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Journal of Materials Science: Materials in Electronics

Effect of SiO2–ZrO2 introduction on visible-light degradation of RhB over anatase TiO2

  • 20-07-2020
Published in:
Authors
Changqing Liu
Xu Li
Luyue Zhang
Xiaoxiao Yuan
Yuanting Wu
Xiufeng Wang
Published in
Journal of Materials Science: Materials in Electronics | Issue 17/2020

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Abstract

A TiO2-based ternary oxide was synthesized as a visible-light photocatalyst (TiO2/ZrTiO4/SiO2, SZT) by introducing SiO2–ZrO2 into TiO2 through sol–gel method. The related material compositions and microstructures were characterized, and the optical and photochemical performances were evaluated and compared with pure anatase TiO2. By introducing SiO2–ZrO2, the grain size of TiO2 was reduced from 29.9 nm in the pure anatase phase to 11.5 nm in SZT, accompanied by the formation of ZrTiO4. Moreover, the synthesized SZT demonstrated greatly lowered photoluminescence intensity and electrochemical impedance, and significantly increased photocurrent. The new photocatalyst also exhibited superior adsorption and photocatalytic ability for RhB, and higher catalytic stability. The improved photodegradation performance was attributed to the enhanced charge transfer and charge carrier separation as a result of the refined grains, the formation of TiO2/ZrTiO4 heterojunction, and a higher amount of built-in oxygen vacancies.

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Title
Effect of SiO2–ZrO2 introduction on visible-light degradation of RhB over anatase TiO2
Authors
Changqing Liu
Xu Li
Luyue Zhang
Xiaoxiao Yuan
Yuanting Wu
Xiufeng Wang
Publication date
20-07-2020
Publisher
Springer US
Published in
Journal of Materials Science: Materials in Electronics / Issue 17/2020
Print ISSN: 0957-4522
Electronic ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-020-03978-4
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