(1. 常州大學 機械與能源學院，常州 213016
2. 常州大學 材料科學與工程學院，常州 213164)
摘 要: 以聚苯乙烯微球為模板、六水硝酸亞鈰為鈰源、六亞甲基四胺為沉淀劑，制備不同殼厚的氧化鈰空心微球；利用XRD、TEM、FESEM、XPS和氮氣吸附−脫附等手段，對所制備樣品的微觀結(jié)構(gòu)進行表征。將所制備的CeO2空心微球用于甲基橙模擬染料廢水的脫色處理。結(jié)果表明：CeO2空心微球具有多孔結(jié)構(gòu)，表面平均孔徑約為10 nm，球徑約為200~250 nm，殼厚約為10~30 nm，殼層是由粒徑為5~10 nm的CeO2顆粒所組成；甲基橙溶液經(jīng)CeO2空心微球處理60 min后，其脫色率可達95%以上，表現(xiàn)出良好的脫色性能。
關(guān)鍵字: 氧化鈰；空心微球；合成；脫色性能
（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 methyl orange dye waster water treated by ceria hollow microspheres for 60 min can reach above 95%. This indicates that these porous ceria hollow materials have good decolorizing performance.
Key words: ceria; hollow microspheres; synthesis; decolorizing performance
