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Journal of Materials Science
Erschienen in: Journal of Materials Science 24/2016

19.08.2016 | Original Paper

Facile regulation of crystalline phases and exposed facets on Ti3+ self-doped TiO2 for efficient photocatalytic hydrogen evolution

verfasst von: Xiaofeng Cui, Guiyuan Jiang, Zhen Zhao, Chunming Xu, Weikun Bai, Yajun Wang, Aijun Duan, Jian Liu, Yuechang Wei

Erschienen in: Journal of Materials Science | Ausgabe 24/2016

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Abstract

The control of the photocatalytic activity of TiO2 by tailoring their crystalline structure and electronic structure is a current topic of great interest. In the present study, the phase composition and exposed facets on Ti3+ self-doped TiO2 were regulated by simply changing the fluorinion concentration during the hydrothermal synthesis process of TiO2. It was found that the phase composition can be tuned facilely, and the phase transformation process was analyzed by XRD and UV Raman spectroscopy. The introducing fluorinion during the hydrothermal preparation of TiO2 resulted in F-doping and phase transformation. And the F-doping also affects the amount of Ti3+ ions in the TiO2. SEM analysis indicated that the morphology and exposed facets changed with the change in fluorinion concentration, and the ratios of exposed facets are adjustable. Through systematically optimizing these parameters, the TiO2 prepared under fluorinion concentration of 17.5 mM showed the excellent photocatalytic performance under full spectrum illumination. The good photocatalytic performance was mainly attributed to the more phase junctions and surface heterojunctions for enhancing charge separation.
Vorheriger Artikel First-principles study of organically modified muscovite mica with ammonium (NH) or methylammonium (CHNH) ion
Nächster Artikel Synthesis and characterization of trifluoromethyl-containing polyimide-modified epoxy resins

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Metadaten
Titel
Facile regulation of crystalline phases and exposed facets on Ti3+ self-doped TiO2 for efficient photocatalytic hydrogen evolution
verfasst von
Xiaofeng Cui
Guiyuan Jiang
Zhen Zhao
Chunming Xu
Weikun Bai
Yajun Wang
Aijun Duan
Jian Liu
Yuechang Wei
Publikationsdatum
19.08.2016
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 24/2016
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-016-0293-x

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