溶剂热结晶FeS_2及其光吸收特性  

Solvothermal Crystallization and Optical Absorption Behaviors of FeS_2

作　　者：张浩[1] 刘军[1] 王立秋[1] 李克艳[1] 薛冬峰[1] 刘长厚[1] 

机构地区：[1]大连理工大学化工学院材料化工系精细化工国家重点实验室,大连116012

出　　处：《人工晶体学报》2009年第1期79-82,共4页Journal of Synthetic Crystals

基　　金：教育部新世纪优秀人才支持计划项目(No.NCET-05-0278);国家自然科学基金资助项目(No.NSFC-50872016)

摘　　要：以硝酸铁和硫脲为原料、乙醇为溶剂,采用溶剂热法生长了二硫化铁(FeS2、黄铁矿型)微纳米结晶体。通过调节反应温度和原料浓度,有效地控制了FeS2微纳米晶体的微观生长形态。采用XRD和SEM等手段表征了FeS2结晶样品,结果表明溶剂热结晶的FeS2具有良好的立方晶型,随着反应温度、原料浓度的改变,溶剂热法生长的FeS2分别呈现光滑表面球晶、六方片状结晶和堆积状球晶等特殊的微观形态。对于溶剂热法生长FeS2,本文也从化学反应的角度给出了可能的形成机理,同时利用UV-vis光谱测定了FeS2结晶的光吸收性能。Micro/nano pyrite FeS2 were crystallized by a solvothermal process using Fe(NO3)3·9H2O and NH2CSNH2 as raw materials in ethanol solvent.The morphology of the as-prepared FeS2 was effectively controlled by varying the reaction temperature and concentration of raw materials.The typical prepared FeS2 was characterized by X-ray diffraction(XRD) and scanning electron microscopy(SEM).The results show that the FeS2 samples are in a typical cubic phase.As the temperature and concentration varying,the obtained FeS2 ...

关 键 词：溶剂热法 FeS2 微观生长形态 光吸收 

分 类 号：TB381[一般工业技术—材料科学与工程]