FeS_2微粉的水热合成及晶体结构研究  

Preparation of Pyrite Powder by Hydrothermal Process

作　　者：吴荣[1] 郑毓峰[1] 张校刚[2] 孙言飞[1] 徐金宝[1] 姜海涛[1] 

机构地区：[1]新疆大学物理系,乌鲁木齐830046 [2]新疆大学化学与化工学院

出　　处：《新疆大学学报（自然科学版）》2005年第2期134-138,共5页Journal of Xinjiang University(Natural Science Edition)

基　　金：国家自然科学基金 (5 0 0 62 0 0 2 )资助项目

摘　　要：利用水热法一步合成了黄铁矿型Fe S2 (Pyrite)多晶粉体.样品的X射线衍射线和Rietvild结构精修表明,所得样品具有AB2 型立方结构,空间群Pa3,晶格常数a=5 .41 5 1 ,Wyckoff参量u=0 .3 868,结合水热生长模式分析了晶体的生长过程.A single stage with low temperature hydrothermal synthesis route has been successfully developed for the preparation of pyrite FeS_2 powder.The XRD and Rietveld structure refinement indicate that the sample structure is a typical AB_2 cubic of space group Pa_3 with a lattice constant a=5.4151 and a Wyckoff parameter (u=0.3868.)SEM shows that the polycrystalline pyrite is well crystallized.A possible mechanism for the hydrothermal formation of the pyrite is discussed.

关 键 词：FeS2(Pyrite) 水热法 RIETVELD方法 

分 类 号：O484[理学—固体物理]