Title of article :
Improving the visible light photocatalytic activity of mesoporous TiO2 via the synergetic effects of B doping and Ag loading Original Research Article
Author/Authors :
Baozhu Tian، نويسنده , , Zhimang Shao، نويسنده , , Yunfei Ma، نويسنده , , Jinlong Zhang، نويسنده , , Feng Chen، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2011
Pages :
6
From page :
1290
To page :
1295
Abstract :
B-doped together with Ag-loaded mesoporous TiO2 (Ag/B–TiO2) was prepared by a two-step hydrothermal method in the presence of boric acid, triblock copolymer surfactant, and silver nitrate, followed by heat treatment. The obtained samples were characterized by X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), UV–vis diffuse reflectance spectroscopy, X-ray photoelectron spectroscopy (XPS), and nitrogen adsorption–desorption. It was revealed that all samples consist of highly crystalline anatase with mesoporous structure. For Ag/B–TiO2, B was doped into TiO2 matrix in the form of both interstitial B and substitutional B while Ag was deposited on the surface of B–TiO2 in the form of metallic silver. Compared with the single B-doped or Ag-loaded TiO2 one, mesoporous Ag/B–TiO2 exhibits much higher visible light photocatalytic activity for the degradation of Rhodamine 6G, which can be ascribed to the synergistic effects of B doping and Ag loading by narrowing the band gap of the photocatalyst and preventing the fast recombination of the photogenerated charge carriers, respectively.
Keywords :
D. Microstructure , C. X-ray diffraction , B. Chemical synthesis , A. Oxides , A. Nanostructures
Journal title :
Journal of Physics and Chemistry of Solids
Serial Year :
2011
Journal title :
Journal of Physics and Chemistry of Solids
Record number :
1311467
Link To Document :
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