Article
Chemistry, Multidisciplinary
Qianjun Zhi, Jun Zhou, Wenbo Liu, Lei Gong, Wenping Liu, Heyuan Liu, Kang Wang, Jianzhuang Jiang
Summary: The study presents the construction of a Z-scheme artificial photosynthesis system using 2D imide-based covalent organic polymer nanosheets (CoPcPDA-CMP NSs) for photocatalytic CO2 reduction. The CoPcPDA-CMP NSs demonstrated excellent photocatalytic activity in reducing CO2 to CO using H2O as an electron donor. The spectroscopy experiments confirmed the Z-scheme photocatalytic mechanism.
Article
Chemistry, Multidisciplinary
Wen-Da Zhang, Lang Zhou, Ya-Xiang Shi, Yong Liu, Hanwen Xu, Xiaodong Yan, Yan Zhao, Yuqin Jiang, Jiangwei Zhang, Zhi-Guo Gu
Summary: Bonded Fe dual-atom catalysts (Fe(2)DAC) with Fe2N6C8O2 configuration were fabricated by one-step carbonization of a preorganized covalent organic framework with bimetallic Fe chelation sites (Fe2COF). The transformation from Fe2COF to Fe(2)DAC involved the dissociation of nanoparticles and the capture of atoms by carbon defects. Due to the optimized d-band center and enhanced adsorption of OOH* intermediates, Fe(2)DAC exhibited outstanding oxygen reduction activity with a half-wave potential of 0.898 V vs. RHE. This work will guide future research on the fabrication of dual-atom and even cluster catalysts from preorganized COF.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Yun Song, Peng Guo, Tinghao Ma, Jianjun Su, Libei Huang, Weihua Guo, Yong Liu, Geng Li, Yinger Xin, Qiang Zhang, Siwei Zhang, Hanchen Shen, Xing Feng, Dengtao Yang, Jia Tian, Sai Kishore Ravi, Ben Zhong Tang, Ruquan Ye
Summary: This study reports the development of ultrathin cationic cobalt-phthalocyanine-based covalent organic nanosheets (iminium-CONs) for efficient electrochemical CO2-to-CH3OH conversion. The iminium-CONs exhibit significantly enhanced selectivity and methanol partial current density.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Baiwei Ma, Fujia Hu, Xin Yang, Yongyu Huang, Xiubei Yang, Huijie Qiao, Zhuo Wang, Dehong Yang, Wenying Ai, Liwei Mi
Summary: Recently, crystalline covalent organic frameworks (COFs) have shown excellent performance in photocatalytic conversions due to their great photoelectric properties. Two new conjugated pyrene-based COFs, named PyDF-COF and PyBMT-COF, were successfully synthesized via condensation polymerization. These COFs exhibit highly selective aerobic hydroxylation of arylboronic acids with high yields and wide substrate universality. PyBMT-COF demonstrates a more efficient ability for this aerobic hydroxylation compared to PyDF-COF, which can be attributed to the electron-donating thiomethyl groups, resulting in enhanced distribution of the electron cloud and improved photoelectrochemical properties.
APPLIED CATALYSIS A-GENERAL
(2023)
Review
Chemistry, Multidisciplinary
James W. M. Crawley, Isla E. Gow, Naomi Lawes, Igor Kowalec, Lara Kabalan, C. Richard A. Catlow, Andrew J. Logsdail, Stuart H. Taylor, Nicholas F. Dummer, Graham J. Hutchings
Summary: The development and application of trimetallic nanoparticles are rapidly accelerating in the field of catalysis, presenting exciting opportunities. Current methods for design, synthesis, analysis, and application of trimetallic nanoparticles have been explored, but challenges in controlling elemental segregation and identifying influential characteristics remain. The multielement composition of trimetallic nanoparticles exhibits beneficial synergy in oxidation, dehydrogenation, and hydrogenation reactions, but further work is needed to maximize productivity. Computational support is crucial for experimental endeavors, and the marriage of simulation and experiment is necessary to advance this field. Clear challenges remain in identifying, making, and applying trimetallic catalysts efficiently, but the outlook is strong.
Article
Chemistry, Physical
Ting Jiang, Weicun Jiang, Yaling Li, Yunshi Xu, Mingyu Zhao, Mengyuan Deng, Yi Wang
Summary: This study demonstrates that N-doped carbon nanospheres derived from COF precursors showed excellent ORR activity, with Fe3+ coordination further enhancing the ORR performance of Fe-N-CNS. Fe-N-CNS exhibited good durability and methanol tolerance, paving the way for COF-derived carbon-based electrocatalysts for highly-efficient ORR.
Review
Chemistry, Multidisciplinary
Liyuan Xiao, Zhenlu Wang, Jingqi Guan
Summary: This paper provides a detailed review of the topological structure design and synthesis methods of covalent organic frameworks (COFs), and analyzes their design principles. It also summarizes the applications of COFs and their derivatives in the field of electrocatalysis, and proposes optimization strategies. Finally, it explores the application prospects and challenges of COFs and their derivatives in electrocatalysis, providing guidance for future research.
ADVANCED FUNCTIONAL MATERIALS
(2023)
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
Materials Science, Multidisciplinary
Saeid Asghari, Iraj Mohammadpoor-Baltork, Hassan Sabzyan, Shahram Tangestaninejad, Majid Moghadam, Valiollah Mirkhani, Forouz Rastegari
Summary: This paper presents a study on the synthesis and applications of an amine-linked COF (IR-COF) with excellent catalytic performance and acid sensing capabilities. The IR-COF can efficiently catalyze the synthesis of tetrahydro-4H-chromenes and exhibits immediate color change upon exposure to hydrochloric acid.
APPLIED MATERIALS TODAY
(2023)
Review
Chemistry, Inorganic & Nuclear
Jintu Francis Kurisingal, Hyojin Kim, Jong Hyeak Choe, Chang Seop Hong
Summary: This article reviews recent progress in the design, synthesis, and catalytic mechanisms of COF-based functional materials for CO2 utilization reactions. It discusses various CO2 utilization reactions, such as photo/electrocatalytic CO2 reduction, cycloaddition, carboxylation, and hydrogenation, and evaluates the application of different types of COFs. The challenges and prospects of COF-based catalysts for CO2 utilization are highlighted.
COORDINATION CHEMISTRY REVIEWS
(2022)
Article
Chemistry, Multidisciplinary
Mohammad A. Khalilzadeh, Soo Young Kim, Ho Won Jang, Rafael Luque, Rajender S. Varma, Richard A. Venditti, Mohammadreza Shokouhimehr
Summary: This review article presents the progress in utilizing carbohydrate-based nanostructured catalysts for organic transformations. These catalysts have abundant sources, low cost, and renewability, and can be applied in greener and environmentally friendly processes.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Yun Song, Jun-Jie Zhang, Yubing Dou, Zhaohua Zhu, Jianjun Su, Libei Huang, Weihua Guo, Xiaohu Cao, Le Cheng, Zonglong Zhu, Zhenhua Zhang, Xiaoyan Zhong, Dengtao Yang, Zhaoyu Wang, Ben Zhong Tang, Boris Yakobson, Ruquan Ye
Summary: In this study, an electrocatalyst of atomically thin, cobalt-porphyrin-based, ionic-covalent organic nanosheets (CoTAP-iCONs) is synthesized via a post-synthetic modification strategy for high-performance CO2-to-CO conversion. The CoTAP-iCONs exhibit higher CO2RR activity compared to other cobalt-porphyrin-based structures and have excellent stability and low onset overpotential when applied to a flow cell.
ADVANCED MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Meng Lu, Mi Zhang, Jiang Liu, Yifa Chen, Jia-Peng Liao, Ming-Yi Yang, Yue-Peng Cai, Shun-Li Li, Ya-Qian Lan
Summary: The photo-/electrocatalytic reduction of CO2 and utilization of CO2 as a supporter for energy storage have shown great potential, but face obstacles such as inefficient uptake/activation of CO2 and mass transport in catalysts. Covalent organic frameworks (COFs) have been explored as catalysts for CO2 conversion due to their unique features.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Materials Science, Multidisciplinary
Ze Li, Mengyu Di, Yantao Zhang, Boying Zhang, Zhenni Zhang, Zhiwei Zhang, Aijun Li, Shanlin Qiao
Summary: Catalytic oxidation of styrene to benzaldehyde, an important process in industry and academia, often faces challenges in achieving high yield. In this study, a covalent triazine framework (CTF) loaded with Pd clusters was used as a catalyst for the oxidation reaction, resulting in a high product yield of 95%. The heteropore structure of the CTF anchored more exposed active sites, leading to excellent catalytic performance with high stability. The coordination of pyridine nitrogen atoms in the catalyst framework with Pd clusters improved chemical stability, while well-provided transport channels accelerated mass transfer between reactants and products.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Fangpei Ma, Ying Wen, Ping Fu, Junjun Zhang, Qingping Tang, Tao Chen, Wen Luo, Yu Zhou, Jun Wang
Summary: This study demonstrates that 2D covalent organic framework (COF) nanosheets effectively disperse and stabilize 0D Ni(OH)(2) for efficient CO2 photoreduction. The coupling of low-dimensional materials and high-dimensional materials for the construction of active sites and electron transport channels improves the photocatalytic performance.
