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- Title
Micro-/nanostructured ZnFe<sub>2</sub>O<sub>4</sub> hollow sphere/GO composite for structurally enhanced photocatalysis performance.
- Authors
Zhao, Yang-Yang; Wang, Xian-Biao; Xu, Qian-Kun; Chakir, Soufian; Xu, Yong-Fei; Xu, Bao; Hu, Yong-Hua
- Abstract
The pollution of organic dyes has become a serious environmental problem. It is still urgent to prepare a highly efficient and environment-friendly photocatalyst for pollutants removal. Herein, a micro-/nanostructured ZnFe2O4 hollow sphere/GO (ZnFe2O4/GO) composite photocatalyst was prepared through a one-step hydrothermal method with high performance and recycling property. The obtained micro-/nanostructured composite was assembled by ZnFe2O4 hollow spheres and GO nanosheets. The special self-assembled hollow nanosphere structure enlarged visible light harvesting. In addition, luminescence property demonstrates that the introduction of graphene oxide (GO) inhibits the recombination of electron–hole pairs, leading to enhancement of photocatalytic activity of ZnFe2O4. Under visible light irradiation, the ZnFe2O4/GO composite exhibited excellent photocatalytic activity for Congo red (93%), higher than that of the pure ZnFe2O4 hollow spheres (only 60%) and commercial ZnFe2O4 nanoparticles (40%). Moreover, the micro-/nanostructured ZnFe2O4/GO composite photocatalyst can be regenerated with high efficiency and remains over 80% activity after seven regenerations. This work not only supplies a new strategy for one-step preparation of such ZnFe2O4/GO micro-/nanostructures for structurally enhanced photocatalysis, but also provides a highly efficient photocatalyst for wastewater treatment.
- Publication
Rare Metals, 2023, Vol 42, Issue 3, p813
- ISSN
1001-0521
- Publication type
Letter
- DOI
10.1007/s12598-022-02200-0