Chem. J. Chinese Universities ›› 2015, Vol. 36 ›› Issue (7): 1367.doi: 10.7503/cjcu20150051

• Physical Chemistry • Previous Articles     Next Articles

Preparation of Ag2O/TiO2 Nanowires Heterojunction and Their Photocatalytic Activity Under Visible-light Irradiation

WANG Wei1,*(), HE Jiaojie1, CUI Fuyi1,*(), WANG Ce2   

  1. 1. State Key Laboratory of Urban Water Resources and Environments(SKLUWRE),Harbin Institute of Technology, Harbin 150090, China
    2. Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, Changchun 130012, China
  • Received:2015-01-16 Online:2015-07-10 Published:2015-06-17
  • Contact: WANG Wei,CUI Fuyi E-mail:wangweirs@hit.edu.cn;cuifuyi@hit.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.21304024), the Open Fund of the State Key Laboratory of Urban Water Resource and Environment, China(Nos.2013DX03, 2013TS06), the Postdoctoral Science Fundation of China(Nos.2014T70324, LBH—Z12090) and the Fundamental Research Funds for the Central Universities, China(No.5710006113, HIT,BRETIII.201417)

Abstract:

In order to improve the activity of TiO2 based photocatalysts, Ag2O/TiO2 nanowire(Ag2O/TNWs) heterojunctions were prepared via a facile precipitation method. Scanning electron microscopy(SEM), transmission electron microscopy(TEM), X-ray diffraction(XRD), X-ray photoelectron spectroscopy(XPS) and the decolorization experiment of methyl orange(MO) in aqueous solution were employed to characterize the as-prepared samples. Compared to the particle-structured catalyst of Ag2O/P25 with the same loading ratio(mass ratio 1∶1), the Ag2O/TNWs heterojunction exhibited greatly enhanced photocatalytic activities under visible light irradiation, indicating the advantage of the one-dimensional structure of TNWs.

Key words: Titanium dioxide(TiO2), Visible-light photocatalysis, Silver oxide, Heterojunction

CLC Number: 

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