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Erschienen in: Journal of Materials Science: Materials in Electronics 11/2018

19.03.2018

Facial-hydroxylated pure-phase BiFeO3 with controllable micro-morphology: performance as a highly efficient visible light photocatalyst

verfasst von: Yang Liu, Guowang Xu, Hui Lv, Yiwan Chen, Gang Deng, Ling Pei, Zhengfu Tong

Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 11/2018

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Abstract

The pure-phase BiFeO3 crystals with distinguished micro-morphologies were successfully prepared by a novel coprecipitation-hydrothermal collaborative synthesis method. Hydroxylation technique was innovatively employed to hydroxylate BiFeO3 samples. XPS and PL spectra proved that hydroxylation treatment indeed introduced more ·OH radicals on the surfaces of the BiFeO3 samples. Sample E (hydroxylated BiFeO3 ultra-thin slices) showed the highest photocatalytic activity. Hydroxylated BiFeO3 prepared in this work also showed high activities in water photo-oxidation reactions for producing oxygen gas. All hydroxylated samples showed notably enhanced photocatalytic activities due to the large specific surface areas, strong visible light responses, diminished recombination rates of the photo-excited carriers and excess ·OH radicals introduced by surface hydroxylation. All BiFeO3 samples showed good photochemical stabilities for reusage. This work provides valuable contributions in the future preparations and applications for BiFeO3 photocatalysts.

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Metadaten
Titel
Facial-hydroxylated pure-phase BiFeO3 with controllable micro-morphology: performance as a highly efficient visible light photocatalyst
verfasst von
Yang Liu
Guowang Xu
Hui Lv
Yiwan Chen
Gang Deng
Ling Pei
Zhengfu Tong
Publikationsdatum
19.03.2018
Verlag
Springer US
Erschienen in
Journal of Materials Science: Materials in Electronics / Ausgabe 11/2018
Print ISSN: 0957-4522
Elektronische ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-018-8939-x

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