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- Title
Multifunctional Mulberry‐like BiVO<sub>4</sub>−Bi<sub>2</sub>O<sub>3</sub> p‐n Heterostructures with Enhanced both Photocatalytic Reduction and Oxidation Activities.
- Authors
Huang, Lei; Hou, Dongfang; Gan, Shenglong; Qiao, Xiu‐qing; Li, Dong‐sheng
- Abstract
Rationally engineered p‐n heterojunctions with the extensive heterogeneous interfaces is a promising method to pursue high charge carrier mobility and excellent photocatalytic activity in a wide range of applications. A porous mulberry‐like BiVO4−Bi2O3 composite with p‐n heterojunctions was synthesized via a one‐pot hydrothermal approach. There exist intimate interfaces between the two semiconductors because of the in situ growth condition. The as‐obtained BiVO4−Bi2O3 heterojunctions exhibit excellent photocatalytic performance not only for CO2 and Cr(VI) reduction, but also for NO removal under visible light irradiation in contrast to pure BiVO4. The CH4 and CO yields for CO2 reduction reaches 13.16 μmol g−1 and 1.68 μmol g−1, about 47 and 25.7 times higher than that of pure BiVO4, and the highest apparent rate constant is about 56 times than that of BiVO4 in the process of Cr(VI) reduction. Further detailed characterization reveals that the enhanced and stable photocatalytic reduction and oxidation activities can be attributed to the efficient transfer and spatial separation of the photo‐induced carriers, resulting from not only p‐n heterojunctions with matched band structures, but also intimate contact and the abundant interfaces between BiVO4 and Bi2O3.
- Subjects
PHOTOREDUCTION; P-N heterojunctions; PHOTOCATALYSTS; CHARGE carrier mobility; HETEROSTRUCTURES; HETEROJUNCTIONS; PHOTOCATALYTIC oxidation
- Publication
ChemCatChem, 2021, Vol 13, Issue 14, p3357
- ISSN
1867-3880
- Publication type
Article
- DOI
10.1002/cctc.202100422