Journal of Inorganic Materials ›› 2016, Vol. 31 ›› Issue (4): 407-412.DOI: 10.15541/jim20150448

• Orginal Article • Previous Articles     Next Articles

Photocatalytic Performance of Nano-TiO2/Diatomite Composite

ZHANG Guang-Xin, DONG Xiong-Bo, ZHENG Shui-Lin   

  1. (School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China)
  • Received:2015-10-18 Revised:2015-10-28 Published:2016-04-20 Online:2016-03-25
  • About author:ZHANG Guang-Xin. E-mail:
  • Supported by:
    National Technology R&D Program in the 12th five years plan of China (2011BAB03B07)


Nano-TiO2/diatomite composite was synthesized by hydrolysis-deposition method using diatomite as supporter and titanium tetrachloride as precursor. The prepared composite was characterized by X-ray diffraction, scanning electron microscopy and N2 adsorption-desorption. The photocatalytic property of composite was determined by Rhodamine B as a target pollutant. The effects of various parameters that affect the photocatalytic properties of composite were studied. The results show that anatase TiO2 loaded on the surface of diatomite in agglomerate and disperse states. The catalyst dosage, dye solution pH, inorganic ions and illumination intensity could affect the photocatalytic activity of TiO2/diatomite composite in different degrees. The photocatalytic degradation rate of Rhodamine B was up to 99.8% under the conditions as follows: 10 mg/L initial dye concentration, 1.0 g/L catalyst dosage, 300 W UV light intensity, and 60 min illumination time.

Key words: TiO2/diatomite, XRD, photocatalysis, Rhodamine B

CLC Number: