journal article·2018-08

Bi2WO6/ZnFe2O4 heterostructures nanofibers: Enhanced visible-light photocatalytic activity and magnetically separable property

Ran Tao, Chengcheng Zhao, Changlu Shao, Xinghua Li, Xiaowei Li, Jian Zhang, Shu Yang, Yichun Liu

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Abstract

Abstract Bi 2 WO 6 nanosheets were uniformly grown on electrospun ZnFe 2 O 4 nanofibers via a solvothermal technique. The loading amounts of Bi 2 WO 6 in the Bi 2 WO 6 /ZnFe 2 O 4 heterostructures nanofibers could be controlled by adjusting the precursor concentration in solvothermal process. Under visible-light irradiation, the degradation rate constant (rhodamine B) of the Bi 2 WO 6 /ZnFe 2 O 4 heterostructures was 11.6 times than that of pure ZnFe 2 O 4 nanofibers and 5.8 times than that of pure Bi 2 WO 6 nanosheets, mainly owing to the effective separation of the photogenerated electron-hole pairs in the Bi 2 WO 6 /ZnFe 2 O 4 heterostructures. Notably, the Bi 2 WO 6 /ZnFe 2 O 4 heterostructures nanofibers could be easily separated from the solution under an external magnetic field by employing the ferromagnetic behaviors of ZnFe 2 O 4 . After several cycles, the photocatalytic activity of the Bi 2 WO 6 /ZnFe 2 O 4 heterostructures nanofibers did not decrease significantly suggesting that the Bi 2 WO 6 /ZnFe 2 O 4 heterostructures possess stable characteristics. This kind of Bi 2 WO 6 /ZnFe 2 O 4 heterostructures nanofibers with high visible-light photocatalytic activity, excellent stability and excellent recyclability could be significance in environmental application.
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Research context

OpenAlex topics: Advanced Photocatalysis Techniques · ZnO doping and properties · Ga2O3 and related materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

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