Acta Phys. -Chim. Sin. ›› 2011, Vol. 27 ›› Issue (09): 2191-2199.doi: 10.3866/PKU.WHXB20110924

• CATALYSIS AND SURFACE SCIENCE • Previous Articles     Next Articles

Photocatalytic Degradation of Gaseous 1,2-Dichlorobenzene over TiO2/AC Photocatalysts

LU Sheng-Yong, HUANG Yi-Long, WANG Qiu-Lin, LI Xiao-Dong, YAN Jian-Hua   

  1. State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou 310027, P. R. China
  • Received:2011-05-10 Revised:2011-06-20 Published:2011-08-26
  • Contact: LU Sheng-Yong
  • Supported by:

    The project was supported by the National Key Basic Research Program of China (2011CB201500), National Key Technology Research and Development Program of China (2007BAC27B04-4) and NationalWater Pollution Control and Management Technology Major Projects, China (2009ZX07317-003).

Abstract: Using commercially available activated carbon (AC) as a carrier, photocatalysts of activated carbon-supported TiO2 (TiO2/AC) with different specific surface areas and TiO2 loading contents were prepared by the sol-gel method. Nitrogen adsorption, X-ray diffraction (XRD), and scanning electron microscopy (SEM) were used to obtain the performance parameters of the TiO2/AC catalysts. The photocatalytic performance of the TiO2/AC catalysts was studied by using gaseous 1,2-dichlorobenzene. The influence of catalyst dose, specific surface area, and gaseous 1,2-dichlorobenzene concentration on this photodegradation was investigated. The results show that a nano-TiO2 deposit was formed with a particle size of approximately 10 nm. The loading of TiO2 onto the AC with a large specific surface area enhanced the photocatalytic activity of TiO2 photocatalysis with regard to the degradation of gaseous 1,2- dichlorobenzene. We show that TiO2/AC catalysts have a synergetic effect on AC adsorption and TiO2 photocatalysis during the degradation of gaseous 1,2-dichlorobenzene by comparing the photocatalytic performance of a commercial P25 catalyst and TiO2/AC catalysts.

Key words: Supported TiO2, Activated carbon support, Specific surface area, Photocatalyst, Gaseous 1,2-dichlorobenzene