Zhan-ying Ma, Bing-hua Yao. Preparation of BiVO4 Hollow Spheres and its Photocatalytic Degradation of Methylene Blue[J]. Chinese Journal of Chemical Physics , 2013, 26(3): 341-346. doi: 10.1063/1674-0068/26/03/341-346
Citation: Zhan-ying Ma, Bing-hua Yao. Preparation of BiVO4 Hollow Spheres and its Photocatalytic Degradation of Methylene Blue[J]. Chinese Journal of Chemical Physics , 2013, 26(3): 341-346. doi: 10.1063/1674-0068/26/03/341-346

Preparation of BiVO4 Hollow Spheres and its Photocatalytic Degradation of Methylene Blue

doi: 10.1063/1674-0068/26/03/341-346
Funds:  This work was supported by the Doctor Fundation of Education Ministry of China (No.20096118110008), the Key Program for Science and Technology Development of Shaannxi province of China (No.2011K17-03-02), the Special Research Fund of Shaanxi Provincial Depart-ment of Education of China (No.12JK0606), and the Research Fund for Excellent Doctoral Thesis of Xi'an University of Technology (No.106-210914).
  • Received Date: 2012-12-30
  • Monoclinic BiVO4 hollow nanospheres were successfully prepared via template-free method using citric acid (C6H8O7) as chelating agent and characterized by X-ray diffraction patterns, transmission electron microscope, UV-Vis DRS, and TG-DTA technique. C6H8O7 played an important role in the formation of hollow spheres. Morphology observations revealed that when appropriate amount ofC6H8O7 was introduced, the cavity with the diameter of 40 nm was obtained in BiVO4 nanospheres. UV-Vis diffuse reflectance spectra indicated that the samples had absorption in both UV and visible light region. The photocatalytic activities were evaluated by the degradation of methylene blue under Xe lamp irradiation. Hollow spheres endow BiVO4samples with greatly improved photocatalytic activity. A possible formation mechanism of hollow spheres was proposed.
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Preparation of BiVO4 Hollow Spheres and its Photocatalytic Degradation of Methylene Blue

doi: 10.1063/1674-0068/26/03/341-346
Funds:  This work was supported by the Doctor Fundation of Education Ministry of China (No.20096118110008), the Key Program for Science and Technology Development of Shaannxi province of China (No.2011K17-03-02), the Special Research Fund of Shaanxi Provincial Depart-ment of Education of China (No.12JK0606), and the Research Fund for Excellent Doctoral Thesis of Xi'an University of Technology (No.106-210914).

Abstract: Monoclinic BiVO4 hollow nanospheres were successfully prepared via template-free method using citric acid (C6H8O7) as chelating agent and characterized by X-ray diffraction patterns, transmission electron microscope, UV-Vis DRS, and TG-DTA technique. C6H8O7 played an important role in the formation of hollow spheres. Morphology observations revealed that when appropriate amount ofC6H8O7 was introduced, the cavity with the diameter of 40 nm was obtained in BiVO4 nanospheres. UV-Vis diffuse reflectance spectra indicated that the samples had absorption in both UV and visible light region. The photocatalytic activities were evaluated by the degradation of methylene blue under Xe lamp irradiation. Hollow spheres endow BiVO4samples with greatly improved photocatalytic activity. A possible formation mechanism of hollow spheres was proposed.

Zhan-ying Ma, Bing-hua Yao. Preparation of BiVO4 Hollow Spheres and its Photocatalytic Degradation of Methylene Blue[J]. Chinese Journal of Chemical Physics , 2013, 26(3): 341-346. doi: 10.1063/1674-0068/26/03/341-346
Citation: Zhan-ying Ma, Bing-hua Yao. Preparation of BiVO4 Hollow Spheres and its Photocatalytic Degradation of Methylene Blue[J]. Chinese Journal of Chemical Physics , 2013, 26(3): 341-346. doi: 10.1063/1674-0068/26/03/341-346

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