Biogenic synthesis and catalysis of porous CeO_2 hollow microspheres  

作　　者：陈丰 王炜 陈志刚 王太斌 

机构地区：[1]Department of Materials Science and Engineering,Jiangsu University [2]State Key laboratory of Crystal Material,Shandong University [3]Department of Chemistry and Bioengineering,Suzhou University of Science and technology [4]Jiangsu Key Laboratory for Environment Functional Materials,Suzhou University of Science and Technology

出　　处：《Journal of Rare Earths》2012年第4期350-354,共5页稀土学报（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (NSFC21071107);Natural Science Foundation of Jiangsu Province (BK2008541);Key Laboratory for Oil-gas Storage and Transportation Engineering of Jiangsu Province (CY0901);Creative Project of Postgraduate of Jiangsu Province (CX10B-256Z);Key Laboratory for Environmental Function Materials of Suzhou (SZS201008);Industrial Surport Project of Suzhou (SYG201029);Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions

摘　　要：Porous CeO2 hollow microspheres were successfully prepared through a facile process by using the rape pollen as the biotemplate. Scanning electron microscopy （SEM）, transmission electron microscopy （TEM）, the N2 adsorption and desorption, X-ray diffraction （XRD）, UV-vis diffuse reflectance spectra, and hydrogen temperature-programmed reduction （H2-TPR） were used for their characterization. The results showed that the obtained materials exhibited the same morphology as that of the pollen template, with a diameter of ca. 10 μm, and the surface was evenly covered with a special network-like structutre with mesh size of about 0.3 μm, and the Brunauer-Emmett-Teller （BET） surface area was measured to be 156 m2/g. The detailed property investigation inferred that the product exhibited better photocatalytic activity in acid fuchsine decolorization under daylight because of higher surface area, smaller crystallite size and higher oxygen capacity.Porous CeO2 hollow microspheres were successfully prepared through a facile process by using the rape pollen as the biotemplate. Scanning electron microscopy （SEM）, transmission electron microscopy （TEM）, the N2 adsorption and desorption, X-ray diffraction （XRD）, UV-vis diffuse reflectance spectra, and hydrogen temperature-programmed reduction （H2-TPR） were used for their characterization. The results showed that the obtained materials exhibited the same morphology as that of the pollen template, with a diameter of ca. 10 μm, and the surface was evenly covered with a special network-like structutre with mesh size of about 0.3 μm, and the Brunauer-Emmett-Teller （BET） surface area was measured to be 156 m2/g. The detailed property investigation inferred that the product exhibited better photocatalytic activity in acid fuchsine decolorization under daylight because of higher surface area, smaller crystallite size and higher oxygen capacity.

关 键 词：BIOTEMPLATE POROUS CEO2 MICROSPHERES PHOTOCATALYSIS rare earths 

分 类 号：O614.332[理学—无机化学]