Chemical Research in Chinese Universities ›› 2013, Vol. 29 ›› Issue (6): 1032-1035.doi: 10.1007/s40242-013-3354-6

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Fabrication and Visible Light Photocatalytic Activity of Co-doped ZnO Nanorods

LI Xue1,2, LI Jin-hua2, LI Shi-jun1, FANG Xuan2, FANG Fang2, CHU Xue-ying2, WANG Xiao-hua2, HU Jia-xin2   

  1. 1. College of Information Technology, Jilin Agriculture University, Changchun 130118, P. R. China;
    2. School of Science, Changchun University of Science and Technology, Changchun 130022, P. R. China
  • Received:2013-08-21 Revised:2013-10-30 Online:2013-12-01 Published:2013-11-05
  • Contact: LI Xue E-mail:lixuesnow999@126.com
  • Supported by:

    Supported by the National Natural Science Foundation of China(No.61006065), the Natural Science Foundation of Jilin Province, China (No.20101546), the Foundation of Department of Education of Jilin Province, China(No.2011JYT05), the Project of Science and Technology of Jilin Province, China(No.20121816) and the Scientific Research Foundation of Jilin Agricultural University, China(No.201238).

Abstract:

Co-doped ZnO nanorods were prepared by electrochemical deposition method in aqueous solution. To study the as-grown samples, several characterizations were carried out. The scanning electron microscopy(SEM) images show that the samples present a rod-like shape with hexagonal cross sections and roughened surface. There is a slight shift for (002) diffraction peak of Co-doped ZnO nanorods in XRD because Co2+ ions entered into the ZnO lattice. Energy-dispersive X-ray spectroscopy(EDS) and X-ray photoelectron spectroscopy(XPS) results also show the exist of Co in the sample. Photoluminescence(PL) spectra of the samples were observed at room temperature, the UV emission of Co-doped ZnO shows a slight red shift compared with that of undoped ZnO. Thus, we can reach the conclusion that Zn2+ ions have been substituted by Co2+ ions in the ZnO samples. In addition, photocatalysis property of Co-doped ZnO nanorods was investigated under the irradiation of visible light. It was found that the degradation rate of methyl orange is increased greatly by Co-doped ZnO nanorods in comparison to undoped ZnO nanorods.

Key words: Co-doped ZnO, Nanorod, Electrochemical deposition, Visible light, Photocatalysis