Promoting charge separation by rational integration of a covalent organic framework on a BiVO4 photoanode

Bin Gao; Xingyu Yu; Tao Wang; Hao Gong; Xiaoli Fan; Hairong Xue; Cheng Jiang; Kun Chang; Xianli Huang; Jianping He

doi:10.1039/d1cc07047a

Promoting charge separation by rational integration of a covalent organic framework on a BiVO₄ photoanode

Chem Commun (Camb). 2022 Feb 3;58(11):1796-1799. doi: 10.1039/d1cc07047a.

Authors

Bin Gao¹, Xingyu Yu¹, Tao Wang¹, Hao Gong², Xiaoli Fan³, Hairong Xue¹, Cheng Jiang¹, Kun Chang¹, Xianli Huang¹, Jianping He¹

Affiliations

¹ College of Materials Science and Technology, Jiangsu Key Laboratory of Materials and Technology for Energy Conversion, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, P. R. China. wangtao0729@nuaa.edu.cn.
² Department of Chemistry and Materials Science, College of Science, Nanjing Forestry University, Nanjing 210037, P. R. China.
³ School of Materials Science and Engineering, Nanjing Institute of Technology, Nanjing 211167, P. R. China.

PMID: 35040459
DOI: 10.1039/d1cc07047a

Abstract

For the first time, covalent organic frameworks (COF-TpPa and COF-TpPaC) are selected to combine with the BiVO₄ photoanode through a covalent bond. The heterojunction and covalent connection of COFs and BiVO₄ can promote the separation of carriers, and the -CH₃ on the benzene ring in COF-TpPaC as an electron donor group can increase the carrier concentration of the photoanode. As a result, the TpPaC/BiVO₄ photoanode shows the best performance. This covalent hybridization strategy opens a new insight into the development of COF-modified photoanodes.