Increasing visible-light absorption for photocatalysis with black 2D Bi4Ti3O12 nanosheets

[Display omitted] •Black Bi4Ti3O12 nanosheet was synthesized.•Black Bi4Ti3O12 have oxygen vacancy and disorder layer.•Black Bi4Ti3O12 exhibited extend light absorption and high photocatalytic activity. In this work, a simple method to prepare defect two-dimension (2D) Bi4Ti3O12 nanosheets material b...

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Published inAdvanced powder technology : the international journal of the Society of Powder Technology, Japan Vol. 30; no. 5; pp. 1043 - 1050
Main Authors Liu, Xiqing, Zhou, Zhiping, Lu, Yang, Wang, Tao, Huo, Pengwei, Yan, Yongsheng
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.05.2019
Subjects
Bi4Ti3O12 nanosheets
Color changed
Mechanism
Oxygen vacancy
Photocatalytic
Color changed
Photocatalytic
Bi4Ti3O12 nanosheets
Mechanism
Oxygen vacancy
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Summary:[Display omitted] •Black Bi4Ti3O12 nanosheet was synthesized.•Black Bi4Ti3O12 have oxygen vacancy and disorder layer.•Black Bi4Ti3O12 exhibited extend light absorption and high photocatalytic activity. In this work, a simple method to prepare defect two-dimension (2D) Bi4Ti3O12 nanosheets material by NaBH4 reduction with Argon atmosphere was reported. The results of EPR and XPS demonstrated that the presence of oxygen vacancy in Bi4Ti3O12, which resulted in color changed and extend photon-absorbance. By comparing to pristine Bi4Ti3O12, the black Bi4Ti3O12 exhibited higher photocatalytic activity to pollutants. The mechanism was also proposed for exploring the defect in the photocatalytic process.
ISSN:0921-8831
1568-5527
DOI:10.1016/j.apt.2019.02.019