Imaging Science and Photochemistry ›› 2015, Vol. 33 ›› Issue (2): 108-116.DOI: 10.7517/j.issn.1674-0475.2015.02.108

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Fabrication and Visible Light Photocatalytic Study of AgNPs/PEDOT Decorated Si Nanowires Array

DUAN Chunyang, WANG Hui, LI Fan, ZHANG Xiaohong   

  1. Nano-organic Photoelectronic Laboratory, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R. China
  • Received:2014-05-05 Revised:2014-05-16 Online:2015-03-15 Published:2015-03-15


Silicon nanowires array has been considered as a promising photocatalyst for large-scale application due to their enhanced photo-absorption ability and silicon's abundance. However, Si is indirect semiconductor and susceptible to photocorrosion in aqueous solution, which hinders it from photocatalytic application. In the present work, we construct a stable photocatalyst based on robust polymer and plasmonic metal nanoparticles decorated SiNWs array and investigated the influential factors of the decoration constituents on the SiNWs' surfaces through an organic dyestuff photocatalytic decomposition process. With the elaborate analysis of decomposition results' variation caused by the difference of the semiconductor's decoration and scavenger agent, the thickness of the cover layer and the plasmonic metal nanoparticles loading are shown to be influence the photocatalytic ability essentially.

Key words: silicon nanowires array, plasmonic AgNPs, PEDOT, visible light photocatalysis