LIU Langa ， WANG Penga ， ZHOU Xingchena ，WEN Lixionga ， CHEN Jianfenga， b
（a. State Key Laboratory of Organic-Inorganic Composites； b. Research Center of the Ministry of Education for High Gravity Engineering and Technology， Beijing University of Chemical Technology，
Abstract：FePO4.2H2O was prepared by air oxidation method with FeSO4 as the iron source and H3PO4 as phosphorus sources.Ultrafine particles of FePO4 crystal without water were obtained by further heat treatment in air atmosphere.Synthetic products were characterized by XRD,SEM and elemental analysis.The results show that pure FePO4.2H2O can be obtained at the reacting temperature of 80 ℃ and the amount of substance ratio of iron and phosphorus is 1∶ 2 in raw materials.By calcining FePO4.2H2O at 520 ℃,FePO4can be obtained.There are impurities in products at other conditions.Significant decrease in particle size and aggregation are observed by adding polyethylene glycol which help the production of spherical powders disperse uniformly.
Keywords：ultrafine particles;iron phosphate;air oxidation
文章编号：1008-5548（2013）02-0024-05
DOI：10.3969/j.issn.1008-5548.2013.02.006
收稿日期：2012-09-17，修回日期：2012-09-29。
基金项目：国家自然科学基金项目，编号 21121064，20990224。
第一作者简介：刘烺（1988—），女，硕士研究生，研究方向为纳米材料。电话：13810146437， E-mail: liulangbuct@126.com。
通信作者：文利雄（1970—），男，博士，教授，博士生导师，研究方向为反应工程与纳米材料。 电话：010-64443613， E-mail: wenlx@mail.buct.edu.cn。
