2024 연구성과 (19 / 286)

※ 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 ⓘ InGaN/GaN multi-quantum well nanowires: Enhanced trace-level NO2 detection for environmental and breath analysis ⓘ The World Health Organization highlights nitrogen dioxide (NO2) as a key atmospheric pollutant impacting air quality and human health. To date, several sensors have been proposed for NO2 detection and disease monitoring, but their effectiveness is limited because of low sensitivity and high operational temperatures. Herein, we propose a selective and sensitive NO2 sensor based on indium gallium nitride/gallium nitride multiple quantum wells (InGaN/GaN-MQWs). We explored different InGaN/GaN-MQWs configurations (InGaN/GaN-MQW1, InGaN/GaN-MQW2, InGaN/GaN-MQW3), developed through metal–organic chemical vapor deposition (MOCVD), to analyze their impact on gas sensing performance. Our findings reveal that the InGaN/GaN-MQW2 sensor at 150 °C exhibits a response 4.0, 3.1, and 1.65 times greater than GaN-NWs, InGaN/GaN-MQW1, and InGaN/GaN-MQW3 sensors, respectively. The limit of detection (LOD) for the InGaN/GaN-MQW2 sensor is 3 parts per billion (ppb), significantly lower than the NO2 threshold value of 53 ppb. Under ultraviolet (UV) light, the response of InGaN/GaN-MQW2 is 5.51-fold, 4.18-fold, and 1.82-fold higher than that of the GaN-NWs, InGaN/GaN-MQW1, and InGaN/GaN-MQW2 sensors, respectively. Importantly, our hybrid nanocomposite-based electronic nose (e-nose) sensor arrays could distinguish between healthy and simulated unhealthy breaths with high accuracy, promising a new era of efficient, non-invasive disease detection through breath analysis. © 2024 ⓘ Shanmugasundaram, Arunkumar; Johar, Muhammad Ali; Paeng, Changung; Jeong, Yun-Jin; Abdullah, Ameer; Park, Jongsung; Ryu, Sang-Wan; Yim, Changyong; Lee, Dong-Weon ⓘ MEMS and Nanotechnology Laboratory, School of Mechanical Engineering, Chonnam National University, Gwangju, 61186, South Korea, Advanced Medical Device Research Center for Cardiovascular Disease, Chonnam National University (CNU), Gwangju, 61186, South Korea; Department of Physics, Chonnam National University, Gwangju, 61186, South Korea; Department of Energy Materials & Chemical Engineering, Kyungpook National University (KNU), 2559 Gyeongsang-daero, Gyeongsangbuk-do, Sangju-si, 37224, South Korea; Department of Automatic System, Chosun College of Science & Technology, Gwangju, 61453, South Korea; Department of Physics, Chonnam National University, Gwangju, 61186, South Korea; Department of Precision Mechanical Engineering, Kyungpook National University (KNU), 2559 Gyeongsang-daero, Gyeongsangbuk-do, Sangju-si, 37224, South Korea; Department of Physics, Chonnam National University, Gwangju, 61186, South Korea; Department of Energy Materials & Chemical Engineering, Kyungpook National University (KNU), 2559 Gyeongsang-daero, Gyeongsangbuk-do, Sangju-si, 37224, South Korea, Department of Energy Chemical Engineering, Kyungpook National University (KNU), 2559 Gyeongsang-daero, Gyeongbuk, Sangju, 37224, South Korea, Department of Advanced Science and Technology Convergence, Kyungpook National University (KNU), 2559 Gyeongsang-daero, Gyeongsangbuk, Sangju, 37224, South Korea; MEMS and Nanotechnology Laboratory, School of Mechanical Engineering, Chonnam National University, Gwangju, 61186, South Korea, Advanced Medical Device Research Center for Cardiovascular Disease, Chonnam National University (CNU), Gwangju, 61186, South Korea, Center for Next-Generation Sensor Research and Development, Chonnam National University (CNU), Gwangju, 61186, South Korea ⓘ ⓘ 55750828400; 57195470144; 58161154100; 56261982700; 57218366966; 57189583605; 7402110991; 36877182000; 34875377700 ⓘ cy.yim@knu.ac.kr; ⓘ Chemical Engineering Journal ⓘ CHEM ENG J ⓘ 1385-8947 1873-3212 491 SCIE ENGINEERING, CHEMICAL;ENGINEERING, ENVIRONMENTAL ⓘ 2024 13.2 3.0 1.38 2025-05-07 ⓘ 7 ⓘ ⓘ Breath sensors; Disease diagnosis; High selectivity and sensitivity; InGaN/GaN MQW; Light activated sensors; NO<sub>2</sub> sensors ⓘ Air quality; Diagnosis; Electronic nose; III-V semiconductors; Indium compounds; Metallorganic chemical vapor deposition; Nitrogen oxides; Organic chemicals; Semiconductor quantum wells; Tin oxides; Breath analysis; Breath sensors; Disease diagnosis; High selectivity; High sensitivity; Indium gallium nitride; InGaN/GaN MQWs; Light activated sensor; NO 2 sensor; Selectivity and sensitivity; Gallium nitride ⓘ English Final 2024 10.1016/j.cej.2024.152074 ⓘ 바로가기 바로가기 바로가기
○ ○ Article ⓘ Lipid analyses of oil-bearing biomass using a thermally induced derivatization method ⓘ This study assessed the efficacy of a commercial fatty acid (FA) methylation kit for analyzing insect/microalgal biomass lipids by comparing it to a thermally induced derivatization method, which is known for its high conversion yield and impurity resistance and serves as a benchmark for evaluating kit performance, as a comparative standard. In insect lipid analysis, kit-based derivatization demonstrated a lower yield of FA methyl esters (FAMEs) than that of the thermally induced method, which is attributable to inherent technical limitations (vulnerability to impurities). This yield discrepancy was further highlighted in microalgal lipid analyses. The efficiency of FA derivatization using the kit-based method was contingent on the lipid structure, as evidenced by the diminished conversion yields for wax esters in Euglena gracilis. Furthermore, for Chlamydomonas reinhardtii, the lower FAME yield observed with kit-based derivatization suggested potential inadequacies in lipid extraction, particularly in the presence of rigid cellular structures such as cell walls. This reduced interaction between lipids and methanol could lead to diminished FAME conversion yields. These findings highlight the notable influence of the biomass type and lipid structure on the efficiency of kit-based derivatization, potentially yielding suboptimal results in lipid analysis. ⓘ Kim, Jee Young; Kim, Minyoung; Lee, Jihye; Jung, Sungyup; Tsang, Yiu Fai; Choi, Yoon-E; Kwon, Eilhann E. ⓘ Hanyang Univ, Dept Earth Resources & Environm Engn, Seoul 04763, South Korea; Korea Univ, Div Environm Sci & Ecol Engn, Seoul 02841, South Korea; Kyungpook Natl Univ, Dept Environm Engn, Daegu 41566, South Korea; Educ Univ Hong Kong, Dept Sci & Environm Studies, Tai Po, Hong Kong 999077, Peoples R China; Educ Univ Hong Kong, State Key Lab Marine Pollut, Tai Po, Hong Kong 999077, Peoples R China ⓘ Kim, Jee Young/LKL-4818-2024; Jung, Sungyup/GZG-6207-2022; Tsang, Yiu/AAJ-2524-2020; Kwon, Eilhann/AGY-3339-2022 ⓘ 57191420766; 57193932233; 55874501900; 55073290800; 22954605700; 14031035300; 9240622100 ⓘ yechoi@korea.ac.kr;ek2148@hanyang.ac.kr; ⓘ CHEMICAL ENGINEERING JOURNAL ⓘ CHEM ENG J ⓘ 1385-8947 1873-3212 494 SCIE ENGINEERING, CHEMICAL;ENGINEERING, ENVIRONMENTAL ⓘ 2024 13.2 3.0 1.1 2025-05-07 ⓘ 5 5 Fatty acid methyl esters (FAMEs); Lipid analysis; Transesterification; Triglycerides; Wax esters ⓘ BIODIESEL PRODUCTION; GAS-CHROMATOGRAPHY; MEDIUM-CHAIN; TRANSESTERIFICATION; ESTERS ⓘ Fatty acid methyl esters (FAMEs); Lipid analysis; Transesterification; Triglycerides; Wax esters ⓘ Alkylation; Benchmarking; Biomass; Efficiency; Esters; Lipids; Oil bearing formations; Paraffins; Conversion yield; Derivatization method; Derivatizations; Fatty acid methyl ester; Fatty acids methyl esters; Lipid analysis; Thermally induced; Transesterifications; Triglyceride; Wax esters; Fatty acids ⓘ English 2024 2024-08-15 10.1016/j.cej.2024.152892 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Long-term stable catalyst for dry reforming of Methane: Ni-Nanocluster embedded in silica ⓘ Dry reforming of methane (DRM) is a fascinating catalysis to convert greenhouse gases into valuable syngas; however, the catalyst deactivation due to coking and sintering has posed a significant obstacle to practical use. Here, we introduce a novel synthetic approach for creating Ni nanoclusters (similar to 2 nm) embedded inside silica (NiES), without using any catalytic metal promoters. Compared to conventional Ni-SiO2 catalysts, the NiES catalyst could fully utilize unique Ni-O-Si bonding within a bimodal silica matrix. This leads to exceptional reactivity and long-term stability for DRM without noticeable deactivation over 500 h of operations. Notably, characterizations revealed that Ni nanoclusters maintained their particle size even after this extended operation, significantly contributing to their resistance against carbon coking. These Ni clusters appeared to efficiently promote CH4 decomposition, while the continuously regenerated OH groups from dissociative adsorption of CO2 assisted in oxidizing carbon species. This study will substantially contribute to the swift implementation of the catalytic DRM process. ⓘ Min, Haehyun; Ju, Yangguen; Ji, Ye Jin; Kim, Do Yeong; Kim, Young Jin; Kang, Sung Bong ⓘ Gwangju Inst Sci & Technol, Sch Environm & Energy Engn, Gwangju 61005, South Korea; Kyungpook Natl Univ, Dept Environm Engn, 80 Daehak Ro, Daegu 41566, South Korea; Korea Res Inst Chem Technol, CO 2 & Energy Res Ctr, Daejeon 34114, South Korea; Gwangju Inst Sci & Technol, Res Ctr Innovat Energy & Carbon Optimized Synth Ch, Gwangju 61005, South Korea ⓘ ⓘ 57367334300; 57716869100; 58995875600; 57481464200; 59054565400; 59969495200 ⓘ yjkim03@knu.ac.kr;sbkang@gist.ac.kr; ⓘ CHEMICAL ENGINEERING JOURNAL ⓘ CHEM ENG J ⓘ 1385-8947 1873-3212 489 SCIE ENGINEERING, CHEMICAL;ENGINEERING, ENVIRONMENTAL ⓘ 2024 13.2 3.0 2.2 2025-05-07 ⓘ 8 10 Dry reforming of methane; Ni nanoclusters; Long-term stability; CO2 utilization; H-2 production ⓘ NI/SIO2 CATALYST; NICKEL; CE ⓘ CO<sub>2</sub> utilization; Dry reforming of methane; H<sub>2</sub> production; Long-term stability; Ni nanoclusters ⓘ Carbon; Catalyst deactivation; Greenhouse gases; Hydrogen production; Methane; Nanoclusters; Nickel; Particle size; Silica; Silicon; Sintering; Catalysts deactivation; CO2 utilization; Dry reforming-of-methane; Greenhouses gas; H 2 production; Long term stability; Ni nanocluster; Practical use; Stable catalysts; Syn gas; Carbon dioxide ⓘ English 2024 2024-06-01 10.1016/j.cej.2024.151520 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Mechanochemical engineering and supramolecular reconstruction of MoS2 nanosheets with C60-γCD complexes for enhanced photocatalytic and piezoelectric performances ⓘ Conventional exfoliation methods for bulk MoS2, such as liquid phase exfoliation and ball milling, involve complex, energy-intensive steps, making it challenging to develop efficient catalytic systems due to the cumbersome processes and low yields. In this study, we present a novel, solvent-free, one-step mechanochemical process for a three-component heterostructure of MoS2, cyclodextrin (gamma CD), and fullerene (C-60) for catalytic hydrogen production. Upon grinding with an agate and mortar, the in-situ formation of a supramolecular complex of gamma CD and C-60 synergistically induces lever-based fragmentation of MoS2, significantly increasing the exposure of active edge sites and enhancing interactions within the MoS2-C-60-gamma CD heterostructure. This simple method greatly improves water dispersibility and maximizes the catalytic activity of the MoS2, reinforcing its photocatalytic and piezoelectric performance in hydrogen production through supramolecular interactions with the assembled C-60-gamma CD nanocomplex. The interfacial and electrochemical synergistic effects based on supra- molecular design lead to a simple and effective fabrication process with robust photocatalytic performance, demonstrating the practicality of mechanochemical techniques for high-performance MoS2 heterostructure catalysis systems. ⓘ Bu, Seok Hyeong; Cho, Wansu; Lee, Chaewon; Ham, Gayoung; Yang, Beomjoo; Jung, Jongwon; Cha, Hyojung; Park, Chiyoung ⓘ Daegu Gyeongbuk Inst Sci & Technol, Dept Energy Sci & Engn, 333 Techno Jungang Daero, Hyeonpung Eup 42988, Daegu, South Korea; Kyungpook Natl Univ, Dept Hydrogen & Renewable Energy, Daegu 41566, South Korea; Chungbuk Natl Univ, Sch Civil Engn, Chungdae Ro 1, Cheongju 28644, Chungbuk, South Korea ⓘ ⓘ 59361229200; 57210434002; 59360889500; 58506766600; 57221775575; 36613366400; 35885242200; 7408416041 ⓘ hcha@knu.ac.kr;parkcy@dgist.ac.kr; ⓘ CHEMICAL ENGINEERING JOURNAL ⓘ CHEM ENG J ⓘ 1385-8947 1873-3212 502 SCIE ENGINEERING, CHEMICAL;ENGINEERING, ENVIRONMENTAL ⓘ 2024 13.2 3.0 0 2025-05-07 ⓘ 0 0 Supramolecular interactions; MoS2 heterostructure; Catalytic activity; Mechanochemical fragmentation ⓘ H-2 EVOLUTION; EXFOLIATION; EFFICIENT; COCATALYST; GREEN ⓘ Catalytic activity; Mechanochemical fragmentation; MoS<sub>2</sub> heterostructure; Supramolecular interactions ⓘ Exfoliation (materials science); Layered semiconductors; Milling (machining); Nanosheets; C 60; Liquid phasis; Mechanochemical fragmentation; Mechanochemicals; MoS 2; MoS2 heterostructure; Performance; Photo-catalytic; Piezoelectric; Supramolecular interactions; Photocatalytic activity ⓘ English 2024 2024-12-15 10.1016/j.cej.2024.157688 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Modulating Schottky barriers and active sites of Ag-Ni bi-metallic cluster on mesoporous carbon nitride for enhanced photocatalytic hydrogen evolution ⓘ The advancement of photocatalysis relies on the development of novel hetero-structured materials with unique architectures. In this study, we successfully synthesized a hetero-structured g-C3N4 (GCN) material with a distinctive surface-interface modification. To further enhance its photocatalytic performance, we optimized the Ag and Ni concentration to maximize the visible light absorption and catalytic active sites for hydrogen evolution reactions. By using systematic physicochemical characterizations and density functional theory (DFT) calculations, we elucidated the pivotal role of graphitic carbon nitride (g-C3N4) in facilitating the formation of an efficient charge transfer channel and promoting the effective generation and separation of photo-generated carriers. From the DFT calculations, we also demonstrated that the Ag and Ni nanoparticles provide more efficient visible light absorption and active sites than Ni nanoparticles for water splitting and hydrogen evolution and In-situ TEM exploration. Furthermore, the hetero microstructure consisting of thin g-C3N4 nano scrolls has a crucial role in shortening the migration distance of the carriers, effectively suppressing carrier recombination. Consequently, these extraordinary characteristics resulted in a superior solar light-driven photocatalytic H-2 evolution rate of 2507 mu mol.h(-1).g(-1), surpassing the rate achieved by g-C3N4 heterostructures by a remarkable 18.6-folds. Moreover, the apparent quantum efficiency of this hetero-structured material reached an exceptional value of 1.6 % under a 1.5 G air mass filter. ⓘ Rao, V. Navakoteswara; Kwon, Hyunguk; Nagaveni, M.; Ravi, P.; Lee, Yonghee; Lee, Seong Jae; Kim, Kyeounghak; Kumari, M. Mamatha; Shankar, M., V; Yoo, Jung Ho; Ahn, Chiwon; Kim, Sang-jae; Yang, Jun Mo ⓘ Natl Nanofab Ctr, 291 Daehak Ro, Daejeon 34141, South Korea; Kyungpook Natl Univ, Dept Nano & Adv Mat Sci & Engn, 2559 Gyeongsang Daero, Sangju Si 37224, Gyeongsangbuk D, South Korea; Seoul Natl Univ Sci & Technol, Dept Future Energy Convergence, Seoul 01811, South Korea; Yogi Vemana Univ, Dept Mat Sci & Nanotechnol, Nanocatalysis & Solar Fuels Res Lab, Kadapa 516005, Andhra Pradesh, India; Gachon Univ, Bionano Res Inst, 1342 Seongnamdaero, Seongnam Si 13120, South Korea; Hanyang Univ, Dept Chem Engn, 222 Wangsimni Ro, Seoul 04763, South Korea; Jeju Natl Univ, Fac Appl Energy Syst, Nanomat & Syst Lab, Major Mechatron Engn, Jeju 63243, South Korea; Jeju Natl Univ, Coll Engn, Nanomat & Syst Lab, Major Mech Syst Engn, Jeju 63243, South Korea; Jeju Natl Univ, Green Hydrogen Glocal Leading Res Ctr gH2 RC, Jeju 63243, South Korea; Jeju Natl Univ, Res Inst New Energy Ind RINEI, Jeju 63243, South Korea ⓘ ; Lee, Seong/AAI-3638-2020; Rao, Vempuluru/ABG-8665-2021; Lee, Jae/G-7717-2012; Kim, Sang-Jae/S-4053-2019; Kumari, Mamatha/ABE-9578-2021 ⓘ 57196196615; 56492062200; 58980248700; 57196186668; 57348660100; 59351050000; 56589209600; 55861942200; 7005167181; 59350903900; 7201986640; 22944436400; 56912650200 ⓘ navakotinano@gmail.com;parnapalliravi@gmail.com;chemekim@hanyang.ac.kr;kimsangj@jejunu.ac.kr;jmyang@nnfc.re.kr; ⓘ CHEMICAL ENGINEERING JOURNAL ⓘ CHEM ENG J ⓘ 1385-8947 1873-3212 499 SCIE ENGINEERING, CHEMICAL;ENGINEERING, ENVIRONMENTAL ⓘ 2024 13.2 3.0 2.2 2025-05-07 ⓘ 10 9 Hetero-structured; Surface-active site; Solar; Photocatalyst; Quantum efficiency ⓘ QUANTUM DOTS; NANOSHEETS; G-C3N4; SILVER; NANOPARTICLES; NANOTUBES; GRAPHENE; CATALYST; TRENDS; ALLOY ⓘ Hetero-structured; Photocatalyst; Quantum efficiency; Solar; Surface-active site ⓘ Carrier concentration; Graphitic Carbon Nitride; Mesopores; Mesoporous materials; Metal nanoparticles; Nanocrystals; Photocatalytic activity; Schottky barrier diodes; Active site; Density-functional theory calculations; Hetero-structured; Metallic clusters; Ni Nanoparticles; Schottky barriers; Solar; Structured materials; Surface active sites; Visible light absorption ⓘ English 2024 2024-11-01 10.1016/j.cej.2024.156179 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Optimized Li⁺ ion diffusion pathways in unidirectional stacked lithium iron phosphate cathodes: Enhanced electrochemical performance and long-term stability ⓘ In this study, we introduce an innovative approach to enhance the electrochemical performance and longevity of lithium iron phosphate (LiFePO4, LFP) cathode materials through a novel saccharide-assisted unidirectional stacking method. The inherent challenges of LFP, such as low lithium-ion diffusion and limited electrical conductivity, are addressed by leveraging saccharides as binders to achieve precise alignment of LFP particles. This method facilitates the formation of unobstructed lithium-ion pathways, significantly enhancing Li+ ion diffusion rates and cycle stability. The unmodified LFP cathode exhibited a lithium-ion diffusion coefficient (DLi+) of 7.79 x 10-12 cm2 s-1, while the S5 (sucrose 5 %) LFP cathode demonstrated a superior diffusion coefficient of 3.5 x 10-10 cm2 s-1. Additionally, the S5-LFP achieved a remarkable discharge capacity of 165.1 mAh g-1 at a 0.1C rate, compared to 147.8 mAh g-1 for the unmodified LFP. The cycle stability was also significantly improved, with the S5-LFP retaining 86.3 % of its capacity after 2,000 cycles at a 5C rate, whereas the unmodified LFP retained only 79.2 % under the same conditions. These improvements are attributed to the optimized particle alignment achieved through saccharide-assisted stacking, which enhances Li+ ion diffusion and overall electrochemical performance. Additionally, the structural integrity and electrochemical stability of the S5-LFP cathodes were thoroughly validated through a comprehensive set of characterization methods and electrochemical tests, highlighting the scalability and cost-effectiveness of this technique for battery manufacturing. This breakthrough in cathode material design offers a promising pathway for the development of highperformance, durable lithium-ion batteries, particularly for applications in electric vehicles and other demanding energy storage systems. ⓘ Kim, Sujeong; Lee, Jemin; Moon, Hojun; Lee, Jaehun; Shin, Hyunsub; Lee, Jun Sung; Joo, Sang Woo; Yoo, Jeeyoung; Kang, Misook ⓘ Yeungnam Univ, Coll Nat Sci, Dept Chem, Gyongsan 38541, Gyeongbuk, South Korea; Kyungpook Natl Univ, Sch Energy Engn, Daegu 41566, South Korea; L&F Co Ltd, 11 Igokdong Ro, Daegu 42620, South Korea; Yeungnam Univ, Sch Mech Engn, Gyongsan 38541, Gyeongbuk, South Korea ⓘ Yoo, Jeeyoung/AAH-1359-2019 ⓘ 59782737000; 58959227800; 57792240400; 56797771500; 58865438100; 59214453100; 55158747900; 56046607500; 35201139000 ⓘ jyoo@knu.ac.kr;mskang@ynu.ac.kr; ⓘ CHEMICAL ENGINEERING JOURNAL ⓘ CHEM ENG J ⓘ 1385-8947 1873-3212 501 SCIE ENGINEERING, CHEMICAL;ENGINEERING, ENVIRONMENTAL ⓘ 2024 13.2 3.0 1.1 2025-05-07 ⓘ 5 5 Lithium iron phosphate cathodes; Unidirectional stacking; Long-term stability; Enhanced Li+ ion diffusion rates; Cathode material design ⓘ SOLVOTHERMAL SYNTHESIS; LIFEPO4/C COMPOSITES; ELECTRODE MATERIALS; BATTERY; NANOPARTICLES; SIZE ⓘ Cathode material design; Enhanced Li<sup>+</sup> ion diffusion rates; Lithium iron phosphate cathodes; Long-term stability; Unidirectional stacking ⓘ Binders; Layered semiconductors; Cathode material design; Cathodes material; Enhanced li+ ion diffusion rate; Ion-diffusion rate; Li +; Lithium iron phosphate cathode; Lithium iron phosphates; Long term stability; Materials design; Stackings; Unidirectional stacking; Saccharin ⓘ English 2024 2024-12-01 10.1016/j.cej.2024.157788 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Performance evaluation and sensitivity analysis of polyethyleneimine-based sorbent in a circulating fluidized bed carbon dioxide capture unit ⓘ Greenhouse gases, particularly carbon dioxide, have increased the Earth's average temperature by 1 degrees C, which has resulted in significant consequences for human life. To prevent further global warming and maintain a stable lifespan, it is imperative to achieve carbon neutrality. Post-combustion capture using an amine-based aqueous solvent is an advanced technology that has gained attention, but there are challenges such as corrosion, environmental impact, and energy consumption associated with it. This study aims to evaluate the performance of a polyethyleneimine-based sorbent in a circulating fluidized bed carbon dioxide capture unit and to determine the optimal operating conditions through sensitivity analysis. Various variables, including carbon dioxide concentration, water vapor content, desorber temperature, and sorbent residence time, were analyzed. The unit was continuously operated for 128 h even under challenging conditions with higher oxygen concentrations than the actual flue gases, and sorbent degradation was negligible. The results showed a 55 % carbon dioxide removal efficiency, a dynamic sorption capacity of 0.041 g-CO2/g-sorbent, 2 /g-sorbent, and a regeneration heat energy of 4.2 GJ/ tCO2. 2 . Sensitivity analysis revealed that there was minimal improvement even with changes in the absorber structure and physical properties of the sorbent. Only an increase in the sorbent reaction rate had a significant effect. If the reaction rate were to double, the carbon dioxide removal efficiency would reach 90 %, with a dynamic sorption capacity of 0.068 g-CO2/g-sorbent 2 /g-sorbent and regeneration heat energy of 2.9 GJ/tCO2. 2 . ⓘ Won, Yooseob; Kim, Jae-Young; Park, Young Cheol; Lee, Yu-Ri; Jo, Sung-Ho; Nam, Hyungseok; Choi, Minkee; Lee, Dong-Ho ⓘ Korea Inst Energy Res, CCS Res Dept, 152 Gajeong Ro, Daejeon 34129, South Korea; Kyungpook Natl Univ, Sch Mech Engn, 80 Daehak Ro, Daegu 41566, South Korea; Korea Adv Inst Sci & Technol, Dept Chem & Biomol Engn, 291 Daehak Ro, Daejeon 34141, South Korea ⓘ ⓘ 57212454920; 57212451216; 55494383600; 55234857100; 55246098400; 57190418228; 25923332500; 57212667420 ⓘ dongho.lee@kier.re.kr; ⓘ CHEMICAL ENGINEERING JOURNAL ⓘ CHEM ENG J ⓘ 1385-8947 1873-3212 498 SCIE ENGINEERING, CHEMICAL;ENGINEERING, ENVIRONMENTAL ⓘ 2024 13.2 3.0 0 2025-05-07 ⓘ 1 1 CCUS; Post-combustion capture; Polyethyleneimine-based sorbent; Circulating fluidized bed; Sensitivity analysis ⓘ POSTCOMBUSTION CO2 CAPTURE; SATURATION CARRYING-CAPACITY; FIRED POWER-PLANT; FLOW REGIMES; TRANSITION VELOCITIES; SOLID SORBENT; COAL; GAS; RISER; ABSORPTION ⓘ CCUS; Circulating fluidized bed; Polyethyleneimine-based sorbent; Post-combustion capture; Sensitivity analysis ⓘ Carbon capture and storage; Carbon sequestration; Direct air capture; Fluidized bed combustion; Kyoto Protocol; Reaction rates; Sensitivity analysis; Carbon dioxide capture; Carbon dioxide removal; CCUS; Circulating fluidized bed; Dynamic sorption capacity; Poly(ethyleneimine); Polyethyleneimine-based sorbent; Post-combustion captures; Removal efficiencies; Sensitivity analyzes; Carbon capture and utilization ⓘ English 2024 2024-10-15 10.1016/j.cej.2024.155482 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Peroxymonosulfate-activated photocatalytic degradation of norfloxacin via a dual Z-scheme g-C3N5/BiVO4/CoFe - LDH heterojunction: Operation and mechanistic insights ⓘ The design of novel dual Z-scheme heterojunction plays a significant path in eradicating organic contaminants via enriched charge carrier separation. Herein, a wet chemical method was used to synthesize ternary g-C3N5/BiVO4/CoFe-LDH (CBCF) nanocomposites, and their corresponding abilities were characterized as follows: crystal phases, optical properties, surface morphologies, and compositions. The g-C3N5/BiVO4/CoFe-LDH-30% (CBCF-3) sample optimized the removal efficiency of norfloxacin (NOR) by up to 95.3% through peroxymonosulfate (PMS) activation in a visible light medium. The combined effects from the Vis/PMS/CBCF-3 catalytic system led to 7-times higher degradation efficiency than visible light only system. This improved performance was attributed to the generation of reactive radical species because of higher PMS utilization and an effective Z-charge transfer process from well-oriented band structures. Moreover, scavenging tests and electron spin resonance analysis revealed the production of active radical and non-radical species, namely center dot OH, SO4 center dot-, O-center dot(2)-, and O-1(2). Based on the appropriate experimental analysis, the expected NOR degradation mechanism and possible pathways were proposed. Then, the toxicity evaluation results revealed that the intermediate products may not have an adverse effect on the aquatic ecosystems. This research study provides a positive outcome for wastewater remediation using enriched dual Z-scheme mechanism. ⓘ Lee, Eunji; Jagan, Govindan; Choi, Jong Uk; Cha, Byungjun; Yoon, Yeomin; Saravanakumar, Karunamoorthy; Park, Chang Min ⓘ Kyungpook Natl Univ, Dept Environm Engn, 80 Daehak Ro, Daegu 41566, South Korea; Ewha Womans Univ, Dept Environm Sci & Engn, 52 Ewhayeodae Gil, Seoul 03760, South Korea ⓘ Park, Chang Min/CAA-8506-2022; Karunamoorthy, Saravanakumar/Q-2005-2016; Yoon, Yeomin/KDP-2253-2024 ⓘ 57143076400; 57885044400; 57205217094; 57337280900; 7402126688; 57223020778; 57209588953 ⓘ venturoso1004@naver.com;jagan1771996@gmail.com;tech0616@naver.com;chabss7@gmail.com;yoony@cec.sc.edu;sravanan205@gmail.com;cmpark@knu.ac.kr; ⓘ CHEMICAL ENGINEERING JOURNAL ⓘ CHEM ENG J ⓘ 1385-8947 1873-3212 494 SCIE ENGINEERING, CHEMICAL;ENGINEERING, ENVIRONMENTAL ⓘ 2024 13.2 3.0 4.41 2025-05-07 ⓘ 17 18 Double Z-charge transfer; PMS initiation; g-C3N5; Reactive radical; Toxicity test ⓘ HETEROSTRUCTURE ⓘ Double Z-charge transfer; g-C<sub>3</sub>N<sub>5</sub>; PMS initiation; Reactive radical; Toxicity test ⓘ Aquatic ecosystems; Degradation; Efficiency; Heterojunctions; Magnetic moments; Optical properties; Toxicity; Double Z-charge transfer; G-C3N5; Norfloxacin; Peroxymonosulfate; Peroxymonosulphate initiation; Photocatalytic degradation; Radical species; Reactive radicals; Toxicity test; Visible light; Charge transfer ⓘ English 2024 2024-08-15 10.1016/j.cej.2024.152961 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Review ⓘ Porous carbon derived from covalent organic frameworks and relevant porous polymers: Preparation and application in adsorption and catalysis ⓘ Recent advancements in porous materials have significantly impacted energy storage/conversion and environmental remediation. Covalent organic framework (COF)-derived carbons (CDCs) have recently attracted significant scientific attention. COFs, formed by the ordered arrangement of organic linkers, create atomically precise porous frameworks but lose crystallinity upon high-temperature pyrolysis, resulting in mostly amorphous carbonaceous materials with high defect sites. Non-crystalline precursors, e.g. porous organic polymers (POPs) or covalent organic polymers (COPs), yield carbonaceous materials similar to CDCs. These materials can be synthesized using linkers similar to those in COFs. This review focuses on the preparation and applications of CDC materials in adsorption and catalysis, including those derived from POPs and COPs, while excluding those from conventional non-porous polymers. Future perspectives, together with the summary of the review, are also given to readers in the relevant fields. ⓘ Ahmed, Imteaz; Lee, Hye Jin; Jhung, Sung Hwa ⓘ Kyungpook Natl Univ, Dept Chem, Daegu 41566, South Korea ⓘ Jhung, Sung/AAO-6683-2021 ⓘ 55377179600; 56569175200; 6701659467 ⓘ imteaz2004@gmail.com;sung@knu.ac.kr; ⓘ CHEMICAL ENGINEERING JOURNAL ⓘ CHEM ENG J ⓘ 1385-8947 1873-3212 499 SCIE ENGINEERING, CHEMICAL;ENGINEERING, ENVIRONMENTAL ⓘ 2024 13.2 3.0 0.7 2025-05-07 ⓘ 7 9 Adsorptive remediation; COF-derived carbon; Covalent-organic framework; Doped carbon; Metal-free catalysis ⓘ DOPED CARBON; POROSITY CARBON; ENERGY-STORAGE; KOH ACTIVATION; SURFACE-AREA; NITROGEN; PERFORMANCE; REDUCTION; CO2; NANOPARTICLES ⓘ Adsorptive remediation; COF-derived carbon; Covalent-organic framework; Doped carbon; Metal-free catalysis ⓘ Adsorptive remediation; Carbonaceous materials; Covalent organic framework-derived carbon; Covalent organic frameworks; Derived carbons; Doped carbons; Metal-free catalysis; Porous organic polymers; Porous polymers ⓘ English 2024 2024-11-01 10.1016/j.cej.2024.156148 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Preparation of granulated UIO-66/graphene oxide using polyacrylamide/ polyvinyl alcohol for selective fluoride removal: Mechanism studies via in situ surface-enhanced raman spectroscopy analysis and continuous-flow column operation ⓘ The UIO-66 type of metal-organic frameworks (MOFs) showed excellent performance in water purification, however, the recovery difficulty for powdered UIO-66 remains challenging for the practical applications. Herein, we prepared granular adsorbents (gGO-U-N) derived from a UIO-66/GO composite and granulated them using polyacrylamide (PAM) and polyvinyl alcohol (PVA) polymers to improve F- removal capacity. The gGO-U-N resulted in C24O16Zr3 lattice contraction, improving the Coulomb interactions in Zr4+ for better F- interaction. Consequently, gGO-U-50 with 50 % (w/w) of UIO-66 mass ratio showed a higher F- adsorption capacity (102 mg g-1) than powdered UIO-66 (67 mg g-1), exhibiting high synergistic factor (fsyn = 2.1) for F- adsorption. Additionally, gGO-U-50 exhibited stable adsorption capability over a wide pH range and higher F- adsorption selectivity than gGO. Based on time-lapse Fourier transform infrared attenuated total reflection, X-ray photoelectron spectroscopy, and in situ Raman spectroscopic analysis, the Zr -O -C bond on gGO-U-50 was found to serve as the dominant F- sorption site, while the carbon-oxygen and amine groups contributed a minor portion for F- removal. Notably, the gGO-U-50 exhibited the F- water treatment cost of 1621.6 mg -F $-1, which is approximately 3 times cost-effective than the UIO-66 (632.07 mg -F $-1). Fixed-bed column experiments demonstrated that gGO-U-50 exhibited a higher F- adsorption capability (6.34 mg g-1) than other reported granular adsorbents, revealing that gGO-U-50 has the potential for F- remediation. ⓘ Yoon, So Yeon; Choong, Choe Earn; Nam, Seong-Nam; Park, Chang Min; Yoon, Yeomin; Choi, Eun Ha; Jang, Min ⓘ Kwangwoon Univ, Dept Environm Engn, 20 Kwangwoon Ro, Seoul 01897, South Korea; Kwangwoon Univ, Plasma Biosci Res Ctr, Dasanjae 101,20 Kwangwoon Ro, Seoul 01897, South Korea; Korea Army Acad Yeongcheon, Dept Chem & Environm Sci, 495 Hoguk Ro, Yeongcheon Si 38900, Gyeongsangbuk D, South Korea; Kyungpook Natl Univ, Dept Environm Engn, 80 Daehak Ro, Daegu 41566, South Korea; Ewha Womans Univ, Dept Environm Sci & Engn, 52 Ewhayeodae Gil, Seoul 03760, South Korea ⓘ ; Choong, Choe Earn/J-3005-2016; Jang, Min/M-6690-2018; Nam, Seong-Nam/ABT-9415-2022; Yoon, Yeomin/KDP-2253-2024; Jang, Min/J-2230-2012; Park, Chang Min/CAA-8506-2022 ⓘ 57218515200; 57200944393; 57226757907; 57209588953; 7402126688; 58570230700; 36762550700 ⓘ cce_@live.com;heejaejang@gmail.com; ⓘ CHEMICAL ENGINEERING JOURNAL ⓘ CHEM ENG J ⓘ 1385-8947 1873-3212 490 SCIE ENGINEERING, CHEMICAL;ENGINEERING, ENVIRONMENTAL ⓘ 2024 13.2 3.0 0.83 2025-05-07 ⓘ 5 7 Fluoride removal; Adsorption; Granulation; Graphene oxide; UIO-66; Metal-organic framework ⓘ METAL-ORGANIC FRAMEWORKS; AQUEOUS-SOLUTION; ADSORPTION; COMPOSITE; WATER; UIO-66(ZR) ⓘ Adsorption; Fluoride removal; Granulation; Graphene oxide; Metal-organic framework; UIO-66 ⓘ Cost effectiveness; Fluorine compounds; Graphene; Infrared reflection; Infrared spectroscopy; Metal recovery; Organometallics; Raman spectroscopy; Spectroscopic analysis; Spectrum analysis; Water treatment; X ray photoelectron spectroscopy; Zirconium compounds; Adsorption capability; Continuous-flow; Fluoride removal; Granular adsorbent; Graphene oxides; Mechanism studies; Metalorganic frameworks (MOFs); Removal mechanism; Surface enhanced Raman spectroscopy; UIO-66; Adsorption ⓘ English 2024 2024-06-15 10.1016/j.cej.2024.151217 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Quantification of cooking oil fumes using non-catalytic transesterification: A reliable method for indoor air quality assessment ⓘ Cooking oil fumes (COFs), which are aerosols formed via the interaction of water and oil (triglycerides, TGs), contribute to the incidence of lung cancer. Control of indoor COF concentrations has not yet been established, as reliable methods for quantifying COFs have not been developed. This study aimed to quantify COFs based on the derivatization of TGs via a non-catalytic transesterification reaction. Our investigation into the thermolytic behaviors of oil confirmed that COFs generated at = 120 min). In contrast, non-catalytic transesterification is not sensitive to impurities and can achieve a conversion yield of over 97 wt% within 1 min. The conversion yield of non-catalytic transesterification was higher than that of the alkali-catalyzed method, indicating that non-catalytic transesterification could be a more reliable method for quantifying COFs. Additionally, the concentration of COFs determined using non-catalytic derivatization was higher than that obtained using the conventional aerosol analysis method (PM gravimetric method). This approach addresses a critical gap in current practices, offering a valuable tool for assessing and regulating COF levels in indoor spaces. Consequently, this contributes to broader efforts aimed at mitigating potential adverse health effects associated with exposure to COFs. ⓘ Kim, Minyoung; Choi, Dongho; Park, Gyeongnam; Park, Jonghyun; Kim, Jee Young; Yoo, Yup; Cho, Hyungtae; Tsang, Yiu Fai; Jung, Sungyup; Kwon, Eilhann E. ⓘ Hanyang Univ, Dept Earth Resources & Environm Engn, Seoul 04763, South Korea; Korea Inst Ind Technol, Green Materials& Proc R&D Grp, 55 Jongga Ro, Ulsan 44413, South Korea; Yonsei Univ, Dept Chem & Biomol Engn, 50 Yonsei Ro, Seoul 03722, South Korea; Kyung Hee Univ, Coll Engn, Dept Chem Engn, Yongin, South Korea; Educ Univ Hong Kong, Dept Sci & Environm Studies, Hong Kong 999077, New Territories, Peoples R China; Educ Univ Hong Kong, State Key Lab Marine Pollut, Hong Kong 999077, New Territories, Peoples R China; Kyungpook Natl Univ, Dept Environm Engn, Daegu 41566, South Korea ⓘ Kwon, Eilhann/AGY-3339-2022; Tsang, Yiu/AAJ-2524-2020; Jung, Sungyup/GZG-6207-2022; Choi, Dongho/LTY-8225-2024; Cho, Hyungtae/JEO-8285-2023; Kim, Jee Young/LKL-4818-2024 ⓘ 57193932233; 57200013497; 59141730800; 58544742000; 57191420766; 57225202435; 55326115100; 22954605700; 55073290800; 9240622100 ⓘ ek2148@hanyang.ac.kr; ⓘ CHEMICAL ENGINEERING JOURNAL ⓘ CHEM ENG J ⓘ 1385-8947 1873-3212 496 SCIE ENGINEERING, CHEMICAL;ENGINEERING, ENVIRONMENTAL ⓘ 2024 13.2 3.0 0.55 2025-05-07 ⓘ 3 2 Air Pollutant; Aerosol; Cooking Oil Fumes (COFs); Volatile Organic Compounds (VOCs); Non-Catalytic Derivatization ⓘ FATTY-ACIDS; BIODIESEL PRODUCTION; GAS-CHROMATOGRAPHY; ULTRAFINE PARTICLES; CHINESE COOKING; VEGETABLE-OILS; LUNG-CANCER; EDIBLE OILS; HYDROLYSIS; EMISSIONS ⓘ Aerosol; Air Pollutant; Cooking Oil Fumes (COFs); Non-Catalytic Derivatization; Volatile Organic Compounds (VOCs) ⓘ Air quality; Catalysis; Fatty acids; Indoor air pollution; Oils and fats; Transesterification; Volatile organic compounds; Air pollutants; Conversion yield; Cooking oil fume; Derivatizations; Non-catalytic; Non-catalytic derivatization; Non-catalytic transesterification; Reliable methods; Volatile organic compound; Aerosols ⓘ English 2024 2024-09-15 10.1016/j.cej.2024.153784 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Reachable set estimation of multi-agent systems under packet losses and deception attacks ⓘ This paper considers the problem of estimating reachable set in leaderless consensus for multi-agent systems with Lipschitz nonlinear dynamics and bounded external disturbances. Initially, a sampled-data control is introduced to address the consensus of nonlinear multi-agent systems vulnerable to deception attacks and packet dropouts, which occur randomly during sampling intervals. Then, aperiodic sampling in various degrees is taken into account in the primary Lyapunov term. Sufficient conditions to guarantee that all the actual states of the multi-agent, starting from the initial state, can be bounded within a given ellipsoid set are established by designing a suitable controller. Moreover, the consensus control design is established as linear matrix inequalities, utilizing a two-sided looped functional and Wirtinger's inequality-based discontinuous Lyapunov-Krasovskii functional. Finally, the numerical section validates the applicability of the proposed control method. ⓘ Janani, V. M.; Visakamoorthi, B.; Muthukumar, P.; Hur, Sung-ho ⓘ Gandhigram Rural Inst, Dept Math, Gandhigram 624 302, Tamil Nadu, India; Kyungpook Natl Univ, Sch Elect & Elect Engn, Daegu 41566, South Korea ⓘ ; Balasubramani, Visakamoorthi/GPT-2286-2022; Moorthy, Janani/MHQ-6878-2025; Palanisamy, Muthukumar/M-8127-2018; P, Muthukumar/M-8127-2018 ⓘ 59035030000; 57219385877; 24475116900; 36455858700 ⓘ jananivmgri@gmail.com;visaka8596@knu.ac.kr;pmuthukumargri@gmail.com;shur@knu.ac.kr; ⓘ JOURNAL OF APPLIED MATHEMATICS AND COMPUTING ⓘ J APPL MATH COMPUT ⓘ 1598-5865 1865-2085 70 4 SCIE MATHEMATICS, APPLIED;MATHEMATICS ⓘ 2024 2.7 3.0 0.62 2025-05-07 ⓘ 3 4 Multi-agent systems; Sampled-data control; Packet losses; Deception attacks; Reachable set estimation ⓘ SAMPLED-DATA CONSENSUS; LEADERLESS CONSENSUS; TOPOLOGIES ⓘ Deception attacks; Multi-agent systems; Packet losses; Reachable set estimation; Sampled-data control ⓘ Linear matrix inequalities; Numerical methods; Packet loss; Sampled data control systems; 93a16; 93b03; 93c57; 93d15; 93d20; Deception attack; Packets loss; Reachable set; Reachable set estimation; Sampled-data control; Multi agent systems ⓘ English 2024 2024-08 10.1007/s12190-024-02111-6 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Reconfigurable light-responsive liquid crystal elastomer /carbon nanotube nanocomposite actuators operated by photothermal effects and dynamic exchange reaction ⓘ Monodomain liquid crystal elastomers (MLCEs), exhibiting a light-induced dynamic exchange reaction (DER) and light-triggered actuation abilities, were prepared using dispersed multiwalled carbon nanotubes (MWCNTs) and allyl sulfide linkages incorporated in the MLCE matrix. MWCNTs were dispersed in the MLCE matrix using a newly synthesized dispersant, poly(4-cyanobiphenyl-4 '-oxyundecylacrylate-co-pyrene methyl acrylate); this dispersant exhibited amphiphilic properties of pi-pi interactions with the MWCNT fillers (attributed to the pyrene moieties) and miscibility with the MLCE matrix (attributed to the cyanobiphenyl mesogenic moieties). A low amount of well-dispersed MWCNTs (<= 0.05 wt%) in the MLCE matrix induced excellent photothermal effects under near-infrared (NIR) light irradiation, leading to considerable reversible contraction/extension actuation (similar to 40 % change in length). The bilayer film comprising the MLCE and PLCE (PLCE: polydomain LCE) composite films bonded via DER without glue exhibited excellent bending actuation under NIR light irradiation and was configured into several actuators such as a flower-shaped actuator, a weightlifter, a circular rolling band, an oscillator mimicking a hummingbird, and a casting catapult. Therefore, this novel MLCE/CNT composite film enhances the design ability for the arbitrary shaping and functionalization of NIR light-triggerable LCE actuators, which can be applied to several interesting soft robots. ⓘ Oh, Hye-Won; Jeong, You-Jeong; Park, Soo-Young ⓘ Kyungpook Natl Univ, Dept Polymer Sci & Engn, Polymer Nano Mat Lab, Daegu 41566, South Korea ⓘ park, soo-young/N-3170-2017 ⓘ 58912453300; 58806441100; 57194041850 ⓘ psy@knu.ac.kr; ⓘ CHEMICAL ENGINEERING JOURNAL ⓘ CHEM ENG J ⓘ 1385-8947 1873-3212 497 SCIE ENGINEERING, CHEMICAL;ENGINEERING, ENVIRONMENTAL ⓘ 2024 13.2 3.0 1.65 2025-05-07 ⓘ 8 8 Liquid crystal elastomer; Dynamic exchange reaction; Carbon nanotube; Actuator; Photothermal effect ⓘ POLYMER; DISPERSION ⓘ Actuator; Carbon nanotube; Dynamic exchange reaction; Liquid crystal elastomer; Photothermal effect ⓘ Laser beams; Liquid crystals; Multiwalled carbon nanotubes (MWCN); Nanocomposite films; Plastic coatings; Plastic parts; Pressure pouring; Reinforced plastics; Cyanobiphenyls; Dispersants; Dynamic exchange reaction; Elastomer matrices; Exchange reaction; Liquid crystal elastomers; Monodomains; Multi-walled-carbon-nanotubes; Near infrared light; Photothermal effects; Pyrene ⓘ English 2024 2024-10-01 10.1016/j.cej.2024.154976 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Recovering precious metals from proton exchange membrane fuel cells for catalytic application in the thermo-chemical processing of plastic waste ⓘ Platinum (Pt) serves as a catalyst in proton -exchange membrane fuel cell (PEMFC). Owing to its value, recovery of Pt from PEMFC was motivated. Pt was retrieved as a Pt/C composite through the pyrolysis of a mixed matrix of a membrane electrode assembly (MEA) and a sub -gasket (SG), as part of an environmentally benign methodology. The Pt/C composite was harnessed as a catalyst for the pyrolysis of polypropylene (PP) using CO2 as the reaction medium. Both the one- and two -stage pyrolysis of PP yielded hydrocarbons (HCs) with methyl groups. However, the efficacy of CO2 remains inconclusive for both processes. Upon integration of Pt/C as a catalyst in PP pyrolysis, the chemical species were altered. The major constituents were 4-methylheptane, 2,4-dimethylheptane, p-xylene, and mesitylene. Catalytic pyrolysis of PP using CO2 over a Pt/C composite led to an increased formation of syngas, particularly CO, which is ascribed to the gas -phase interaction between CO2 and volatile matters (VMs) originating from PP. This study demonstrates that the use of a Pt/C composite as a catalyst in the pyrolysis of PP holds promise for the enhanced syngas generation, presenting a prospective avenue for more sustainable and efficient processes. ⓘ Choi, Dongho; Kwon, Dohee; Nam, Junhee; Tsang, Yiu Fai; Jung, Sungyup; Kwon, Kyungjung; Kwon, Eilhann E. ⓘ Hanyang Univ, Dept Earth Resources & Environm Engn, Seoul 04763, South Korea; Goodbyecar Corp, Yangju 11414, South Korea; Educ Univ Hong Kong, Dept Sci & Environm Studies, Hong Kong 999077, Peoples R China; Educ Univ Hong Kong, State Key Lab Marine Pollut, Hong Kong 999077, Peoples R China; Kyungpook Natl Univ, Dept Environm Engn, Daegu 41566, South Korea; Sejong Univ, Dept Energy & Mineral Resources Engn, Seoul 05006, South Korea ⓘ Choi, Dongho/LTY-8225-2024; Kwon, Eilhann/AGY-3339-2022; Tsang, Yiu/AAJ-2524-2020; Kwon, Kyungjung/AAG-8735-2020 ⓘ 57200013497; 57208275497; 58882464000; 22954605700; 55073290800; 24479380200; 9240622100 ⓘ kjkwon@sejong.ac.kr;ek2148@hanyang.ac.kr; ⓘ CHEMICAL ENGINEERING JOURNAL ⓘ CHEM ENG J ⓘ 1385-8947 1873-3212 484 SCIE ENGINEERING, CHEMICAL;ENGINEERING, ENVIRONMENTAL ⓘ 2024 13.2 3.0 1.38 2025-05-07 ⓘ 4 4 Circular economy; Proton exchange membrane fuel cell; Platinum; Thermo-chemical process; Carbon dioxide ⓘ FOSSIL-FUEL; OPTIMIZATION; HYDROGEN ⓘ Carbon dioxide; Circular economy; Platinum; Proton exchange membrane fuel cell; Thermo-chemical process ⓘ ⓘ English 2024 2024-03-15 10.1016/j.cej.2024.149251 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Selective CO2 adsorption over a Zr-based metal-organic framework functionalized with tris(2-aminoethyl)amine ⓘ Selective capture of CO2 2 from off-gas or even the atmosphere is very important against global warming. In this work, a stable Zr-based MOF (MOF-808) was loaded with -COOH group and was further functionalized with tris (2-aminoethyl)amine (TREN), via a reaction between -NH2 2 of TREN and -COOH sites. The derived materials were analyzed with X-ray diffraction, scanning electron microscopy, FTIR, X-ray photoelectron spectroscopy, thermogravimetry analysis, elemental analysis, and nitrogen adsorption at 77 K; utilized in the adsorption of CO2 2 and N2 2 at relatively low pressure up to 100 kPa. One functionalized MOF-808 prepared in this work (named MOF808-EDTA-TREN(0.3)) showed remarkable performances in the selective capture of CO2 2 under low pressure. For example, the invented MOF exhibited the highest selectivity (based on ideal adsorbed solution theory) in CO2 2 capture from N2 2 and CO2 2 (S CO2/N2 : 519 at 100 kPa) compared with any reported results, thus far, using MOF-808based materials. Moreover, MOF808-EDTA-TREN(0.3) was recyclable up to the fifth run upon vacuum treatment. The noticeable performances of MOF808-EDTA-TREN(0.3) in CO2 2 adsorption could be explained by the loaded -NH2 2 sites of TREN (that are effective in carbamates formation) and bulky TREN that decreases the nitrogen adsorption because of the reduced porosity of the MOF. In brief, loading bulky amines with ample amino groups like TREN can be suggested as an attractive way to modify a MOF for selective CO2 2 capture from off-gas of various industries. ⓘ 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 494 SCIE ENGINEERING, CHEMICAL;ENGINEERING, ENVIRONMENTAL ⓘ 2024 13.2 3.0 1.93 2025-05-07 ⓘ 7 8 Adsorption; Carbon dioxide; Metal-organic framework; MOF-808; Selectivity; Tris(2-aminoethyl)amine ⓘ CARBON-DIOXIDE CAPTURE; POROUS MATERIALS; ALKYLAMINE ⓘ Adsorption; Carbon dioxide; Metal-organic framework; MOF-808; Selectivity; Tris(2-aminoethyl)amine ⓘ Amines; Crystalline materials; Fourier transform infrared spectroscopy; Gas adsorption; Global warming; Nitrogen; Organometallics; Scanning electron microscopy; Thermogravimetric analysis; X ray photoelectron spectroscopy; A-stable; Functionalized; Low pressures; Metalorganic frameworks (MOFs); MOF-808; Nitrogen adsorption; Off-gases; Performance; Selectivity; Tris(2-aminoethyl) amine; Carbon dioxide ⓘ English 2024 2024-08-15 10.1016/j.cej.2024.153072 ⓘ 바로가기 바로가기 바로가기 바로가기
페이지 이동: