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Journal of Nanomaterials
Volume 2013 (2013), Article ID 372951, 5 pages
http://dx.doi.org/10.1155/2013/372951
Research Article

Synthesis, Characterization, and Photocatalysis of ZnO and Er-Doped ZnO

1School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
2Guangdong Province Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, China
3School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, China

Received 30 March 2013; Accepted 8 July 2013

Academic Editor: Xuedong Bai

Copyright © 2013 Kai-sheng Yu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

ZnO and Er-doped ZnO with different molar ratios of Er/Zn were prepared using the homogeneous precipitation method. The photocatalysts prepared were characterized using scanning electron microscopy, transmission electron microscopy, X-ray diffraction (XRD), UV-vis spectroscopy, and photoluminescence spectroscopy. The results showed that the Er-doped ZnO displayed characteristic wurtzite-type peaks in the XRD spectra. The Er-doped ZnO absorbed much more light than ZnO in the ultraviolet region. And the doping of Er into ZnO enhanced the intensity of the fluorescence emission. The degradation of methylene blue (MB) solution demonstrated that the photocatalytic activity of ZnO was significantly improved with Er doping.