Chinese Journal of Catalysis ›› 2017, Vol. 38 ›› Issue (3): 440-446.DOI: 10.1016/S1872-2067(17)62757-8

• Special Column on New Porous Catalytic Materials • Previous Articles     Next Articles

Photocatalytic aerobic oxidation of toluene and its derivatives to aldehydes on Pd/Bi2WO6

Bo Yuana,b, Bao Zhanga,b, Zhiliang Wanga,b, Shengmei Lua, Jun Lia, Yan Liua, Can Lia   

  1. a State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China;
    b University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2016-10-27 Revised:2016-11-20 Online:2017-03-18 Published:2017-03-22
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (21322202, 21472187) and the National Basic Research Program of China (2010CB833300).

Abstract:

The selective oxidation of toluene and its derivatives is extremely important in the chemical industry.The use of photocatalysis in organic synthesis has attracted considerable attention among synthetic chemists because of its “green” environmental characteristics. In this study, nanoscale Bi2WO6 with a flower-like morphology was found to be a highly efficient photocatalyst in the catalytic oxidation of toluene and its derivatives using O2 as the oxidant. The loading of Pd nanoparticles as a cocatalyst onto the flower-like Bi2WO6 was found to produce a significant enhancement in the catalytic activity. Mechanistic investigation showed that the superior performance of Pd/Bi2WO6 could be attributed to the improvement of both the reductive and oxidative abilities of Bi2WO6 by the loading of the cocatalyst.

Key words: Flower-like Bi2WO6, Toluene oxidation, Benzaldehyde, Cocatalyst, Palladium nanoparticle