Journal of Inorganic Materials ›› 2016, Vol. 31 ›› Issue (8): 845-849.DOI: 10.15541/jim20160012

• Orginal Article • Previous Articles     Next Articles

Preparation of Anatase TiO2 Nanocube with Exposed (001) Facet and Its Photocatalytic Properties

WAN Jian-Feng, HU De-Sheng, LU Peng-Hui, LIN Bi-Zhou, CHEN Yi-Lin, GAO Bi-Fen   

  1. (College of Materials Science & Engineering, Huaqiao University, Xiamen 361021, China)
  • Received:2016-01-05 Revised:2016-03-07 Published:2016-08-20 Online:2016-07-20
  • About author:WAN Jian-Feng. E-mail:
  • Supported by:
    National Natural Science Foundation of China (21103054, 21003055);Natural Science Foundation of Fujian Province (2012J05024);Promotion Program for Young and Middle-aged Teacher in Science and Technology Research of Huaqiao University (ZQN-PY206)


Anatase TiO2 single crystals with exposed (001) facets were successfully synthesized by a one-step hydrothermal route using TiF4 as raw material. The crystal phase, morphology, microstructure, and photoabsorption of the samples were analyzed by field emission scanning electron microscope (FE-SEM), transmission electron microscope (TEM), X-ray diffraction (XRD), and ultraviolet-visible diffuse reflectance spectra (UV-Vis DRS). The influences of hydrothermal temperature and pH of solution on morphology of TiO2 and exposure of (001) facets were also investigated. Photocatalytic catalysts was evaluated by degradation of acid red dye. Experimental results demonstrated that exposure of (001) facets was beneficial for improving photocatalytic performance. Under ultraviolet light irradiation, TiO2 nanocube with exposure of (001) facets ca. 33% exhibited significantly higher activity than the common TiO2 without exposed (001) facets. The photocatalytic efficiency of the former was 1.6 times as high as that of the latter. The sample with the highest exposure of (001) facets was obtained at hydrothermal temperature of 180℃ and pH of solution 4-5. The corrosion of crystal surface would occur at hydrothermal temperature higher than 180℃. In addition, the pH of solution higher than 6 was unfavorable for the adsorption of F- ions on TiO2 crystals and the stabilization of (001) facets, which led to the disappearance of (001) facets.

Key words: TiO2, hydrothermal treatment, (001) facet, photocatalysis

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