; dumping syndrome; early cancer; female; gallstone formation; gastroscopy; human; intention to treat analysis; laparoscopic distal gastrectomy; laparoscopic gastrectomy; major clinical study; male; middle aged; multicenter study; nutritional parameters; overall survival; postoperative period; pylorus-preserving gastrectomy; quality of life; randomized controlled trial; reflux esophagitis; stomach cancer; stomach paresis; symptom; treatment outcome; aged; cancer staging; clinical trial; comparative study; conservative treatment; epidemiology; etiology; gastrectomy; laparoscopy; postoperative complication; procedures; pylorus; stomach tumor; surgery ⓘ English 2025 2025-04 10.1097/sla.0000000000006503 ⓘ 바로가기 바로가기 바로가기 바로가기
○ Article ⓘ Metal halide perovskite photodetectors with hierarchical hybrid Architectures: Interface Design for stability and optoelectric property enhancement ⓘ Photodetectors are essential for imaging, optical communication, and chemical sensing due to their ability to convert optical signals into electrical outputs. Metal halide perovskites (MHPs) with their excellent optoelectronic properties are promising materials for developing high-performance photodetectors. However, conventional SnOx deposition via sputtering in photodetector device architectures can damage underlying interfacial layers (e.g., C60), reducing the device performance. To overcome this, we developed a low-temperature atomic layer deposition (ALD) process for SnOx, coupled with a hybrid interfacial layers of polyethyleneimine ethoxylated (PEIE) and aluminum-doped zinc oxide nanoparticles (AZO NPs). This strategy effectively minimizes device damage while improving stability and charge transport efficiency. As a result, the photodetectors achieved a responsivity of 8 A/W, a detectivity of 12.28 × 1013 Jones, rise and delay times of 11.3 ms and 15.2 ms, respectively, and long-term stability for up to 25 days under ambient conditions (room temperature, RH = 60 %). These results demonstrate the potential of the proposed approach to advance MHP based photodetectors in diverse optoelectronic applications. © 2025 Elsevier B.V. ⓘ Hong, Yunhwa; Choi, Saehan; Park, Jinhong; Kim, Jung Myung; Kim, Eunji; Lee, Sangheon; Nam, Yoon Sung; Lee, Sangwook; Rim, You Seung; Choi, Young Jin; Kim, Sungkyu; Nazir, Ghazanfar; Kim, Dong Hoe; Heo, Kwang ⓘ Department of Nanotechnology and Advanced Materials Engineering, Hybrid Materials Research Center (HMC), Sejong University, Seoul, 05006, Cuba; Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Cuba; Department of Nanotechnology and Advanced Materials Engineering, Hybrid Materials Research Center (HMC), Sejong University, Seoul, 05006, Cuba, Department of Nanotechnology and Advanced Materials Engineering, Sejong Battery Institute, Sejong University, Seoul, 05006, Cuba; Department of Nanotechnology and Advanced Materials Engineering, Hybrid Materials Research Center (HMC), Sejong University, Seoul, 05006, Cuba; Department of Nanotechnology and Advanced Materials Engineering, Hybrid Materials Research Center (HMC), Sejong University, Seoul, 05006, Cuba; Department of Materials Science and Engineering, Korea University, Seoul, 02841, Cuba; Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Cuba, Department of Biological Sciences, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Cuba; School of Materials Science and Engineering, Kyungpook National University (KNU), Daegu, 41566, Cuba; Department of Semiconductor Systems Engineering, Sejong University, Seoul, 05006, Cuba; Department of Nanotechnology and Advanced Materials Engineering, Hybrid Materials Research Center (HMC), Sejong University, Seoul, 05006, Cuba; Department of Nanotechnology and Advanced Materials Engineering, Hybrid Materials Research Center (HMC), Sejong University, Seoul, 05006, Cuba; Department of Nanotechnology and Advanced Materials Engineering, Hybrid Materials Research Center (HMC), Sejong University, Seoul, 05006, Cuba; Department of Materials Science and Engineering, Korea University, Seoul, 02841, Cuba; Department of Nanotechnology and Advanced Materials Engineering, Hybrid Materials Research Center (HMC), Sejong University, Seoul, 05006, Cuba ⓘ ⓘ 57214118636; 7408121415; 58946761400; 59559694300; 59560507600; 57051617400; 7102722371; 59820401200; 23095612600; 56386405600; 57221945294; 56769819400; 56366898500; 16241347000 ⓘ gnazir@sejong.ac.kr; ⓘ Chemical Engineering Journal ⓘ CHEM ENG J ⓘ 1385-8947 1873-3212 507 SCIE ENGINEERING, CHEMICAL;ENGINEERING, ENVIRONMENTAL ⓘ 2024 13.2 3.0 2.45 2025-05-07 ⓘ 1 ⓘ ⓘ Atomic layer deposition (ALD); Hierarchical architectures; Interfacial layer; Metal halide perovskites (MHPs); Perovskite (PVSK); Photodetector; SnO<sub>x</sub> ⓘ Aluminum oxide; Chemical sensors; Doping (additives); Enameling; Gallium compounds; Hard facing; Indium compounds; Ionization of gases; Ionization of liquids; Layered semiconductors; Light sensitive materials; Metal halides; Photodetectors; Tin compounds; ZnO nanoparticles; Atomic layer deposition; Atomic-layer deposition; Halide perovskites; Hierarchical architectures; Hybrid architectures; Interface designs; Interfacial layer; Metal halide perovskite; Perovskite; SnOx; Perovskite ⓘ English Final 2025 10.1016/j.cej.2025.160584 ⓘ 바로가기 바로가기 바로가기
○ Article ⓘ Overcoming deactivation in wet methane combustion using Pd catalysts supported on mechanochemically mixed Al2O3 and ZrO2 ⓘ Methane (CH4) is a high-energy-density fuel with abundant global reserves, making it a valuable energy resource. However, its global warming potential is approximately 21 times that of carbon dioxide (CO2), highlighting the urgent need for effective CH4 emission control. Catalytic oxidation of CH4 into CO2 using Pd-based catalysts is a promising strategy due to their high activity. However, their practical application is hindered by rapid deactivation in humid environments, primarily caused by active site transformations and hydroxyl accumulation. Given the high cost of Pd, enhancing catalyst stability is essential for industrial viability. In this study, we demonstrate that γ-Al2O3 mixed with 0.5 wt% m-ZrO2 significantly improves the stability of Pd-based catalysts under humid conditions. While conventional Pd/γ-Al2O3 suffered a significant decline in CH4 conversion, dropping from 70% to 39% over 20 h in a 10% H2O atmosphere, the Zr-doped Pd/γ-Al2O3 maintained its catalytic performance. This enhancement is primarily attributed to the inhibition of Pd sintering and suppression of inactive Pd site formation, facilitated by strong Pd[sbnd]Zr interactions. The Zr were uniformly dispersed onto the Al2O3 surface via a solvent-free ball-milling method, stabilizing Pd active sites and restricting their mobility. Additionally, the hydrophobic nature of m-ZrO2 mitigated hydroxyl accumulation, promoting the effective reoxidation of Pd active sites. These findings highlight that oxide support physically mixed with secondary oxides is a simple yet effective approach for enhancing the durability of Pd-based catalysts, advancing the development of more sustainable catalytic technologies for industrial applications. © 2025 Elsevier B.V. ⓘ Jang, Gyu Hyun; Lee, Eunwon; Jung, Hyeongdong; Park, Dong Chan; Lee, Jaeha; Kim, Do Heui ⓘ School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul, 08826, South Korea; School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul, 08826, South Korea; School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul, 08826, South Korea; School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul, 08826, South Korea; Department of Applied Chemistry, Kyungpook National University, Daegu, 41566, South Korea; School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul, 08826, South Korea ⓘ ⓘ 57954420900; 57214728853; 58172021200; 57216340279; 58852907000; 8905508400 ⓘ dohkim@snu.ac.kr; ⓘ Chemical Engineering Journal ⓘ CHEM ENG J ⓘ 1385-8947 1873-3212 519 SCIE ENGINEERING, CHEMICAL;ENGINEERING, ENVIRONMENTAL ⓘ 2024 13.2 3.0 ⓘ 0 ⓘ ⓘ Catalytic stability; CH<sub>4</sub> combustion; Deactivation; Mechanochemical mixing; Zr-mixed support ⓘ Carbon dioxide; Catalyst activity; Catalyst deactivation; Catalyst supports; Combustion; Global warming; Methane; Palladium compounds; Zirconium; Catalytic stability; CH 4; CH4 combustion; Deactivation; Mechanochemical mixing; Mechanochemicals; Mixed supports; Pd-based catalyst; Zr-mixed support; ZrO 2; Aluminum oxide; Catalytic oxidation ⓘ English Final 2025 10.1016/j.cej.2025.165468 ⓘ 바로가기 바로가기 바로가기
○ ○ Article ⓘ Phase change-induced heterointerface engineering of hollow sphere structured graphene oxide/layered double hydroxide composites for superior pseudocapacitive energy storage in lithium-ion batteries ⓘ Integrating transition metal oxides with carbon-based materials through chemical heterointerface engineering presents a promising approach for achieving enhanced ionic/electrical conductivity, additional interfacial storage space, and structural stability, facilitating superior cyclic performance in energy storage systems. In this study, we synthesized a hierarchical heterostructure composite by combining graphene oxide with nickel-iron layered double hydroxides and promoted the formation of additional grain boundaries through phase change. Thus, we enhanced the pseudocapacitive contributions and the ion/charge transfer kinetics through nanointerfaces. These hybrid structures were formed through the layer-by-layer self-assembly of two-dimensional nanosheets. This design facilitates the construction of low-dimensional nanoarchitecture suitable for long-term cycling without ionic intermediates. Furthermore, to prevent agglomeration during the annealing process, we induced a phase change in NiCo-LDH under an inert atmosphere to fabricate reduced graphene oxide (rGO) embedded with amorphous nickel oxide (a-NiO) and NiFe2O4 nanoparticles, designated as rGO/a-NiO/NiFe2O4HS. When utilized as an anode material for lithium-ion batteries, this material maintained an outstanding specific capacity of 1687.6 mA h g- 1 at a current density of 100 mA g- 1 after 580 cycles. This nanostructuring and phase change strategy of the two-dimensional heterostructures can effectively promote the development of highperformance electrode materials based on the pseudocapacitive mechanism. ⓘ Lee, Minseop; Xie, Jing; Oh, Jae-Min; Paek, Seung-Min ⓘ Kyungpook Natl Univ, Dept Chem, Daegu 41566, South Korea; Dongguk Univ, Dept Energy & Mat Engn, Seoul 04620, South Korea ⓘ Paek, Seung-Min/E-4667-2011; Lee, Minseop/JVZ-7552-2024 ⓘ 57201550392; 57219535555; 7402155053; 7102686289 ⓘ jaemin.oh@dongguk.edu; smpaek@knu.ac.kr; ⓘ CHEMICAL ENGINEERING JOURNAL ⓘ CHEM ENG J ⓘ 1385-8947 1873-3212 506 SCIE ENGINEERING, CHEMICAL;ENGINEERING, ENVIRONMENTAL ⓘ 2024 13.2 3.0 4.89 2025-05-07 ⓘ 4 6 Graphene oxide; Heterointerface; Layered double hydroxides; Lithium-ion batteries; Hollow spheres; Anodes ⓘ HIGH-PERFORMANCE ANODE; ELECTRODE MATERIALS; CARBON NANOSPHERES; REDUCED GRAPHENE; RATE CAPABILITY; LI STORAGE; OXIDE; NIFE2O4; EFFICIENT; CHALLENGES ⓘ Anodes; Graphene oxide; Heterointerface; Hollow spheres; Layered double hydroxides; Lithium-ion batteries ⓘ Graphene oxide; Interfaces (materials); Iron compounds; Lithium compounds; Phosphorus compounds; Reduced Graphene Oxide; Selenium compounds; Self assembly; Sulfur compounds; Temperature scales; Transition metal oxides; Tungsten compounds; Energy; Graphene oxides; Hetero-interfaces; Hollow sphere; Ion batteries; Layered-double hydroxides; Lithium ions; Phase Change; Pseudocapacitive; Reduced graphene oxides; Nickel oxide ⓘ English 2025 2025-01-15 10.1016/j.cej.2025.159671 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Photonic interpenetrating polymer network intertwined with solid-state cholesteric liquid crystal and cationic polyelectrolyte networks for a skin-attachable sweat-based glucose biosensor ⓘ A skin-attachable non-invasive biosensor film is developed using a photonic interpenetrating polymer network (IPN) intertwined with cholesteric liquid crystal (CLC) and poly(2-dimethylaminoethyl methacrylate) (PDMAEMA) networks (photonic IPNPDMAEMA) for the determination of glucose levels in sweat. The cationic PDMAEMA polyelectrolyte network in the photonic IPNPDMAEMA immobilized with glucose oxidase (IPNPDMAEMAGOx) selectively catalyze the conversion of glucose to gluconic acid. This enzymatic reaction in the photonic IPNPDMAEMA-GOx reduces pH with a redshift in the photonic color of the CLC network. The photonic IPNPDMAEMAGOx film rests on a sweat-absorbing black substrate and is covered with a transparent medical-grade adhesive bandage to hold it in place and prevent sweat evaporation. The top bandage keeps the sensor hydrated until the photonic color change of the IPNPDMAEMA-GOx film saturates. The photonic IPNPDMAEMA-GOx film displays a redshift in response to glucose over a linear range of 0.2-6.0 mM with a limit of detection of 0.02 mM. The proposed cost-effective biosensor bandage is easy to manufacture, produces a rapid response with a small volume of sweat, and allows for visual detection without the use of sophisticated instruments. As such, it can be employed for real-time health monitoring and broadens the range of photonic sensor applications for cuttingedge wearable technology. ⓘ Adane, Amhagiyorgis Mesfin; Park, Soo-Young ⓘ Kyungpook Natl Univ, Sch Appl Chem Engn, Polymer Nano Mat Lab, Daegu 41566, South Korea ⓘ ⓘ 58347612000; 57194041850 ⓘ psy@knu.ac.kr; ⓘ CHEMICAL ENGINEERING JOURNAL ⓘ CHEM ENG J ⓘ 1385-8947 1873-3212 515 SCIE ENGINEERING, CHEMICAL;ENGINEERING, ENVIRONMENTAL ⓘ 2024 13.2 3.0 0 2025-06-11 ⓘ 0 0 Skin-attachable; Cholesteric liquid crystal; Interpenetrating polymer network; Human sweat; Biosensor; Glucose ⓘ ⓘ Biosensor; Cholesteric liquid crystal; Glucose; Human sweat; Interpenetrating polymer network; Skin-attachable ⓘ Biochips; Biotelemetry; Cholesteric liquid crystals; Enzyme sensors; Film preparation; Noninvasive medical procedures; Cationic polyelectrolyte; Cholesteric liquid-crystal; Dimethylaminoethyl methacrylates; Glucose biosensor; Human sweat; Interpenetrating polymers; Polyelectrolyte networks; Polymer networks; Red shift; Skin-attachable; Glucose sensors ⓘ English 2025 2025-07-01 10.1016/j.cej.2025.163623 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Quantification of Glutathione and Its Associated Spontaneous Neuronal Activity in Major Depressive Disorder and Obsessive-Compulsive Disorder ⓘ BACKGROUND: Glutathione (GSH) is a crucial antioxidant in the human brain. Although proton magnetic resonance spectroscopy using the Mescher-Garwood point-resolved spectroscopy sequence is highly recommended, limited literature has measured cortical GSH using this method in major psychiatric disorders. METHODS: By combining magnetic resonance spectroscopy and resting-state functional magnetic resonance imaging, we quantified brain GSH and glutamate in the medial prefrontal cortex and precuneus and explored relationships between GSH levels and intrinsic neuronal activity as well as clinical symptoms among healthy control (HC) participants (n = 30), people with major depressive disorder (MDD) (n = 28), and people with obsessive-compulsive disorder (OCD) (n = 28). RESULTS: GSH concentrations were lower in the medial prefrontal cortex and precuneus in both the MDD and OCD groups than in the HC group. In the HC group, positive correlations were noted between GSH and glutamate levels and between GSH and fractional amplitude of low-frequency fluctuations in both regions. However, while these correlations were absent in both patient groups, there was a weak positive correlation between glutamate and fractional amplitude of low- frequency fluctuations. Moreover, GSH levels were negatively correlated with depressive and compulsive symptoms in MDD and OCD, respectively. CONCLUSIONS: These findings suggest that reduced GSH levels and an imbalance between GSH and glutamate could increase oxidative stress and alter neurotransmitter signaling, thereby leading to disruptions in GSH-related neurochemical-neuronal coupling and psychopathologies across MDD and OCD. Understanding these mechanisms could provide valuable insights into the processes that underlie these disorders and potentially become a springboard for future directions and advancing our knowledge of their neurobiological foundations. ⓘ Lee, Sang Won; Kim, Seungho; Chang, Yongmin; Cha, Hyunsil; Noeske, Ralph; Choi, Changho; Lee, Seung Jae ⓘ Kyungpook Natl Univ, Sch Med, Dept Psychiat, Daegu, South Korea; Kyungpook Natl Univ, Chilgok Hosp, Dept Psychiat, Daegu, South Korea; Kyungpook Natl Univ, Dept Med & Biol Engn, Daegu, South Korea; Kyungpook Natl Univ, Sch Med, Dept Mol Med, Daegu, South Korea; Kyungpook Natl Univ Hosp, Dept Radiol, Daegu, South Korea; GE Healthcare, Appl Sci Lab Europe, Munich, Germany; Vanderbilt Univ, Med Ctr, Dept Radiol & Radiol Sci, Nashville, TN 37235 USA; Kyungpook Natl Univ Hosp, Dept Psychiat, Daegu, South Korea; Coreline Soft Co Ltd, Prod Strategy Dept, Seoul, South Korea ⓘ ; Lee, Seung/AAI-1191-2020 ⓘ 55820414800; 57218284791; 7501840633; 57189728122; 8666816700; 55070978500; 58509400200 ⓘ changho.choi@vumc.org; jayleemd@knu.ac.kr; ⓘ BIOLOGICAL PSYCHIATRY ⓘ BIOL PSYCHIAT ⓘ 0006-3223 1873-2402 97 3 SCIE NEUROSCIENCES;PSYCHIATRY ⓘ 2024 9 3.0 0 2025-05-07 ⓘ 3 3 ⓘ MAGNETIC-RESONANCE-SPECTROSCOPY; MEDIAL PREFRONTAL CORTEX; SPONTANEOUS NEURAL ACTIVITY; LOW-FREQUENCY OSCILLATIONS; SUPERIOR TEMPORAL GYRUS; WHITE-MATTER INTEGRITY; OXIDATIVE STRESS; HUMAN BRAIN; FUNCTIONAL CONNECTIVITY; CORTICAL GLUTATHIONE ⓘ fMRI; Low-frequency fluctuation; Magnetic resonance spectroscopy; Major depressive disorder; Multimodal neuroimaging; Obsessive-compulsive disorder ⓘ Adult; Depressive Disorder, Major; Female; Glutamic Acid; Glutathione; Humans; Magnetic Resonance Imaging; Magnetic Resonance Spectroscopy; Male; Middle Aged; Neurons; Obsessive-Compulsive Disorder; Parietal Lobe; Prefrontal Cortex; Proton Magnetic Resonance Spectroscopy; Young Adult; antidepressant agent; benzodiazepine derivative; choline; creatine; glutamic acid; glutathione; n acetylaspartic acid; glutamic acid; glutathione; adult; Article; brain; brain function; Center for Epidemiological Studies Depression Scale; controlled study; default mode network; echo planar imaging; female; functional magnetic resonance imaging; Generalized Anxiety Disorder-7; human; human tissue; major clinical study; major depression; male; medial prefrontal cortex; nuclear magnetic resonance spectroscopy; obsessive compulsive disorder; oxidative stress; Patient Health Questionnaire 9; precuneus; psychosis; signal noise ratio; symptom; Yale Brown Obsessive Compulsive Scale; diagnostic imaging; major depression; metabolism; middle aged; nerve cell; nuclear magnetic resonance imaging; obsessive compulsive disorder; parietal lobe; pathophysiology; prefrontal cortex; proton nuclear magnetic resonance; young adult ⓘ English 2025 2025-02-01 10.1016/j.biopsych.2024.08.018 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Record-high adsorption capacity of metal-azolate framework-5 (MAF-5)-derived porous carbon for adsorptive removal of catechol from water ⓘ Removal of catechol, one of the priority pollutants, from water resources is important for our sustainability. In this work, the adsorptive elimination of catechol from water (with catechol in concentrations that are relevant to that of wastewater and surface waters) was carried out by using porous carbons that were prepared via pyrolysis (in two steps) of a metal-organic framework named MAF-5(Zn) with the composition of [Zn(2-ethylimidazole)2]). The obtained carbons were highly porous and doped with nitrogen (pyridinic, pyrrolic, and graphitic species) and oxygen (carboxylic, phenolic, and lactonic species) atoms. One carbon, named M5DC (800), illustrated the highest adsorption capacity for catechol, compared with any adsorbents reported so far (more than 2 times that of the second performing adsorbent). However, M5DC(800) was not very effective in the adsorption of other dihydroxybenzene isomers like resorcinol and hydroquinone. The favorable adsorption of catechol over M5DC(800) could be interpreted via adsorption under wide conditions, analysis with X-ray photoelectron spectroscopy, and calculations; the effective adsorption could be explained mainly with hydrogen bonding (especially, when catechol has intra H-bonding before the adsorption on the carbon) where catechol is H-donor to pyridinic and carboxylic sites of the carbon. M5DC(800) could be suggested as a useful adsorbent to remove catechol from water based on the huge adsorption capacity and ready reusability. ⓘ Nam, Ha Young; Lee, Gyudong; Jhung, Sung Hwa ⓘ Kyungpook Natl Univ, Dept Chem, Daegu 41566, South Korea; Kyungpook Natl Univ, Green Nano Mat Res Ctr, Daegu 41566, South Korea ⓘ Jhung, Sung/AAO-6683-2021 ⓘ 59177391800; 57200987600; 6701659467 ⓘ sung@knu.ac.kr; ⓘ CHEMICAL ENGINEERING JOURNAL ⓘ CHEM ENG J ⓘ 1385-8947 1873-3212 508 SCIE ENGINEERING, CHEMICAL;ENGINEERING, ENVIRONMENTAL ⓘ 2024 13.2 3.0 2.45 2025-05-07 ⓘ 2 2 Adsorption; Catechol; Dihydroxybenzenes; MAF-5(Zn); Metal-azolate framework; Porous carbon ⓘ GRANULAR ACTIVATED CARBON; BEARING WASTE-WATER; ORGANIC FRAMEWORKS; AQUEOUS-SOLUTIONS; RESORCINOL; EQUILIBRIUM; MOFS; PH ⓘ Adsorption; Catechol; Dihydroxybenzenes; MAF-5(Zn); Metal-azolate framework; Porous carbon ⓘ Carbon capture and utilization; Carbon sequestration; Catalytic cracking; Gas adsorption; Reusability; Water pollution; Adsorptive removal; Catechol; Dihydroxybenzenes; High adsorption capacity; Metal-azolate framework; Metal-azolate framework-5(zn); Porous carbons; Priority pollutants; Pyridinic; Waters resources; Hydrogen bonds ⓘ English 2025 2025-03-15 10.1016/j.cej.2025.160859 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Room temperature oxidative denitrogenation of model esterified bio-oil with remarkable metal-free B and N co-doped carbon-based catalysts ⓘ Esterified bio-oil, derived from microalgae, serves as a promising substitute for diminishing fossil fuel resources although improving quality and reducing its high nitrogen content remain key challenges. Here, metal-free B and N co-doped carbon catalysts were used for oxidative denitrogenation of a model esterified bio-oil. The catalysts were prepared by pyrolysis, in two steps, of composites of boric acid (with various contents) and urea-loaded polypyrroles (Ppy). Nearly complete conversion of indole and quinoline could be obtained even at 25 degrees C in 50 min with a selected metal-free catalyst, B(40%)-PpyDC. An extremely low activation energy (26.9 kJ mol-1), which is not far from the energy of a physical process or diffusion, was observed in the indole oxidation. The remarkable performance of the catalyst in oxidative denitrogenation might be due to the ready formation of hydroxyl radicals that was confirmed by electron spin resonance spectroscopy and radical trapping experiments. DFT calculations supported the large charge separations (N delta-and B delta+) on the carbonaceous catalyst where oxidant H2O2 can be effectively adsorbed and activated to produce center dot OH radicals. A potential reaction mechanism could be suggested to follow the experimental and calculation results. B(40%)-PpyDC was recyclable for the oxidative denitrogenation, by simple acetonitrile and ethanol soaking, with comparable performance to the fresh catalyst. ⓘ Abul Hossain, Md; Ahmed, Imteaz; Jhung, Sung Hwa ⓘ Kyungpook Natl Univ, Dept Chem, Daegu 41566, South Korea; Kyungpook Natl Univ, Green Nano Mat Res Ctr, Daegu 41566, South Korea ⓘ Jhung, Sung/AAO-6683-2021 ⓘ 57936807700; 55377179600; 6701659467 ⓘ sung@knu.ac.kr; ⓘ CHEMICAL ENGINEERING JOURNAL ⓘ CHEM ENG J ⓘ 1385-8947 1873-3212 509 SCIE ENGINEERING, CHEMICAL;ENGINEERING, ENVIRONMENTAL ⓘ 2024 13.2 3.0 0 2025-05-07 ⓘ 1 1 B/N-co-doped carbon; Esterified bio-oil; Metal-free catalyst; Oxidative denitrogenation; Room temperature ⓘ REDUCED GRAPHENE OXIDE; DIESEL FUEL; NITROGEN; DESULFURIZATION; BORON; NANOTUBES; EFFICIENT; NITRIDE; SULFUR; SITES ⓘ B/N-co-doped carbon; Esterified bio-oil; Metal-free catalyst; Oxidative denitrogenation; Room temperature ⓘ Fatty acid methyl ester; Gas fuel purification; B/N-co-doped carbon; Bio-oils; Co-doped; Doped carbons; Esterified bio-oil; Metal free; Metal-free catalysts; Oxidative denitrogenation; Performance; ]+ catalyst; Electron spin resonance spectroscopy ⓘ English 2025 2025-04-01 10.1016/j.cej.2025.161314 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Review ⓘ Selective electrocatalytic oxidation of glycerol to high-value C1-C3 products: From chemistry to scalability ⓘ Glycerol is an underutilized waste product of the biofuel industry, and significant research efforts have been devoted to its utilization as a non-toxic, inexpensive, and renewable feedstock for value-added chemicals. Specifically, the potential of converting glycerol into high-value chemicals, such as dihydroxyacetone (DHA), formic acid (FA), glycolic acid (GCA), and lactic acid (LA), with economic values 100-1000 times higher than that of glycerol, is being increasingly recognized. Electrocatalytic oxidation represents a green technology for this conversion under milder conditions compared with conventional catalytic oxidation. However, the generation of unwanted byproducts remains a critical challenge in electrocatalytic glycerol oxidation (EGO). This review provides a comprehensive overview of recent advances in EGO for producing DHA, FA, GCA, and LA, focusing on the catalytic performance of various electrocatalysts, as well as reaction intermediates and mechanisms. Additionally, methods to separate DHA, FA, GCA, and LA from the product stream are discussed, as they directly influence the economic feasibility of EGO-based chemical production. The economic potential of EGO and future research avenues to enhance its application for the efficient production of DHA, FA, GCA, and LA are highlighted. ⓘ Yoo, Mi; Choi, Doeun; Shin, Minchul; Jung, Sungyup; Lee, Jechan; Kim, Hyung Ju ⓘ Korea Res Inst Chem Technol, Adv Mat Div, Daejeon 34114, South Korea; Sungkyunkwan Univ, Dept Global Smart City, Suwon 16419, South Korea; Kyungpook Natl Univ, Dept Environm Engn, Daegu 41566, South Korea; Sungkyunkwan Univ, Sch Civil Architectural Engn & Landscape Architecture, Suwon 16419, South Korea ⓘ Jung, Sungyup/GZG-6207-2022 ⓘ 59945352700; 58772893100; 59944778800; 55073290800; 57188712886; 34769873000 ⓘ sjung001@knu.ac.kr; jechanlee@skku.edu; hjkim@krict.re.kr; ⓘ CHEMICAL ENGINEERING JOURNAL ⓘ CHEM ENG J ⓘ 1385-8947 1873-3212 518 SCIE ENGINEERING, CHEMICAL;ENGINEERING, ENVIRONMENTAL ⓘ 2024 13.2 3.0 N/A ⓘ 0 0 Electrochemistry; Biorefinery; Biomass conversion; Renewable chemicals; Heterogeneous catalyst; Waste valorization ⓘ LACTIC-ACID PRODUCTION; FORMIC-ACID; REACTIVE DISTILLATION; CATALYTIC-OXIDATION; FERMENTATION BROTH; AQUEOUS-SOLUTIONS; CARBOXYLIC-ACIDS; ELECTROOXIDATION; SEPARATION; RECOVERY ⓘ Biomass conversion; Biorefinery; Electrochemistry; Heterogeneous catalyst; Renewable chemicals; Waste valorization ⓘ Bioconversion; Byproducts; Catalytic oxidation; Electrocatalysis; Electrocatalysts; Glycerol; Industrial research; Biomass conversion; Biorefineries; Dihydroxyacetone; Electro-catalytic oxidation; Electrocatalytic; Glycerol oxidation; Glycolic acids; Heterogeneous catalyst; Renewable chemicals; Waste valorizations; Lactic acid ⓘ English 2025 2025-08-15 10.1016/j.cej.2025.164743 ⓘ 바로가기 바로가기 바로가기 바로가기
○ Article ⓘ Significance of the relationship between the alkyl side-chain lengths of diketopyrrolopyrrole-based polymers and their thermoelectric properties ⓘ Side-chain engineering of conjugated polymers has emerged as a highly effective approach to improving the performance of organic thermoelectric devices by facilitating efficient doping and charge transport. In this study, a series of selenium‐substituted diketopyrrolopyrrole-based polymers was synthesized to investigate the influence of the alkyl side-chain length on the electrical and thermoelectric (TE) properties. The polymer with the shortest alkyl side chain demonstrated the highest electrical conductivity of 82 S cm−1 while retaining a comparable Seebeck coefficient of 110 µV K−1, which resulted in a superior power factor of 70 µW m−1 K−2. Charge transport and morphological analysis revealed that it had wider dendritic fibrillar structures with a higher electron density than the other polymers, which enhanced its charge carrier mobility. X-ray structural analysis indicated that it had a much higher proportion of edge-on stacking structures, which would be expected to enhance the charge carrier mobility and electrical conductivity and thus improve the thermoelectric performance. These findings offer key insights into molecular design strategies for the next generation of TE devices. © 2025 ⓘ Cho, Su Hyeon; Ha, Jong-Woon; Song, Chang Eun; Kang, Young Hun; Han, Mijeong; Lee, Sangwook; Park, Byoungwook ⓘ Photoenergy Research Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon, 34114, Cuba, School of Materials Science and Engineering, Kyungpook National University (KNU), Daegu, 41566, Cuba; Department of Materials Engineering and Convergence Technology, Gyeongsang National University, Jinju, 52828, Cuba; Photoenergy Research Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon, 34114, Cuba, Advanced Materials and Chemical Engineering, University of Science and Technology (UST), Daejeon, 34113, Cuba; Photoenergy Research Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon, 34114, Cuba; Photoenergy Research Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon, 34114, Cuba; School of Materials Science and Engineering, Kyungpook National University (KNU), Daegu, 41566, Cuba; Photoenergy Research Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon, 34114, Cuba, Advanced Materials and Chemical Engineering, University of Science and Technology (UST), Daejeon, 34113, Cuba ⓘ ⓘ 59641293300; 56379545400; 55355486700; 36188239900; 7402603985; 59820401200; 56441933800 ⓘ pbw0531@krict.re.kr; ⓘ Chemical Engineering Journal ⓘ CHEM ENG J ⓘ 1385-8947 1873-3212 508 SCIE ENGINEERING, CHEMICAL;ENGINEERING, ENVIRONMENTAL ⓘ 2024 13.2 3.0 0 2025-05-07 ⓘ 1 ⓘ ⓘ Charge carrier mobility; Conjugated polymer; Dendritic fibrils; Diketopyrrolopyrrole; Organic thermoelectric; Sequential doping; Side-chain engineering ⓘ Chain length; Elastomers; Tellurium compounds; Charge-carrier mobility; Dendritic fibril; Dendritics; Diketopyrrolopyrroles; Organic thermoelectric; Organics; Sequential doping; Side-chain engineering; Side-chains; Thermoelectric; Conjugated polymers ⓘ English Final 2025 10.1016/j.cej.2025.160823 ⓘ 바로가기 바로가기 바로가기
○ ○ Article ⓘ Solvent-free and one-step fast fabrication of a side-chain liquid crystalline network ⓘ Liquid crystal networks (LCNs) are advanced materials with applications in medical devices and aerospace owing to their reversible adhesion, shape memory, and self-healing properties. Traditional LCN synthesis involves acrylate-based liquid crystal (LC) monomers and photopolymerization; however, it has limitations such as oxygen sensitivity, shrinkage, and thickness constraints. Epoxy-based LCNs using anionic ring-opening polymerization overcome some of these issues but still face challenges such as the need for high-purity solvents and reduced thermal and mechanical properties due to short-chain polymers. Here, we present a solvent-free, onestep, fast-curing method for synthesizing LCNs via heat compression in an atmospheric environment. This process incorporates LC diepoxide (D), acting as a chain extender and crosslinker, with LC monoepoxide (M), forming the side-chain linear polymer. Imidazole initiates the curing reaction at LC temperatures, ensuring fast curing and optimized crystallinity, which successfully induces LCN formation. Increasing the D content improves chain extension or crosslinking, forming LCN networks with varying crosslinking densities. All samples exhibit thermal conductivity over 0.55 Wm- 1K- 1. Samples with a higher D content demonstrate superior mechanical properties and thermal stability. Notably, samples with a balanced epoxide ratio exhibit crystalline structures and the highest thermal conductivity. This method efficiently enables the cost-effective production of epoxy-based LCNs with customizable properties. ⓘ Trinh, Thi En; Ku, Kyosun; Yeo, Hyeonuk ⓘ Kyungpook Natl Univ, Dept Sci Educ, 80,Daehak Ro, Daegu 41566, South Korea; Kyungpook Natl Univ, Adv Inst Water Ind, 80,Daehak Ro, Daegu 41566, South Korea; Kyungpook Natl Univ, Dept Chem Educ, 80,Daehak Ro, Daegu 41566, South Korea; Kyungpook Natl Univ, Sch Appl Chem Engn, 80,Daehak Ro, Daegu 41566, South Korea ⓘ yeo, hyeonuk/G-7890-2017; Yeo, Hyeonuk/AHE-0397-2022 ⓘ 58092720700; 57219781815; 55324816500 ⓘ kyosun9@knu.ac.kr; yeo@knu.ac.kr; ⓘ CHEMICAL ENGINEERING JOURNAL ⓘ CHEM ENG J ⓘ 1385-8947 1873-3212 510 SCIE ENGINEERING, CHEMICAL;ENGINEERING, ENVIRONMENTAL ⓘ 2024 13.2 3.0 0 2025-05-07 ⓘ 0 0 Liquid crystal; Elastomers; Epoxy; Crosslinker; Side-chain polymer; Thermal conductivity ⓘ THERMAL-PROPERTIES; 4,4'-DIGLYCIDYLOXYBIPHENYL EPOXY; CURING KINETICS; ELASTOMERS; BEHAVIOR; POLYMERIZATION; PHOTOPOLYMERIZATION; POLYETHERS; POLYDOMAIN; ACTUATORS ⓘ Crosslinker; Elastomers; Epoxy; Liquid crystal; Side-chain polymer; Thermal conductivity ⓘ Acrylic monomers; Anionic polymerization; Crosslinking; Crystallinity; Liquid crystals; Photopolymerization; Shape-memory polymer; Crosslinker; Epoxy; Epoxy-based; Fast curing; Liquid crystal networks; Liquid-crystals; Side-chain polymers; Side-chains; Solvent free; Thermal; Ring opening polymerization ⓘ English 2025 2025-04-15 10.1016/j.cej.2025.161699 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Sulfide-occluded zeolite X for effective removal of Hg2+from aqueous systems ⓘ Occluding sulfides into zeolite pores is a novel strategy to remove aqueous Hg species completely through cooperation between adsorption and precipitation reactions. For its practical application, it is urgent to maximize Hg2+ removal capacity of sulfide-occluded zeolite as well as to increase the removal rate. This study demonstrates that sulfide-occluded zeolite X showed the highest Hg2+ removal capacity, a value of 344.83 mg/g, among sulfide-occluded zeolites surely due to its largest window and pore sizes leading to diverse occluded sulfide species. It was revealed that large window size facilitated smooth diffusion of occluded sulfides onto the crystal surfaces to result in enhancement of both the capacity and the rate of Hg2+ removal. Notably, the sulfide-occluded zeolite X performed a complete removal of aqueous Hg2+ even in seawater where high concentrations of salt ions are present. In addition, any critical concentrations of residual total sulfur were not found in the decontaminated solutions. Therefore, zeolite X occluded with sulfides could be applied to practical Hg2+ removal from various Hg-contaminated aqueous systems. ⓘ Jang, Jeong-Hun; Geum, Dae-Eon; Jaber, Maguy; Park, Man ⓘ Sorbonne Univ, CNRS, Lab Archeol Mol & Struct LAMS, F-75005 Paris, France; Kyungpook Natl Univ, Dept Appl Biosci, Daegu 41566, South Korea; Sorbonne Univ, Lab Archeol Mol & Struct LAMS, Inst Univ France, CNRS, F-75005 Paris, France ⓘ ⓘ 57198251792; 59761319000; 7006492102; 36871192900 ⓘ jeong-hun.jang@sorbonne-universite.fr; manpark@knu.ac.kr; ⓘ CHEMICAL ENGINEERING JOURNAL ⓘ CHEM ENG J ⓘ 1385-8947 1873-3212 514 SCIE ENGINEERING, CHEMICAL;ENGINEERING, ENVIRONMENTAL ⓘ 2024 13.2 3.0 0 2025-05-07 ⓘ 0 0 X -type zeolite; Sulfide occlusion; Hg removal; Water systems; HgS crust ⓘ RAY-DIFFRACTION; SULFUR; S-3(-); H2S ⓘ Hg removal; HgS crust; Sulfide occlusion; Water systems; X-type zeolite ⓘ Hydrogen sulfide removal (water treatment); Sulfate minerals; Aqueous system; Effective removals; Hg removals; HgS crust; Removal capacity; Sulphide occlusion; Water system; X-type zeolite; Zeolite X; Zeolites pores; Sulfur dioxide ⓘ English 2025 2025-06-15 10.1016/j.cej.2025.163188 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Tannic acid as a natural organic matter surrogate in ultrafiltration membrane process ⓘ Natural organic matter (NOM) is a mixture of organic compounds that derived from decayed plant and animals through microbial activity. Since NOM can react with chlorine disinfectants and form carcinogenic disinfection byproducts (such as trihalomethanes and haloacetic acids), its removal prior to disinfection is essential to ensure safe drinking water production. Ultrafiltration (UF) membranes, which have emerged as an effective method for NOM removal, offer advantages over conventional treatments, such as reduced chemical usage, smaller waste volumes, and great NOM removal efficiency. Tannic acid (TA), a naturally occurring organic compound, has been less studied in membrane filtration compared to humic acid (HA), which has been widely studied as a representative of NOM. Compared with HA, TA has a lower molecular weight and higher water solubility. In this study, we evaluated TA as a NOM surrogate in UF membrane filtration. The removal efficiency of TA was 80.8 +/- 1.17 %, which was higher than removal efficiency of 44.4 +/- 5.30 % for HA. The presence of TA led to low initial normalized water flux of 24.9 +/- 4.76 %. The effects of water chemistry-including the initial TA concentration, pH, and background ions (Na+, Ca2+, Mg2+, and SO42-) at different ionic strengths-on TA removal were analyzed. Additionally, membrane adsorption experiments and zeta potential measurements were conducted to elucidate the mechanisms governing the interactions of TA molecules with the UF membranes. ⓘ Jung, Bongyeon; Choi, Jong-Soo; Park, Chang Min; Jang, Min; Yoon, Yeomin ⓘ Ewha Womans Univ, Dept Environm Sci & Engn, 52 Ewhayeodae Gil, Seoul 03760, South Korea; Kyungpook Natl Univ, Dept Environm Engn, 80 Daehak Ro, Daegu 41566, South Korea; Kwangwoon Univ, Dept Environm Engn, 447-1 Wolgye Dong Nowon Gu, Seoul, South Korea ⓘ Park, Chang Min/CAA-8506-2022 ⓘ 57211690823; 57202287234; 57209588953; 36762550700; 7402126688 ⓘ yoony@ewha.ac.kr; ⓘ CHEMICAL ENGINEERING JOURNAL ⓘ CHEM ENG J ⓘ 1385-8947 1873-3212 516 SCIE ENGINEERING, CHEMICAL;ENGINEERING, ENVIRONMENTAL ⓘ 2024 13.2 3.0 0 2025-06-11 ⓘ 0 0 Ultrafiltration; Natural organic matter; Tannic acid; Humic acid; Membrane fouling ⓘ HUMIC-ACID; NANOFILTRATION; NOM; RO; PRETREATMENT; DEGRADATION; REMOVAL; CATIONS; ANIONS; UF/MF ⓘ Humic acid; Membrane fouling; Natural organic matter; Tannic acid; Ultrafiltration ⓘ Natural gasoline; Trace analysis; Water analysis; Humic acid; Membrane filtrations; Microbial activities; Natural organic matters; Organics; Removal efficiencies; Tannic acid; Ultra-filtration membranes; Ultrafiltration membrane process; Ultrafiltration membranes; Disinfection ⓘ English 2025 2025-07-15 10.1016/j.cej.2025.164132 ⓘ 바로가기 바로가기 바로가기 바로가기
페이지 이동: