期刊
NANOMATERIALS
卷 12, 期 24, 页码 -出版社
MDPI
DOI: 10.3390/nano12244428
关键词
type-II heterojunction; photocatalyst; photocatalytic hydrogen evolution; charge separation
类别
资金
- National Science and Technology Major project [2019-VII-0007-0147]
- China Postdoctoral Science Foundation [2022M712501]
- Natural Science Foundation of Shaanxi Province [2021GXLH-Z-O, 2020JZ-02]
- project of Innovative Team of Shaanxi Province [2020TD-001]
- Shccig-Qinling Program
- China Fundamental Research Funds for the Central Universities
- World-Class Universities (Disciplines) Fund for the Central Universities
- Characteristic Development Guidance Fund for the Central Universities
In this study, a type-II heterostructured photocatalyst was constructed by compositing P-CN and Rh-STO to promote charge separation. The obtained P-CN/Rh-STO showed superior photocatalytic activity compared to the single component due to the formation of the heterojunction and effective charge separation.
It is of great importance to promote charge separation in photocatalysts for enhanced photocatalytic activity under visible light irradiation. In this work, a type-II heterostructured photocatalyst was constructed by compositing phosphorus-doped g-C3N4 (P-CN) and Rh-doped SrTiO3 (Rh-STO) via a thermal calcination treatment. A series of characterizations were conducted to investigate the structure of heterostructured P-CN/Rh-STO. It was found that Rh-STO interacted with in situ generated P atoms from the decomposition of P-CN during the calcination process, thus leading to the formation of heterojunction of P-CN/Rh-STO. Compared with the single component, i.e., P-CN or Rh-STO, the obtained P-CN/Rh-STO showed superior photocatalytic activity to that of both P-CN and Rh-STO due to the effective charge separation across the heterojunction between P-CN and Rh-STO.
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