人工晶体学报2012，Vol.41Issue(3)：647-651,5.
水热法制备FeWO4微晶及其结晶动力学研究
Preparation and Kinetics Research on FeWO4 Crystailites Prepared by Hydrothermal Process
摘要
Abstract
FeWO4 nanocrystallites were prepared by a hydrothermal process using (NH4)2Fe(SO4)2 ? 6H2O and Na2WO4?2H2O as raw materials. The phase composition and microstructures of the as-prepared nanocrystalline were characterized by X-ray diffraction ( XRD) and transmission electron microscopy analysis (TEM). The results show that monophase FeWO4 nanocrystallites were obtained at 110℃ for 24 h. As the hydrothermal time and temperature increasing,the improvement in crystallization and increase in average particle size were detected. Correspondingly, the monophase of the crystallites transform from needle-like to grain-like structure. The growth kinetics of the FeWO4 crystallites follows the Brook's theory, and the corresponding growth activation energy of FeWO4 nanocrystallites is calculated to be 17.36 kJ/mol.关键词
水热法/FeWO4/动力学/活化能Key words
hydrothermal method/ FeWO4/ kinetics/ activation energy分类
数理科学引用本文复制引用
余芳,曹丽云,黄剑锋,吴建鹏..水热法制备FeWO4微晶及其结晶动力学研究[J].人工晶体学报,2012,41(3):647-651,5.基金项目
国家自然科学基金(50962047) （50962047）
陕西省教育厅自然科学专项基金(2010JK444) （2010JK444）
陕西省教育厅自然科学专项项目(11JK0820) （11JK0820）
陕西省教育厅自然科学专项基金(09JK361) （09JK361）
陕西科技大学研究生创新基金资助项目 （）
