全文下载：2012020115
张萧丹， 王永， 马继， 陈克正*
（青岛科技大学 材料科学与工程学院，山东 青岛 266042）
摘要： 采用可控的一步水热法制备出了具有对称棱边的梭形Fe5(PO4)4(OH)3·2H2O产物。利用X-射线衍射、场发射扫描电子显微镜、透射电子显微镜等手段对产物进行了表征，发现产物的生长机理符合Ostwald熟化过程。研究表明：在180 ℃下反应96 h后会得到多臂形貌的纯相Fe5(PO4)4(OH)3·2H2O产物，且在低温下更容易获得纯相的Fe5(PO4)4(OH)3·2H2O梭形产物。此外研究发现，产物在500 ℃热处理后具有较好的形貌和尺寸上的热稳定性。
关键词： Fe5(PO4)4(OH)3·2H2O； 梭形； 水热法； Ostwald熟化
中图分类号： TB 321文献标志码: A
Fabrication and Formation Mechanism of Fusiform Fe5(PO4)4(OH)3·2H2O
via One-step Hydrothermal ProcedureZHANG Xiao-dan， WANG Yong， MA Ji， CHEN Ke-zheng
(CollegeofMaterials Scienceand Engineering,QingdaoUniversityof Science and Technology,Qingdao266042,China)
Abstract: Novel fusiform Fe5(PO4)4(OH)3·2H2O were prepared, for the first time to our best knowledge, via facile and controllable one-step hydrothermal procedure. The formation mechanism is found to agree with Ostwald ripening process in accordance with the investigations carried out by X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. The results demonstrate that by prolonging the reaction time to 96 h at 180 ℃, Fe5(PO4)4(OH)3·2H2O pure phase with multi-arm morphology forms and Fe5(PO4)4(OH)3·2H2O pure phase is favored in low-temperature reaction process. Besides, it has been demonstrated that the as-synthesized products have a good thermal stability of morphology and size after thermal treatment at 500 ℃.
Key words: Fe5(PO4)4(OH)3·2H2O； fusiform； hydrothermal procedure； Ostwald ripening
收稿日期：2011-09-07
作者简介： 张萧丹（1988—），女，硕士研究生.*通信联系人.
