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Facile one-step synthesis of TiO2/Ag/SnO2 ternary heterostructures with enhanced visible light photocatalytic activity

Novel TiO 2 /Ag/SnO 2 composites were successfully prepared by a facile one-step reduction approach using stannous chloride as both SnO 2 precursor and reducing agent. The Ag nanoparticles with sizes of 2.04–3.94 nm were located on TiO 2 matrix and immobilized by the surrounded SnO 2 . The resulted...

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Published in:Scientific reports 2018-07, Vol.8 (1), p.1-11, Article 10532
Main Authors: Zhang, Zewu, Ma, Yuhang, Bu, Xiaohai, Wu, Qiong, Hang, Zusheng, Dong, Zhao, Wu, Xiaohan
Format: Article
Language:English
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Summary:Novel TiO 2 /Ag/SnO 2 composites were successfully prepared by a facile one-step reduction approach using stannous chloride as both SnO 2 precursor and reducing agent. The Ag nanoparticles with sizes of 2.04–3.94 nm were located on TiO 2 matrix and immobilized by the surrounded SnO 2 . The resulted TiO 2 /Ag/SnO 2 nanocomposites were used as photocatalyst for photodegradation of methylene blue under visible light. The experimental results demonstrated that the visible light photocatalytic activity of the TiO 2 /Ag/SnO 2 was significantly enhanced in comparison with the individual TiO 2 or the binary composite (TiO 2 /Ag or TiO 2 /SnO 2 ) and the degradation rate was up to about 9.5 times that of commercial TiO 2 . The photocatalytic activity of the TiO 2 /Ag/SnO 2 composites could be well controlled by simply tuning the dosages of Ag precursor and the optimized activity of the composites was obtained when the dosage of Ag precursor was 2%. Moreover, the TiO 2 /Ag/SnO 2 photocatalyst exhibited high stability for degradation of methylene blue even after four successive cycles.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-018-28832-w