标题：
Preparation and characterization of the TiO2 ultrafine particles by detonation method
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论文类型：
期刊论文
发表刊物：
MATERIALS RESEARCH BULLETIN
收录刊物：
SCIE、EI
卷号：
43
期号：
1
页面范围：
97-103
ISSN号：
0025-5408
关键字：
oxides; nanostructures; crystal growth; high pressure; X-ray diffraction
摘要：
Utilizing the raw materials of TiOSO4, NaOH, NH4NO3 and RDX, the TiO2 ultrafine particles were prepared under high pressure and high temperature by detonation method. The structure, composition and size distribution of the TiO2 ultrafine particles were systematically characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results indicated the as-prepared TiO2 ultrafine particles exhibited spherical-like grains and that the average size of particles was 25 +/- 5 nm. After being heated at 700 degrees C for 1 h, TiO2 particles have entirely completed the anatase-rutile phase transition, which means that detonation method can effectively enhance the anatase-rutile phase transition by lowering the transition temperature. The size of TiO2 nanoparticles can be effectively controlled because the as-prepared nanoparticles do not have enough time to grow to large and perfect crystallites during the detonation process. (c) 2007 Elsevier Ltd. All rights reserved.
发表时间：
2008-01-08
学位：博士
职称：研究员
学科：工程力学. 应用与实验力学. 生物与纳米力学
所在单位：力学与航空航天学院