Bulletin of Materials Science

, Volume 36, Issue 3, pp 367–372

Facile synthesis of Au/ZnO nanoparticles and their enhanced photocatalytic activity for hydroxylation of benzene

Authors

  • HANG YU
    • Institute of Functional Nano and Soft Materials (FUNSOM) and Jiangsu Key Laboratory for Carbon-based Functional Materials and DevicesSoochow University
  • HAI MING
    • Institute of Functional Nano and Soft Materials (FUNSOM) and Jiangsu Key Laboratory for Carbon-based Functional Materials and DevicesSoochow University
  • JINGJING GONG
    • Institute of Functional Nano and Soft Materials (FUNSOM) and Jiangsu Key Laboratory for Carbon-based Functional Materials and DevicesSoochow University
  • HAITAO LI
    • Institute of Functional Nano and Soft Materials (FUNSOM) and Jiangsu Key Laboratory for Carbon-based Functional Materials and DevicesSoochow University
  • HUI HUANG
    • Institute of Functional Nano and Soft Materials (FUNSOM) and Jiangsu Key Laboratory for Carbon-based Functional Materials and DevicesSoochow University
  • KEMING PAN
    • Institute of Functional Nano and Soft Materials (FUNSOM) and Jiangsu Key Laboratory for Carbon-based Functional Materials and DevicesSoochow University
    • Institute of Functional Nano and Soft Materials (FUNSOM) and Jiangsu Key Laboratory for Carbon-based Functional Materials and DevicesSoochow University
  • ZHENHUI KANG
    • Institute of Functional Nano and Soft Materials (FUNSOM) and Jiangsu Key Laboratory for Carbon-based Functional Materials and DevicesSoochow University
  • JIE WEI
    • Department of Chemical and Biological EngineeringSuzhou University of Science and Technology
  • DONGTIAN WANG
    • Department of Chemical and Biological EngineeringSuzhou University of Science and Technology
Article

DOI: 10.1007/s12034-013-0491-y

Cite this article as:
YU, H., MING, H., GONG, J. et al. Bull Mater Sci (2013) 36: 367. doi:10.1007/s12034-013-0491-y

Abstract

Au/ZnO nanocomposites have been prepared by a simple chemical method. For the first time, the nanocomposites were directly used as photocatalysts for hydroxylation of aromatic hydrocarbons under UV and visible light irradiation. The results show that the as-prepared photocatalysts display high photocatalytic activity for UV and visible catalytic hydroxylation of benzene. Without the assistance of any solvent or additive, high selectivity and high conversion efficiency were still obtained. Different photocatalytic mechanisms were proposed depending on whether excitation happens on ZnO semiconductor or on the surface plasmon band of Au. The former is Au nanoparticles act as electron buffer due to irradiation by UV light and ZnO nanoparticles as reactive sites for hydroxylation of benzene, the latter is that Au nanoparticles act as light harvesters and inject electrons into ZnO conduction band and as photocatalytic sites under visible light irradiation.

Keywords

Zinc oxidegold nanoparticlesnanocompositesphotocatalysisvisible light

Copyright information

© Indian Academy of Sciences 2013