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- Title
Visible light photocatalysis: efficient Z-scheme LaFeO<sub>3</sub>/g-C<sub>3</sub>N<sub>4</sub>/ZnO photocatalyst for phenol degradation.
- Authors
Cui, Jinggang; Xu, Chang; Jin, Zehua; Liu, Hongwei; Hu, Ruisheng; Liu, Fenrong
- Abstract
In this work, a Z-scheme LaFeO3/g-C3N4/ZnO heterojunction photocatalyst with large specific surface (68.758 m2/g) and low cost (0.00035 times the cost of per gram of Au) was easily synthesized by glucose-assisted hydrothermal method. The structure, surface morphology, and optical properties of the photocatalyst were investigated. The constructed Z-scheme heterojunction catalysts can enhance the visible light absorption and carrier separation efficiency. Among these photocatalysts, the 10%-LaFeO3/g-C3N4/ZnO composite possesses the premium performance for efficient degrading 97.43% of phenol within 120 min. Even after 5 cycles, it still sustains an excellent photocatalytic stability (92.13% phenol degradation). According to the XPS surface states and the capture of active species on LaFeO3/g-C3N4/ZnO, the electrons would be transferred from ZnO and LaFeO3 to g-C3N4. In addition, ·OH plays an important role in photocatalytic reactions for phenol degradation. Thus, the proposed possible photocatalytic reaction mechanism of Z-scheme LaFeO3/g-C3N4/ZnO can provide a more economical and efficient conception for phenol degradation.
- Subjects
VISIBLE spectra; PHENOL; PHOTOCATALYSIS; SURFACE states; LIGHT absorption
- Publication
Environmental Science & Pollution Research, 2023, Vol 30, Issue 43, p96875
- ISSN
0944-1344
- Publication type
Article
- DOI
10.1007/s11356-023-29199-w