PREPARATION AND CHARACTERIZATION OF WO3 NANOCRYSTALLINE BY SELECTED-DISSOLVING OF WO3/SIO2 COMPOSITES

摘要：

WO3/SiO2 was first synthesized by incorporating silicotungstic acid into amorphous SiO2 substrate via impregnation-sintering method.The nanocrystalline tungsten trioxide (WO3) particles were achieved through selected-dissolving as-prepared WO3/SiO2 composites fn dilute fluoric acid solution.The crystallizing formation procedure of WO3 was monitored by BET and thermogravimetric-differential thermal analysis (TG-TGA),respectively.The resultant WO3 products were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM).The results indicated the obtained particles belonged to the high pure orthorhombic phase,and possessed a small particle diameter and a narrow particle size distribution.

关键词： Nanometer Tungsten trioxide Silicotungstic acid Selected-dissolving

作者: Z.H.Chen J.H.Xu

作者单位: Institute of Environmental Science and Engineering,Changan University,Xian 710054,China School of Science,Xian Institute of Post and Telecommunication,Xian,China,Xian 710061,China

会议类型: 国际会议

会议名称: The Third International Conference on Heterogeneous Material Mechanics(第三届国际非均匀材料力学会议)

会议地点: 上海

会议语种:英文

页码: 651-654

在线出版日期: 2011-05-22（万方平台首次上网日期，不代表论文的发表时间）