Article
Multidisciplinary Sciences
Yannan Liu, Chuanshuang Chen, Jesus Valdez, Debora Motta Meira, Wanting He, Yong Wang, Catalin Harnagea, Qiongqiong Lu, Tugrul Guner, Hao Wang, Cheng-Hao Liu, Qingzhe Zhang, Shengyun Huang, Aycan Yurtsever, Mohamed Chaker, Dongling Ma
Summary: This study successfully prepared a hierarchical homojunction based on metal-organic frameworks as photocatalysts for CO2 reduction using a convenient synthesis route.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Leily Majidi, Alireza Ahmadiparidari, Nannan Shan, Saurabh N. Misal, Khagesh Kumar, Zhehao Huang, Sina Rastegar, Zahra Hemmat, Xiaodong Zou, Peter Zapol, Jordi Cabana, Larry A. Curtiss, Amin Salehi-Khojin
Summary: A 2D copper-based conductive MOF, Cu-THQ, exhibits excellent catalytic activity for aqueous CO2 reduction reaction (CO2RR) with low overpotentials. The material shows high CO production rate and current density at low overpotentials, making it a promising candidate for practical applications in CO2RR.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Dae-Hyun Nam, Osama Shekhah, Adnan Ozden, Christopher McCallum, Fengwang Li, Xue Wang, Yanwei Lum, Taemin Lee, Jun Li, Joshua Wicks, Andrew Johnston, David Sinton, Mohamed Eddaoudi, Edward H. Sargent
Summary: A metal-organic framework (MOF)-functionalized gas diffusion electrode (GDE) design is proposed for high-rate conversion of CO2 to ethylene. The MOF enhances the CO2 concentration near the catalyst active sites, leading to increased ethylene production rate.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Physical
Syed Shoaib Ahmad Shah, Tayyaba Najam, Ming Wen, Shuang-Quan Zang, Amir Waseem, Hai-Long Jiang
Summary: Metal-organic frameworks (MOFs) are a promising class of electrocatalysts for CO2 reduction, characterized by high porosity and large surface area. By enhancing performance, exploring the structure-activity relationship, and employing specific structure tuning strategies, novel catalysts can be designed effectively.
Article
Chemistry, Multidisciplinary
Shubo Geng, Hang Xu, Chun-Shuai Cao, Tony Pham, Bin Zhao, Zhenjie Zhang
Summary: Adsorption-based removal of carbon dioxide (CO2) from gas mixtures has shown great potential for solving energy security and environmental sustainability challenges. However, the current CO2-selective sorbents have limited selectivity due to the similar physicochemical properties between CO2 and other gases. In this study, a bioinspired design strategy is used to create a robust, microporous metal-organic framework (MOF) that selectively removes CO2 from various gas mixtures, achieving highly efficient CO2 separations.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Engineering, Environmental
Guodong Zhao, Jingyu Pan, Chang Liu, Yinghe Hu, Zhe Gao, Xupin Zhuang
Summary: This study presents a new method to develop lightweight, robust, and multiscale porous sulfone-functionalized UiO-67 aerogels for highly selective removal of CO2 from natural gas. The aerogels exhibit high loading mass, low density, high specific surface area, and large porosity, and maintain high CO2 adsorption capacity even after multiple cycles.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Yulong Ying, Bahareh Khezri, Jiri Kosina, Martin Pumera
Summary: In this study, a bismuth-containing metal-organic framework CAU-17 was prepared and employed as an electrocatalyst for highly selective CO2-to-formate conversion. Morphology engineering was utilized to construct a hierarchical structure for CAU-17-fiber, achieving efficient formate production with high selectivity.
Article
Chemistry, Physical
Chunying Chen, Qijie Mo, Yongsheng Huang, Li Zhang
Summary: The selective reduction of CO2 to methanol has been achieved by using a metal-organic framework catalyst (Ir-PCN-222). The catalyst showed high catalytic activity and selectivity under atmospheric CO2 pressure. The concentration balance between CO2 and hydrosilanes in the confined catalytic spaces of Ir-PCN-222 was found to play an important role in product selectivity.
Article
Chemistry, Analytical
Jinsheng Wu, Zhan Li, Hongxin Tan, Shaobo Du, Tianqi Liu, Yanli Yuan, Xiuhui Liu, Hongdeng Qiu
Summary: Rare earth elements are widely used in various devices, but achieving their selective separation and purification remains a challenge. Metal-organic frameworks (MOFs) have been utilized for selective separation of REEs, but most cannot be used for solid-state adsorption of REEs in strong acid. A new composite material was developed with the best separation performance for REEs.
ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Hyeok Joon Jun, Dong Kyu Yoo, Sung Hwa Jhung
Summary: In this study, a Zr-based metal-organic framework (MOF), MOF-808, was functionalized with ethyleneamines to selectively capture CO2 from offgas under low pressure. Among the tested ethyleneamines, tetraethylenepentamine (TEPA) showed the most effective modification. The functionalized TEPA MOF-808 exhibited remarkable performance in CO2 capture due to the loaded primary and secondary amino groups.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Chemistry, Multidisciplinary
Fengyang Yu, Xu Jing, Yao Wang, Mingyang Sun, Chunying Duan
Summary: The synthesis of composites by integrating MoS2 nanosheets into hierarchically porous defective UiO-66 to form Mo-O-Zr bimetallic sites on the interfaces achieves efficient photo-catalytic conversion of CO2 to CH3COOH. The composite shows high evolution rate and selectivity for C2 production, eliminating unwanted C1 products.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Jingzheng Zhang, Bing An, Yonghua Cao, Zhe Li, Jiawei Chen, Xuefeng He, Cheng Wang
Summary: The research focuses on the activity of ZnO supported on ZrO2 in hydrogenating CO2 to methanol and emphasizes the importance of the local structure at the ZnO/ZrO2 interface in catalysis. By supporting ZnO on Zr-based metal-organic framework (MOF) nanoplates, an efficient catalyst for CO2 hydrogenation to methanol was constructed.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
James N. Burrow, Ryan A. Ciufo, Lettie A. Smith, Yu Wang, David C. Calabro, Graeme Henkelman, C. Buddie Mullins
Summary: Ca2+ acts as a structure-directing agent to transform melon-based carbon nitride to crystalline CaPHI with ordered pore channels, extended visible light absorption, and altered band structure as compared to KPHI. Protons can replace Ca2+ atoms in CaPHI to enhance porosity without disrupting crystal structure. The proton-exchanged PHI frameworks exhibit high adsorption affinity for CO2 and exceptional performance for selective carbon capture.
Article
Chemistry, Multidisciplinary
Tingting Yan, Peng Wang, Wei-Yin Sun
Summary: In this study, a tandem electrocatalyst, Cu-MOF-CF, combining Cu foil (CF) with a single-site Cu(II) metal-organic framework (MOF), is reported to achieve improved electrochemical CO2 reduction reaction (CO2RR) performance. Cu-MOF-CF exhibits suppression of CH4 production, significant increase in C2H4 selectivity (48.6%), and enhanced partial current density of C2H4 at -1.11 V versus reversible hydrogen electrode. The remarkable performance of Cu-MOF-CF is attributed to the improved microenvironment of Cu active sites inhibiting CH4 production, more CO intermediate produced by single-site Cu-MOF in situ for CF, and the enlarged active surface area by porous Cu-MOF. This work provides a strategy for combining MOFs with copper-based electrocatalysts to establish high-efficiency electrocatalytic CO2RR.
Article
Chemistry, Multidisciplinary
Yanze Liu, Shuai Li, Lu Dai, Jiani Li, Jianning Lv, Zhejiaji Zhu, Anxiang Yin, Pengfei Li, Bo Wang
Summary: 2D conjugated MOFs have gained significant interest due to their unique structural features and promising properties, with HATNA-based ligand contributing to the construction of a highly crystalline and porous framework for electrocatalytic reduction of CO2 to methane with high selectivity.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Physics, Applied
Moonchan Lee, Changyong Yim, Sangmin Jeon
APPLIED PHYSICS LETTERS
(2015)
Article
Chemistry, Multidisciplinary
Changyong Yim, Moonchan Lee, Wuseok Kim, Sanghee Lee, Gook-Hee Kim, Kyong Tae Kim, Sangmin Jeon
CHEMICAL COMMUNICATIONS
(2015)
Article
Chemistry, Physical
Moonchan Lee, Changyong Yim, Sangmin Jeon
JOURNAL OF CHEMICAL PHYSICS
(2015)
Article
Chemistry, Analytical
Moonchan Lee, Sanghee Lee, Changyong Yim, Sangmin Jeon
SENSORS AND ACTUATORS B-CHEMICAL
(2015)
Article
Nanoscience & Nanotechnology
Changyong Yim, Allen Sandwell, Simon S. Park
ACS APPLIED MATERIALS & INTERFACES
(2016)
Article
Chemistry, Multidisciplinary
Changyong Yim, Hyeonjeong Lee, Sanghee Lee, Sangmin Jeon
Article
Chemistry, Multidisciplinary
Sanghee Lee, Changyong Yim, Sangmin Jeon
Article
Chemistry, Multidisciplinary
Changyong Yim, Osama Abuzalat, Mohamed Elsayed, Simon Park, Seonghwan Kim
CRYSTAL GROWTH & DESIGN
(2018)
Article
Chemistry, Multidisciplinary
Yunjae Hwang, Jisoo Kim, Changyong Yim, Hyung Wook Park
Summary: Thermal oxidation resistance is crucial in printed electronics to maintain electrical conductivity over time and in harsh environments. This study used large pulsed electron beam irradiation to fabricate copper nanoparticles-based conductive tracks with high thermal oxidation resistance, demonstrating excellent performance in maintaining electrical conductivity at high temperatures without the need for additional protection additives.
Article
Chemistry, Multidisciplinary
Tae Ho Yun, Changyong Yim
Summary: In this study, hollow titania was synthesized and used as a photocatalyst to provide anti-contamination properties to IR-reflective coatings. By controlling the sintering temperature, enhancements in light absorption, photocatalytic activity, and thermal shielding were observed. The manifestation of hollow particles in degrading dust characteristics and enhancing reflection and thermal shielding was confirmed through various measurements and tests on coated steel.
Article
Materials Science, Ceramics
Ninad B. Velhal, Tae Ho Yun, Junhyuck Ahn, Taewook Kim, Jisoo Kim, Changyong Yim
Summary: Different micro- and nanostructures of cobalt oxide are grown on Ni foam using surface-modifying agents via a simple one-pot hydrothermal synthesis process. The electrochemical measurements demonstrate that the dandelion flower-like morphology obtained via CTAB delivers the highest specific capacitance. The surface modification of Co3O4 material improved the charge storage performance of the electrodes for supercapacitor applications.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
Donghyun Lee, Tae Ho Yun, Jung Gi Min, Youngchul Byun, Changyong Yim
Summary: With the aim of achieving zero-waste technology and enhancing industrial waste recycling, we utilized aqueous ammonia to optimize the recovery of sodium bicarbonate from desulfurization waste. The waste contained a high sodium sulfate content of 86.2%, and the initial stages of the reaction using ammonia gas resulted in insufficient yield due to the rapid deposition of undesired ammonium bicarbonate. To overcome this issue, we examined the effect of ammonia solution dosage in detail. The regenerated sodium bicarbonate from desulfurization waste exhibited comparable yield/purity to pure sodium sulfate, with percentages of 58.2/85.9% and 56.6/91.5%, respectively. Furthermore, the as-regenerated sample showed superior desulfurization performance (97% removal rate) compared to commercial sodium bicarbonate (88.6%) at a feeding rate of 5 g/min for 200 ppm SO2 gas.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Chemistry, Physical
Ninad B. Velhal, Junhyuck Ahn, Tae Ho Yun, Taewook Kim, Minsu Gu, Jisoo Kim, Changyong Yim
Summary: In this study, a cobalt oxide (Co3O4) supercapacitor electrode was prepared using ultrafast annealing, leading to enhanced supercapacitive performance. The resulting Co3O4 material exhibited a coral reef-like morphology with a high surface area and a melted ice-like structure. The improved performance of the ultrafast annealed Co3O4 was attributed to its pseudocapacitive nature, unique morphology, and excellent cyclic stability. Assembled hybrid asymmetric supercapacitors showed a specific capacitance of 128.13 F/g with excellent retention capability over 5000 charge-discharge cycles.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Daewoong Kim, Jakyung Eun, Junhyuck Ahn, Changyong Yim, Sangmin Jeon
Summary: A method for fabricating moisture-induced power generators (MPGs) using flashlight-induced graphitization was developed. FeCl3-impregnated cellulose papers were converted to graphitized cellulose papers (GCPs) by flashlight irradiation, and a hierarchically porous structure was formed. The concentration gradient of dissociated Fe3+ ions within a bilayered cellulose paper (BCP) led to the generation of potential difference and electron movement along the external circuit, resulting in continuous voltage and current outputs. The BCP-based MPG exhibited the highest continuous current density value observed under ambient humidity conditions.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Changyong Yim, Zachary A. Kockerbeck, Sae Byeok Jo, Simon S. Park
ACS APPLIED MATERIALS & INTERFACES
(2017)