Affiliation:
1. School of Chemistry and Chemical Engineering Institute for Energy Research School of the Environment and Safety Engineering Jiangsu University Zhenjiang 212013 P. R. China
2. State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology College of Chemical Engineering Zhejiang University of Technology Hangzhou 310014 P. R. China
Abstract
Photocatalytic CO2 reduction is a prospective pathway to solve energy and environmental problems. Slow charge migration and insufficient active sites are pivotal obstacles to inhibit efficient photocatalytic CO2 reduction. Herein, cobalt–tetrakis(4‐carboxyphenyl)porphyrin (CoTCPP)/Bi12O17Br2 photocatalysts are successfully assembled by interfacial bridge Bi–O bonds between CoTCPP and Bi12O17Br2. The rearranged strong coupling interface in CoTCPP/Bi12O17Br2 enhances carrier polarization, allowing photoelectrons to directionally transfer and to aggregate at Co atoms. This polarization strategy facilitates rapid charge transportation and efficient CO2 activation, resulting in an improvement in CO2 photoreduction ability. After 5 h irradiation, the 0.2 wt% CoTCPP/Bi12O17Br2 exhibits a significantly enhanced photocatalytic CO2 reduction with a CO yield of 369.55 μmol g−1 (3.73 times that of Bi12O17Br2), achieving 100% product selectivity. In this work, an insight is provided for constructing efficient charge‐transfer structure through interfacial polarization strategy.
Funder
National Natural Science Foundation of China
Subject
Electrical and Electronic Engineering,Energy Engineering and Power Technology,Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials