Article
Nanoscience & Nanotechnology
Juan Wang, Zhihua Zhang, Yangyang Li, Yuanyuan Qu, Yongqiang Li, Weifeng Li, Mingwen Zhao
Summary: This study investigates the use of transition-metal atoms anchored to two-dimensional covalent-organic frameworks for single-atom catalysis in ammonia synthesis. Through a screening process, WPc-TFPN is identified as the best SAC for nitrogen reduction reaction with a low limiting potential of -0.19 V, and multiple-level descriptors are developed to uncover the origins of NRR activity.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Hanghang Zhu, Wei David Wang, Feng Li, Xun Sun, Boyang Li, Qiang Song, Jinfang Kou, Kexin Ma, Xuanguang Ren, Zhengping Dong
Summary: The study focuses on utilizing covalent triazine frameworks to support ultrafine Pd nanoparticles as a catalyst, demonstrating high catalytic activity and thermal stability in N-alkylation reactions. This research provides new insights for the fabrication of organic supporting materials with highly dispersed active catalytic sites.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Pengyu Dong, Yan Wang, Aicaijun Zhang, Ting Cheng, Xinguo Xi, Jinlong Zhang
Summary: This study demonstrates the controllable synthesis of single-atom platinum photocatalysts with high metal content and long-term durability. The optimized Pt-1@TpPa-1 catalyst exhibits a high photocatalytic H-2 evolution rate and significant activity improvement compared to Pt nanoparticles/TpPa-1 and bare TpPa-1, attributed to effective charge separation and well-dispersed active sites of single-atom Pt. The research provides insights for designing single-atom-based photocatalysts with outstanding stability and efficiency using covalent organic frameworks as support.
Review
Chemistry, Multidisciplinary
Andree Iemhoff, Maurice Vennewald, Regina Palkovits
Summary: Heterogeneous single-site and single-atom catalysts are promising for combining the advantages of molecular catalysts and solid catalysts. Covalent triazine frameworks (CTFs) have been studied as support materials for coordinating and stabilizing metal species, serving as model systems for understanding the interactions between different metal species and the supports.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Review
Chemistry, Multidisciplinary
Yufei Yuan, Ki-Taek Bang, Rui Wang, Yoonseob Kim
Summary: Macrocycles can be effectively utilized by incorporating them into covalent organic frameworks (COFs), overcoming the aggregation issue and enabling their unique activities in various fields such as catalysis, adsorption, optoelectronics, phototherapy, and structural design.
ADVANCED MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Dmitri A. Bulushev, Fedor S. Golub, Svetlana Trubina, Valentina V. Zvereva, Lyubov G. Bulusheva, Evgeny Y. Gerasimov, Miriam Navlani-Garcia, Anna D. Krot, Himanshu Sekhar Jena
Summary: In this study, we synthesized single-atom Pd catalysts supported on different materials and tested their catalytic performance in formic acid decomposition for hydrogen production. The Pd/CTF-1 catalyst showed the highest performance, while the Pd/bipyCTF catalyst exhibited very high selectivity at higher temperatures.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Changxia Li, Patrick Guggenberger, Seung Won Han, Wei-Lu Ding, Freddy Kleitz
Summary: Covalent organic frameworks (COFs) have great potential as adsorbents due to their tailorable functionalities, low density, and high porosity. Constructing ultrathin COFs can increase the exposure of active sites to targeted molecules and enhance the adsorption capacity through a three-dimensional macroporous structure and well-exposed adsorption sites.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Xiaolun Zhu, Nan He, Junxia Ding, Ruimei Yue, Simin He, Wentong Liu, Nijuan Liu, Ruibin Guo, Zunli Mo
Summary: In this study, an electrocatalyst derived from covalent organic frameworks (COFs) anchored by pyrolytically active bimetals (Fe/Co) was developed for oxygen evolution reaction (OER). The COF-derived catalyst exhibited stable and high OER performance, surpassing commercial RuO2 and most oxygen electrocatalysts. This work expands new horizons and pathways for the development of OER electrocatalysts based on COFs.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Minghao Liu, Sijia Liu, Qing Xu, Qiyang Miao, Shuai Yang, Svenja Hanson, George Zheng Chen, Jun He, Zheng Jiang, Gaofeng Zeng
Summary: In this study, we demonstrated the role of dual atomic catalytic sites in the electrochemical carbon dioxide reduction reaction (CO2RR) using a core-shell hybrid of the covalent-organic framework and the metal-organic framework. With abundant dual atomic sites (CoN4O and ZnN4) on hollow carbon, the catalyst exhibited high activity and selectivity for CO2RR, achieving a Faradic efficiency for CO of 92.6% at -0.8 V and a turnover frequency value of 1370.24 h^(-1) at -1.0 V. The catalyst also showed excellent stability for 30 hours. Theoretical calculations revealed the main role of CoN4O in CO2RR and improved activity and selectivity of Zn sites due to synergistic effects.
Article
Multidisciplinary Sciences
Zhuwei Li, Shi Qiu, Yurou Song, Shiyu Huang, Junfeng Gao, Licheng Sun, Jungang Hou
Summary: Photoredox catalysis has become an indispensable solution for the synthesis of small organic molecules. This study develops a facile approach to immobilize single-atom Ni sites anchored porous covalent organic framework (COF) for visible-light-driven catalytic carbon-nitrogen cross-coupling reactions. The catalyst exhibits excellent catalytic performance under mild conditions and can be recycled.
Article
Chemistry, Multidisciplinary
Meng-Ting Ming, Yu-Chen Wang, Wei-Xue Tao, Wen-Jie Shi, Di-Chang Zhong, Tong-Bu Lu
Summary: Unlocking the potential of sustainable fuel production through the development of highly efficient CO2 reduction catalysts under visible light irradiation remains an ongoing challenge. Herein, a strategically designed Zr-based metal-organic framework (MOF) photocatalyst, incorporating binuclear cobalt complexes as catalytic sites, achieved an impressive CO yield, outperforming its mononuclear counterpart and showcasing exceptional catalytic capabilities. Experimental findings and Density Functional Theory (DFT) calculations revealed the synergistic catalytic effect between the two Co sites and the heightened light absorption attributed to the incorporation of the amino group. By offering a bioinspired approach to designing efficient dual-atom MOF photocatalysts for CO2 reduction, this study has significant implications for the future of sustainable energy production.
Article
Chemistry, Multidisciplinary
Yining Jia, Rong Huang, Ruijuan Qi
Summary: This study successfully prepared high-loading iron single atoms catalysts anchored onto carbon matrix/g-C3N4 hybrid supports through a single-atom migration-trapping method based on metal-organic framework pyrolysis. The electrochemical results showed that the obtained catalyst exhibited better half-wave potential and onset potential compared to other catalysts, indicating high activity of the exposed active sites.
Article
Chemistry, Multidisciplinary
Yu Fu, Yue Wu, Shuhui Chen, Wenxiang Zhang, Ying Zhang, Tong Yan, Bolun Yang, Heping Ma
Summary: Ionic covalent organic frameworks (COFs) with zwitterionic groups exhibit high SO2 adsorption capacity and impressive SO2/CO2 selectivity due to the separated cationic and anionic groups in their channels. The zwitterionic groups in COFs' channels can induce complete proton carrier deprotonation, leading to outstanding anhydrous proton conductivity. This work opens up possibilities for designing well-defined zwitterionic frameworks for gas separation and ion conduction.
Article
Chemistry, Physical
Qiyang Miao, Shuai Yang, Qing Xu, Minghao Liu, Ping Wu, Guojuan Liu, Chengbin Yu, Zheng Jiang, Yuhan Sun, Gaofeng Zeng
Summary: In this study, a synergistic bimetal atomic electrocatalyst based on a core-shell hybrid of COF and MOF is demonstrated, which exhibits high catalytic activity for ORR with highly dense Zn and Fe sites. Operando experiments and DFT calculations confirm the active centers of Zn and Fe sites in the catalyst and demonstrate the synergistic effect to enhance the activity of ORR.
Article
Chemistry, Multidisciplinary
Mingan Zhou, Minghao Liu, Qiyang Miao, Hengfu Shui, Qing Xu
Summary: Pt atoms and nanoparticles derived from COFs show high catalytic activity for oxygen reduction reaction in acidic medium.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Chemistry, Physical
Siyun Qi, Feng Li, Junru Wang, Yuanyuan Qu, Yanmei Yang, Weifeng Li, Mingwen Zhao
Article
Chemistry, Physical
Laiying Jing, Gang Lian, Junru Wang, Mingwen Zhao, Xizheng Liu, Qilong Wang, Deliang Cui, Ching-Ping Wong
Article
Chemistry, Physical
Xiaohan Song, Junru Wang, Siyun Qi, Yingcai Fan, Weifeng Li, Mingwen Zhao
JOURNAL OF PHYSICAL CHEMISTRY C
(2019)
Article
Chemistry, Physical
Junru Wang, Siyun Qi, Xiaohan Song, Yuanyuan Qu, Weifeng Li, Mingwen Zhao
APPLIED SURFACE SCIENCE
(2019)
Article
Multidisciplinary Sciences
Yingcai Fan, Xikui Ma, Junru Wang, Xiaohan Song, Aizhu Wang, Hong Liu, Mingwen Zhao
Article
Chemistry, Physical
Juan Wang, Junru Wang, Xiaohan Song, Siyun Qi, Mingwen Zhao
APPLIED SURFACE SCIENCE
(2020)
Article
Chemistry, Physical
Junru Wang, Yingcai Fan, Siyun Qi, Weifeng Li, Mingwen Zhao
JOURNAL OF PHYSICAL CHEMISTRY C
(2020)
Article
Multidisciplinary Sciences
Siyun Qi, Junru Wang, Xiaohan Song, Yingcai Fan, Weifeng Li, Aijun Du, Mingwen Zhao
Article
Nanoscience & Nanotechnology
Junru Wang, Feng Li, Zhichao Liu, Zhenhong Dai, Shuxia Gao, Mingwen Zhao
Summary: The study identified specific 2D metal-organic frameworks that can effectively suppress the dissolution and shuttling of LiPSs, showing good electrical conductivity and high sulfur loading, which are important for overcoming the challenges faced by LiSBs.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Xiaohan Song, Hongxia Bu, Yingcai Fan, Junru Wang, Mingwen Zhao
Summary: Based on first-principles calculations, this study proposed an integral strategy for the production and storage of hydrogen in carbon nanotubes via photocatalytic processes. The core-shell structure, formed by placing a carbon nitride nanowire inside a carbon nanotube, enables effective water splitting and hydrogen generation. The high hydrogen storage capacity of carbon nanotubes makes this core-shell structure a promising candidate system for photocatalytic water splitting and safe hydrogen storage.
Article
Chemistry, Multidisciplinary
Wenqing Zhang, Juan Wang, Lanling Zhao, Junru Wang, Mingwen Zhao
Article
Chemistry, Physical
Lu Wang, Feng Li, Junru Wang, Yixiang Li, Weifeng Li, Yanmei Yang, Mingwen Zhao, Yuanyuan Qu
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2020)
Article
Chemistry, Multidisciplinary
Siyun Qi, Yingcai Fan, Junru Wang, Xiaohan Song, Weifeng Li, Mingwen Zhao
Article
Chemistry, Multidisciplinary
Yingcai Fan, Junru Wang, Mingwen Zhao