Enhanced Visible-light-driven Photocatalytic Performance of In2O3-loaded TiO2 Nanocubes with Exposed (001) Facet

doi:10.1007/s40242-017-7133-7

Chemical Research in Chinese Universities ›› 2017, Vol. 33 ›› Issue (6): 934-938.doi: 10.1007/s40242-017-7133-7

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Enhanced Visible-light-driven Photocatalytic Performance of In₂O₃-loaded TiO₂ Nanocubes with Exposed (001) Facet

GAO Bifen, WAN Jianfeng, HU Desheng, CHEN Yilin, LIN Bizhou

Department of Applied Chemistry, College of Materials Science and Engineering, Huaqiao University, Xiamen 361021, P. R. China

Received:2017-04-11 Revised:2017-04-27 Online:2017-12-01 Published:2017-06-12
Contact: GAO Bifen,E-mail:bfgao@hqu.edu.cn E-mail:bfgao@hqu.edu.cn
Supported by:
Supported by the National Natural Science Foundation of China(No.21103054), the Natural Science Foundation of Fujian Province of China(Nos.2017J01014, 2012J05024) and the Promotion Program for Young and Middle-aged Teachers in Science and Technology Research of Huaqiao University, China(No.ZQN-PY206).

Abstract

Abstract: The heterostructures of In₂O₃ nanoparticle loaded on anatase TiO₂ nanocube with exposed (001) facet (In₂O₃/TiO₂-nanocube) were fabricated via a two-step hydrothermal process. The crystal phase, morphology, micro-structure and photo-absorption property of the products were characterized by FESEM, TEM, XRD, and UV-Vis diffuse reflectance spectroscopy. The results showed that the percentage of exposed (001) facet of TiO₂ nanocube was about 33%. In₂O₃ nanoparticles were successfully decorated on the surface of TiO₂ nanocube to form the In₂O₃/TiO₂ heterojunction. Photocurrent measurements confirmed that (001) faceted surface was advantageous for the charge carrier migration and separation in the composites. In comparison with bare TiO₂ nanocube and In₂O₃/TiO₂-nanoparticle, the In₂O₃/TiO₂-nanocube heterostructures exhibited enhanced activity toward the degradation of rhodamine B and tetracycline under visible light irradiation, which was attributed to the synergic effect of In₂O₃/TiO₂ heterojunction and the exposure of (001) facet.

Key words: Photocatalytic activity, Heterojunction, Crystal facet, In₂O₃-loaded TiO₂ nanocube

GAO Bifen, WAN Jianfeng, HU Desheng, CHEN Yilin, LIN Bizhou. Enhanced Visible-light-driven Photocatalytic Performance of In₂O₃-loaded TiO₂ Nanocubes with Exposed (001) Facet[J]. Chemical Research in Chinese Universities, 2017, 33(6): 934-938.

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Enhanced Visible-light-driven Photocatalytic Performance of In₂O₃-loaded TiO₂ Nanocubes with Exposed (001) Facet

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