Chinese Journal of Applied Chemistry ›› 2016, Vol. 33 ›› Issue (2): 213-220.DOI: 10.11944/j.issn.1000-0518.2016.02.150218

• Full Papers • Previous Articles     Next Articles

Preparation and Photocatalytic Kinetic of Bismuth Doped Mesoporous Titanium Dioxide

TUERDI Ailijianga,CHEN Peib,ABDUKAYUM Abdukadera*(),TUERHONG Muhetaera   

  1. aXinjiang Laboratory of Native Medicinal and Edible Plant Resources Chemistry,College of Chemistry and Environmental Science,Kashgar University,Kashgar,Xinjiang 844007,China
    bKey Laboratory of Applied Surface and Colloid Chemistry(MOE),School of Materials Science and Engineering,Shaanxi Normal University,Xi'an 710062,China
  • Received:2015-06-29 Accepted:2015-11-13 Published:2016-02-01 Online:2016-02-01
  • Contact: ABDUKAYUM Abdukader
  • Supported by:
    Supported by the Scientific Research Program of the Higher Education Institution of Xinjiang(No.XJEDU2014I038), the Research Foundation of Kashgar University(No.14-2500)

Abstract:

A Bi doped mesoporous TiO2 photocatalyst was prepared by solution impregnation method with mesoporous KIT-6 sieve as the carrier. The crystal structure and morphology of the photocatalyst was characterized with XRD, TEM, SEM, XPS, Raman spectrometer and physical adsorption instrument. Photocatalytic activity of the photocatalyst was investigated through degradation of Rhodamine B by UV-visible absorption spectrometry. The amount of doped Bi for impact on photocatalytic reaction rate and the kinetics of the photocatalytic degradation were studied. The results show that the Bi doped mesoporous TiO2 have a narrow pore size distribution(3~4 nm), and the light absorption band of photocatalyst is extended to visible light area. Therefore, the photocatalytic activity of Bi doped mesoporous TiO2 is significantly higher than that of commercial TiO2(P25). The photocatalytic degradation reaction of Rhodamine B is corresponding to an equation of first order reaction. The photocatalytic reaction rate constant increases with increasing amount of the doping Bi.

Key words: titanium dioxide, photocatalysis, Rhodamine B, kinetic