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Issue 7, 2020
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Preparation of carbon-coated brookite@anatase TiO2 heterophase junction nanocables with enhanced photocatalytic performance

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Abstract

One-dimensional TiO2@C nanocables with a heterophase junction have been successfully prepared by coating brookite@anatase TiO2 with a thin layer of hydrothermal carbon (HTC). Compared with anatase TiO2, the biphase brookite@anatase structure can reduce the recombination rate of the excited electron/hole pairs of TiO2. The HTC coating not only enhances the adsorption capability of the TiO2 catalyst for organic pollutants but also facilitates photogenerated electron transfer to further increase its photocatalytic activity. Therefore, compared with anatase TiO2, brookite@anatase TiO2, and TiO2@C, the brookite@anatase TiO2@C shows the highest photocatalytic activity for the photodegradation of tetracycline (TC) under the irradiation of UV-visible light. Moreover, ˙O2 has been proved to be the predominant active species for the photodegradation of TC, and the photocatalytic mechanism of brookite@anatase TiO2@C nanocables has also been proposed.

Graphical abstract: Preparation of carbon-coated brookite@anatase TiO2 heterophase junction nanocables with enhanced photocatalytic performance

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Supplementary files

Article information


Submitted
09 Jan 2020
Accepted
20 May 2020
First published
21 May 2020

Photochem. Photobiol. Sci., 2020,19, 966-975
Article type
Paper

Preparation of carbon-coated brookite@anatase TiO2 heterophase junction nanocables with enhanced photocatalytic performance

R. Tan, Y. Wang, Z. Jin, P. Zhang, H. Luo, D. Liu, B. B. Mamba, A. T. Kuvarega and J. Gui, Photochem. Photobiol. Sci., 2020, 19, 966
DOI: 10.1039/D0PP00004C

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