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- Title
Black phosphorus: an efficient co-catalyst for charge separation and enhanced photocatalytic hydrogen evolution.
- Authors
Wu, Jiahao; Huang, Shaolong; Jin, Zhengyuan; Chen, Jiaqi; Hu, Liang; Long, Yaojia; Lu, Jianguo; Ruan, Shuangchen; Zeng, Yu-Jia
- Abstract
Black phosphorus (BP), a phosphorus analog of graphene, is a two-dimensional material with the thickness-dependent bandgap and a high carrier mobility, which emerges as a promising material in nanoelectronics and optoelectronics. In this study, BP loaded with surface hydroxyl has been prepared by liquid ultrasonic exfoliation and used as the co-catalyst, which results in 341% photocatalytic hydrogen evolution enhancement to the anatase TiO2 under the simulated sunlight irradiation and a quantum efficiency as high as 18.23% at 365 nm. The improved photocatalytic activity has been ascribed to the Z-scheme mechanism. These results indicate that 2D surface hydroxyl-loaded BP can be used as a broadband photocatalyst by forming type II heterostructures with other wide-bandgap semiconductors.
- Subjects
PHOSPHORUS analysis; OPTICAL properties of graphene; BAND gaps; NANOELECTRONICS; OPTOELECTRONICS; HYDROGEN evolution reactions; PHOTOCATALYSIS; QUANTUM efficiency
- Publication
Journal of Materials Science, 2018, Vol 53, Issue 24, p16557
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-018-2830-2