多孔氧化铈空心微球的合成、表征及其脱色性能 - 中国有色金属学报.pdf

多孔氧化铈空心微球的合成、表征及其脱色性能 - 中国有色金属学报.pdf

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多孔氧化铈空心微球的合成、表征及其脱色性能 - 中国有色金属学报

21 4 2011 4 Vol.21 No.4 The Chinese Journal of Nonferrous Metals Apr. 2011 1004-0609(2011)04-0810-05 1 2 2 (1. 213016 2. 213164) XRDTEMFESEMXPS − CeO2 CeO2 10 nm200~250 nm10~30 nm5~10 nm CeO2 CeO2 60 min 95% O611. 4 A Synthesis, characterization and decolorizing performance of porous ceria hollow microspheres 1 1 2 CHEN Ai-lian , LONG Ren-wei , LU Jin-xia (1. School of Mechanical and Energy Engineering, Changzhou University, Changzhou 213016, China; 2. School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China) Abstract: The porous ceria hollow microspheres with controlled shell thickness were synthesized by a simple polystyrene sphere template method using cerium nitrate as cerium resource, hexamethylenetetramine as precipitating agent. The microstructure and properties of the as-synthesized samples were characterized by XRD, TEM, FESEM, XPS and N2 adsorption-desorption. The decolorizing performance of the ceria hollow microspheres on methyl orange dye waster water was also investigated. The results indicate that the ceria hollow microspheres have porous structure with average pore diameter of 10 nm, sphere diameter of 200−250 nm and shell thickness of 10−30 nm, and the cell composes of CeO2 sphere with diameter of 5−10 nm. The decolorizing rate of

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