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Start Over Author "Li, Xinghua" Journal journal of colloid and interface science
16 results on '"Li, Xinghua"'

16. Bi 2 MoO 6 /BiFeO 3 heterojunction nanofibers: Enhanced photocatalytic activity, charge separation mechanism and magnetic separability.

Author

Tao R, Shao C, Li X, Li X, Liu S, Yang S, Zhao C, and Liu Y

Abstract

Uniform Bi 2 MoO 6 nanosheets were grown in a high dispersed fashion on electrospun BiFeO 3 nanofibers via a solvothermal technique. The loading amount of Bi 2 MoO 6 in the Bi 2 MoO 6 /BiFeO 3 heterojunction nanofibers could be controlled by adjusting the precursor concentrations in the solvothermal process. The XPS analysis, energy band position calculation and trapping experiments all proved that the Bi 2 MoO 6 /BiFeO 3 heterojunction is a Z-scheme heterojunction. The Z-scheme Bi 2 MoO 6 /BiFeO 3 heterojunction had a much higher photocatalytic activity in the visible-light photodegradation of Rhodamine B (RhB) and tetracycline hydrochloride (TC) than pure BiFeO 3 nanofibers or pure Bi 2 MoO 6 nanosheets. The enhanced photocatalytic activity was attributed to the formation of Z-scheme Bi 2 MoO 6 /BiFeO 3 heterojunctions, which could be beneficial to the separation of photogenerated electron-hole pairs. Moreover, the Bi 2 MoO 6 /BiFeO 3 heterojunction nanofibers could be easily separated under an external magnetic field via the ferromagnetic BiFeO 3 . After several cycles, the photocatalytic activity of the Bi 2 MoO 6 /BiFeO 3 heterojunction no longer significantly decreased suggesting that the Bi 2 MoO 6 /BiFeO 3 heterojunction is stable. These Z-scheme Bi 2 MoO 6 /BiFeO 3 heterojunction nanofibers with highly visible-light photocatalytic activity, excellent chemical stability and magnetic separability could be useful in many practical applications., (Copyright © 2018. Published by Elsevier Inc.)

Published
2018
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