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- Title
Enhanced Photocatalytic Performance of Hierarchical ZnFe<sub>2</sub>O<sub>4</sub>/g-C<sub>3</sub>N<sub>4</sub> Heterojunction Composite Microspheres.
- Authors
Wu, Yuehan; Wang, Yu; Yang, Xu; Chen, Gang; Di, Andi
- Abstract
Abstract: Semiconductor photocatalysts with suitable band gap for fair response to visible light and efficient separation of electron-hole pairs, are the key to practical application of photocatalytic technology. Magnetically separable hierarchical ZnFe2O4/g-C3N4 composite photocatalysts were prepared by a facile solvothermal method combined with a subsequent annealing process. The composite microspheres were composed of ZnFe2O4 nanoparticles, whose diameter was restricted due to the confined space effect from g-C3N4 nanosheets. ZnFe2O4/g-C3N4 heterojunction structures led to the improvement of the efficiency for photodegrading methylene blue and rhodamine B under visible light, where the kinetic constant over ZnFe2O4/CN-150 photocatalyst was more than ten times larger than that over pure ZnFe2O4. The photogenerated electrons from g-C3N4 surfaces could easily migrate to ZnFe2O4, leading to efficient separation of electron-hole pairs. Also, the composite photocatalyst possessed a chemical stability against photocorrosion and a magnetic property, which made it magnetically separable and reusable conveniently.Graphical Abstract: <graphic></graphic>
- Subjects
PHOTOCATALYTIC oxidation; CATALYTIC oxidation; HETEROJUNCTIONS; SEMICONDUCTOR junctions; MICROSPHERES
- Publication
Catalysis Letters, 2018, Vol 148, Issue 7, p2179
- ISSN
1011-372X
- Publication type
Article
- DOI
10.1007/s10562-018-2376-6