Please use this identifier to cite or link to this item: https://doi.org/10.1007/s11426-019-9658-1
Title: Cobalt-containing covalent organic frameworks for visible light-driven hydrogen evolution
Authors: Wang, Jian 
Zhang, Jian 
Peh, Shing Bo 
Liu, Guoliang 
Kundu, Tanay 
Dong, Jinqiao 
Ying, Yunpan 
Qian, Yuhong 
Zhao, Dan 
Keywords: Science & Technology
Physical Sciences
Chemistry, Multidisciplinary
Chemistry
Covalent organic frameworks (COFs)
Photocatalytic H-2 evolution
Non-precious-metal
Post-synthetic modification
Co (II)-cooperation
H-2 EVOLUTION
WATER
CARBON
Issue Date: 1-Feb-2020
Publisher: Springer Verlag
Citation: Wang, Jian, Zhang, Jian, Peh, Shing Bo, Liu, Guoliang, Kundu, Tanay, Dong, Jinqiao, Ying, Yunpan, Qian, Yuhong, Zhao, Dan (2020-02-01). Cobalt-containing covalent organic frameworks for visible light-driven hydrogen evolution. SCIENCE CHINA-CHEMISTRY 63 (2) : 192-197. ScholarBank@NUS Repository. https://doi.org/10.1007/s11426-019-9658-1
Abstract: © 2019, Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature. Covalent organic frameworks (COFs) have recently emerged as a new class of photocatalysts. However, integrated design is crucial to maximizing the performance of COF-incorporating photocatalytic systems. Herein, we compare two strategies of installing earth-abundant metal-based catalytic centers into the matrice of a 2D COF named NUS-55. Compared to NUS-55(Co) prepared from the post-synthetic metalation of coordination sites within the COF, the molecular co-catalyst impregnated NUS-55/[Co(bpy)3]Cl2 achieves a seven-fold improvement in visible light-driven H2 evolution rate to 2,480 µmol g−1 h−1, with an apparent quantum efficiency (AQE) of 1.55% at 450 nm. Our results show that the rational design of molecular anchoring sites in COFs for the introduction of catalytic metal sites can be a viable strategy for the development of highly efficient photocatalysts with enhanced stability and photocatalytic activities.
Source Title: SCIENCE CHINA-CHEMISTRY
URI: https://scholarbank.nus.edu.sg/handle/10635/169755
ISSN: 16747291
18691870
DOI: 10.1007/s11426-019-9658-1
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