(1. 常州大学 机械与能源学院，常州 213016
2. 常州大学 材料科学与工程学院，常州 213164)
摘 要: 以聚苯乙烯微球为模板、六水硝酸亚铈为铈源、六亚甲基四胺为沉淀剂，制备不同壳厚的氧化铈空心微球；利用XRD、TEM、FESEM、XPS和氮气吸附−脱附等手段，对所制备样品的微观结构进行表征。将所制备的CeO2空心微球用于甲基橙模拟染料废水的脱色处理。结果表明：CeO2空心微球具有多孔结构，表面平均孔径约为10 nm，球径约为200~250 nm，壳厚约为10~30 nm，壳层是由粒径为5~10 nm的CeO2颗粒所组成；甲基橙溶液经CeO2空心微球处理60 min后，其脱色率可达95%以上，表现出良好的脱色性能。
关键字: 氧化铈；空心微球；合成；脱色性能
（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
