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材料研究学报  2010, Vol. 24 Issue (3): 315-321    
  研究论文 本期目录 | 过刊浏览 |
可控壳厚纳米CeO2中空球的制备、表征及其催化氧化性能
陈杨1, 隆仁伟1, 陈志刚2, 陆锦霞1
1.常州大学材料科学与工程学院 常州 213164
2.苏州科技学院化学与生物工程学院 苏州 215011
Preparation, Characterization and Catalytic Oxidation Performance of CeO2 Hollow Microspheres with Controlled Shell Thickness
CHEN Yang1, LONG Renwei1, CHEN Zhigang2,  LU Jinxia1
1.School of Material and Science Engineering, Changzhou University, Changzhou 213164
2.Department of Chemistry and Bioengineering, Suzhou University of Science and Technology, Suzhou 215011
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): 315-321.
. Preparation, Characterization and Catalytic Oxidation Performance of CeO2 Hollow Microspheres with Controlled Shell Thickness[J]. Chin J Mater Res, 2010, 24(3): 315-321.

全文: PDF(1185 KB)  
摘要: 

以聚苯乙烯微球为模板制备PS/CeO2复合颗粒, 再通过煅烧去除PS内核形成CeO2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, CeO2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CeO2颗粒紧密堆积所组成。经CeO2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。

关键词 CeO2中空球壳厚模板法降解率    
Abstract

CeO2 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 CeO2 hollow microspheres on phenol was investigated. The results indicate that the CeO2 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 CeO2 nanoparticles (particle diameter of 5–10 nm). The shell thickness of CeO2 hollow microspheres can be controlled from 15 to 30 nm by adjusting the concentration of Ce(NO3)3·6H2O in the reaction solution. The degradation rate of CeO2 hollow microspheres can reach to 95% for the phenol.

Key wordsCeO2 hollow microspheres    shell thickness    template method    degradation rate
收稿日期: 2009-11-19     
基金资助:

江苏省工业支撑计划项目BE2008037和常州市工业科技攻关项目CE2007068, CE2008083资助项目。

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