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无机材料学报

无机材料学报

• 研究论文 • 上一篇    

纳米CeO2/TiO2介孔复合体系的合成与表征

何文1; 张旭东1,2; 李鹏1; 贾兴涛1; 胡曰博1   

  1. 1. 山东轻工业学院材料系, 济南 250100; 2. 山东大学晶体材料国家重点实验室, 济南 250100
  • 收稿日期:2004-02-26 修回日期:2004-04-06 出版日期:2005-03-20 网络出版日期:2005-03-20

Synthesis and Characterization of Nano-CeO2/TiO2 Mesoporous Composites

HE Wen1; ZHANG Xu-Dong1,2; LI Peng1; JIA Xing-Tao1; HU Yue-Bo1   

  1. 1.Department of Materials; Shandong Institute of Light Industry; Jinan 250100; China; 2.State Key Lab of Crystal Materials; Shandong University; Jinan 250100, China
  • Received:2004-02-26 Revised:2004-04-06 Published:2005-03-20 Online:2005-03-20

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摘要： 采用结构导向-超临界流体干燥(SCFD)-浸泡沉淀法制备了CeO2／TiO2介孔组装 纳米复合粉体,通过TEM,XRD,BJH和BET等技术对获得的粉体进行了表征,并将其应用 于光催化降解3B艳红染料和干电流变体中.结果表明,将稀土粒子CeO2组装到介孔TiO2的 纳米孔道中形成的复合体系的光催化、光吸收和介电特性不同于纳米TiO2颗粒,表现出了明 显的增强效应.

关键词: 稀土纳米颗粒, 介孔TiO2, 复合体系, 增强效应

Abstract: Nano-CeO2/TiO2 mesoporous composites were prepared by a structural guide-supercri-tical
fluid drying(SCFD)-intrusive precipitation method．The obtained composites were characterized by useing TEM, XRD, BET and BJH etc. techniques, and the
composites were used in photocatalyzing and breaking down bright red 3B dye in water and in the waterfree electrorheological (ER) suspensions. The results
show that the photoelectricity properties of the composites formed by assembling nano-CeO2 in the pore space of mesoporous TiO2 are different from
nano-TiO2 particles in the anatase structure and have the obvious enhancement effect.

Key words: nanopaxticles of rare earth, mesoporous TiO2, composite, enhancement effect

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