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Citation: Weijiong Dai, Junqing Yan, Ke Dai, Landong Li, Naijia Guan. Ultrafine metal nanoparticles loaded on TiO2 nanorods: Synthesis strategy and photocatalytic activity[J]. Chinese Journal of Catalysis, ;2015, 36(11): 1968-1975. doi: 10.1016/S1872-2067(15)60954-8 shu

Ultrafine metal nanoparticles loaded on TiO2 nanorods: Synthesis strategy and photocatalytic activity

  • 1.

    a College of Science, Huazhong Agricultural University, Wuhan 430070, Hubei, China;

  • Corresponding author: Ke Dai,  Naijia Guan, 
  • Received Date: 17 June 2015
    Available Online: 29 June 2015

    Fund Project: 国家自然科学基金(21307035) (21307035)

  • Ultrafine noble metal nanoparticles (Pt, Pd, or Au) co-catalyst loaded on the surface of rutile and brookite TiO2 were prepared via a simple photo-deposition strategy under high vacuum conditions. The properties of the prepared samples were determined by different characterization techniques, including X-ray diffraction, transmission electron microscopy, diffuse reflectance ultraviolet-visible spectroscopy, and photoluminescence spectroscopy. The photocatalytic performance of the samples was evaluated by monitoring the reforming of methanol. Co-catalyst loading greatly improved the photocatalytic activity of TiO2. Specifically, Pt-TiO2 displayed the highest photocatalytic activity among all samples studied, followed by Pd-TiO2 and then Au-TiO2. Furthermore, this photocatalytic behavior was not influenced by the intrinsic nature of the TiO2 semiconductor photocatalyst. Similar photocatalytic activity trends were achieved with both sets of noble metal-loaded photocatalysts prepared using rutile and brookite TiO2 as supports. By examining the physicochemical and photocatalytic properties, the factors controlling the photocatalytic activity of the noble metal-loaded TiO2 samples were discussed in detail.
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