| 可控壳厚纳米CeO2中空球的制备、表征及其催化氧化性能 |
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| 引用本文： | 陈杨,隆仁伟,陈志刚,陆锦霞. 可控壳厚纳米CeO2中空球的制备、表征及其催化氧化性能[J]. 材料研究学报, 2010, 24(3) |
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| 作者姓名： | 陈杨 隆仁伟 陈志刚 陆锦霞 |
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| 作者单位： | 常州大学材料科学与工程学院,常州,213164;苏州科技学院化学与生物工程学院,苏州,215011 |
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| 基金项目： | 江苏省工业支撑计划项目BE2008037; 常州市工业科技攻关项目CE2007068,CE2008083资助项目~~ |
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| 摘 要： | 以聚苯乙烯微球为模板制备PS/CeO_2复合颗粒,再通过煅烧去除PS内核形成CeO_2纳米中空球,并通过控制反应液中硝酸铈的浓度来最终控制中空球的壳厚。用TEM、FESEM、SAED、FTIR、DLS等手段,对所制备样品的物相结构、形貌和粒径分布进行了表征。结果表明,CeO_2中空球内径约为200 nm,外径约为230-260 nm,壳厚分别约为15、20、25和30 nm,中空球壳层由大量粒径为5-10 nm的纳米CeO_2颗粒紧密堆积所组成。经CeO_2中空球催化臭氧氧化处理2 h后,对苯酚的降解率可达95%以上。
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| 关 键 词： | 复合材料 CeO2中空球 壳厚 模板法 降解率 |
Preparation,Characterization and Catalytic Oxidation Performance of CeO_2 Hollow Microspheres with Controlled Shell Thickness |
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| CHEN Yang LONG Renwei CHEN Zhigang LU Jinxia .School of Material , Science Engineering,Changzhou University,Changzhou. Preparation,Characterization and Catalytic Oxidation Performance of CeO_2 Hollow Microspheres with Controlled Shell Thickness[J]. Chinese Journal of Materials Research, 2010, 24(3) |
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| Authors: | CHEN Yang LONG Renwei CHEN Zhigang LU Jinxia .School of Material Science Engineering Changzhou University Changzhou |
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| Affiliation: | CHEN Yang~1 LONG Renwei~1 CHEN Zhigang~(2**) LU Jinxia~1 1.School of Material , Science Engineering,Changzhou University,Changzhou 213164 2.Department of Chemistry , Bioengineering,Suzhou University of Science , Technology,Suzhou 215011 |
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| Abstract: | CeO_2 hollow microspheres with controlled shell thickness were synthesized via a simple polystyrene sphere template method.The as-synthesized products were characterized by TEM,FESEM, SAED,FTIR and DLS.The degradating performance of the CeO_2 hollow microspheres on phenol was investigated.The results indicate that the CeO_2 hollow microspheres with the external diameter approximately of 230-260 nm and the internal diameter of 200 nm possess thin shell composed of loosely packed CeO_2 nanoparticles(particle ... |
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| Keywords: | composites CeO_2 hollow microspheres shell thickness template method degradation rate |
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