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《Journal of the Chinese Ceramic Society》 2012-03
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Effect of Zr–Al Co-Doping on Structure and Photocatalytic Performance of ZnO Photocatalyst

YU Changlin1,YANG Kai1,2,WU Qiong1,YU Jimmy C3,FAN Qizhe1,XU Yongzhang1(1.School of Metallurgy and Chemical Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,Jiangxi,China; 2.Fujian Provincial Key Laboratory of Photocatalysis,State Key Laboratory Breeding Base,Fuzhou University,Fuzhou 350002, China;3.Department of Chemistry,Chinese University of Hong Kong,Hong Kong,China)  
Zr-doped,Al-doped,and Zr–Al co-doped ZnO photocatalysts were prepared via a hydrothermal synthesis method and sub-sequent calcination treatment.The structure and spectral properties of the prepared photocatalysts were investigated.The photocata-lytic activity of the prepared catalysts was evaluated by the photocatalytic degradation of acid orangeⅡunder an ultraviolet light(λ = 254 nm) irradiation.The results show that the products prepared are a hexagonal wurtzite structure of ZnO.Compared to pure ZnO,the photocatalytic activity of Zr-doped,Al-doped,and Zr–Al co-doped ZnO photocatalyst samples had a greater improvement,and the photocatalytic performance of the Zr–Al co-doped ZnO was significantly better than that of Zr or Al-doped ZnO.The increased photocatalytic activity for the Zr–Al codoped ZnO sample could be attributed to that the Zr–Al co-doped ZnO photocatalyst had the more OH groups on the surface of doped sample than the pure ZnO.The co-doping could effectively suppress the recombination of photo-generated electron–hole pairs,thus favoring the improvement of photocatalytic activity and stability of ZnO.
【Fund】: 国家自然科学基金(21067004);; 江西省自然科学基金(2010-GZH0048);; 厦门大学固体表面物理化学国家重点实验室开放基金(200906)资助项目
【CateGory Index】: O643.36
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