Preparation and Photocatalysis of Nano-Zn/Ce Composite Oxides
Xiuping Li A B C , Yuchun Zhai A C , Peihua Ma A and Rongxiang Zhao BA School of Materials and Metallurgy, Northeastern University, Shenyang Liaoning 110004, China.
B College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University 113001, China.
C Corresponding authors. Email: lilili_171717@126.com; zhaiyc@smm.neu.edu.cn
Australian Journal of Chemistry 67(4) 657-662 https://doi.org/10.1071/CH13448
Submitted: 23 June 2013 Accepted: 30 November 2013 Published: 3 February 2014
Abstract
Metal oxide photocatalysts often lead to partial or complete mineralization of organic pollutants. On irradiation with UV-visible light, metal oxides catalyze redox reactions in the presence of air and O2 and water. Using ascorbic acid as a new combustion agent, ZnO was rapidly synthesized. Nano-Zn/CeO2 composites were prepared by a heterogeneous-precipitation method using (NH4)2CO3 as precipitation agent. X-ray diffraction, field-emission scanning electron microscopy, transmission electron microscopy, Fourier-transform infrared spectrometry, ultraviolet spectrophotometry, and differential thermal analysis were used to analyse the microstructures of the synthesized materials. Differential thermal analysis, transmission electron microscopy, and X-ray diffraction analyses indicated that ZnO was coated by CeO2. Herein, a nano-Zn/Ce composite was explored as a catalyst for Rhodamine B photodegradation with a 125-W lamp as the UV radiation source in a batch reactor. The results show the photocatalytic properties of the nano-Zn/Ce composite were superior to ZnO, CeO2, and nano-Ce/Zn composites.
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