空心玻璃微珠/TiO_2复合微球的制备及其性能研究  

Synthesis and Properties of Hollow Glass Spheres/TiO_2 Composite

作　　者：袁静[1,2] 安振国[1] 张敬杰[1] 李冰[1] 

机构地区：[1]中国科学院理化技术研究所,北京100190 [2]中国科学院研究生院,北京100049

出　　处：《影像科学与光化学》2012年第6期447-455,共9页Imaging Science and Photochemistry

基　　金：国家自然科学基金(50901083;51102248);中国科学院知识创新工程青年人才领域前沿项目资助(TYF0901)

摘　　要：本文以脲为沉淀剂,通过化学沉淀法成功实现了锐钛矿型二氧化钛壳层在空心玻璃微珠表面的可控组装,从而制备出玻璃/二氧化钛核壳空心微球,并通过XRD、SEM、EDX和拉曼光谱对其结构、形貌、粒径、壳厚和化学组成进行了表征.提出了二氧化钛在空心玻璃微珠表面的定向生长的可能机制和形成过程.Anatase TiO2 shells deposited on hollow glass microspheres with tunable morpholo- gies were successfully prepared through a controllable chemical precipitation method with urea as the precipitator, and thus glass/TiO2 core/shell composite hollow microspheres were fabri- cated. The phase structure, morphology, particle size, shell thickness, and the chemical com- positions, of the composite microspheres were characterized by X-ray diffraction, scanning e- lectron microscopy, energy dispersive X-ray spectrum and Raman spectra. The probable growth mechanism of the TiO2 shells and the formation process of the core/shell composite mi- crospheres were proposed.

关 键 词：空心玻璃微珠 TIO2 核 壳 脲 

分 类 号：TB332[一般工业技术—材料科学与工程]