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- Title
The Construction of p/n-Cu 2 O Heterojunction Catalysts for Efficient CO 2 Photoelectric Reduction.
- Authors
Zhou, Qianqian; Chen, Yanxin; Shi, Haoyan; Chen, Rui; Ji, Minghao; Li, Kexian; Wang, Hailong; Jiang, Xia; Lu, Canzhong
- Abstract
Cu2O is a p-type direct bandgap semiconductor with a band gap of 2~2.2 eV, which has excellent visible light absorption and utilization. However, slow charge transfer and poor stability hinder its practical application. In this paper, a facile electrodeposition approach successfully synthesized the heterostructure of p-Cu2O and n-Cu2O. The protective layer of n-Cu2O on the surface of p-Cu2O nanoparticles forms a p/n heterojunction. Due to the p/n heterojunction, the PEC performance of p/n-Cu2O is enhanced significantly. The charge separation efficiency of photogenerated electron/hole pairs in p/n-Cu2O is greatly improved. Therefore, p/n-Cu2O shows superior photoelectrochemical (PEC) CO2 reduction reaction (CO2RR) efficiency when used as a photocathode.
- Subjects
HETEROJUNCTIONS; CARBON dioxide; BAND gaps; CHARGE transfer; CATALYSTS; VISIBLE spectra; ELECTROFORMING
- Publication
Catalysts (2073-4344), 2023, Vol 13, Issue 5, p857
- ISSN
2073-4344
- Publication type
Article
- DOI
10.3390/catal13050857