Acta Phys. -Chim. Sin. ›› 2013, Vol. 29 ›› Issue (12): 2608-2614.doi: 10.3866/PKU.WHXB201310312

• CATALYSIS AND SURFACE SCIENCE • Previous Articles     Next Articles

Preparation and Visible Light Photocatalytic Activity of 3D-NiO/Bi7.47Ni0.53O11.73 Photocatalysts

GUI Ming-Sheng, WANG Peng-Fei, YUAN Dong, TANG Miao-Miao   

  1. College of Materials and Chemical Engineering, Sichuan University of Science & Engineering, Zigong 643000, Sichuan Province, P. R. China
  • Received:2013-09-13 Revised:2013-10-30 Published:2013-11-28
  • Contact: GUI Ming-Sheng E-mail:guimingsheng@126.com
  • Supported by:

    The project was supported by the Education Department Scientific Research Projects of Sichuan Province, China (13ZB0137), Talents Project of Sichuan University of Science & Engineering, China (2012RC05), and Student Research Program of Sichuan Province, China.

Abstract:

Three-dimensional (3D)-NiO/Bi7.47Ni0.53O11.73 (BiNiO) microspheres were synthesized by a mixed solvothermal process in the presence of urea. The catalysts were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS), and photodegradation of methyl orange (MO). The results show that the composite catalysts are composed of NiO nanosheets and 3D-NiO/Bi7.47Ni0.53O11.73 microspheres. The sample BiNiO-300, which was prepared by heating the precursor at 300 ℃ for 2 h, had the best photocatalytic activity: after visible-light irradiation for 3 h, the decolorization of an MO solution was 98%.

Key words: Composite, Photocatalytic, Visible light, Methyl orange

MSC2000: 

  • O643.3