复合溶剂热法合成Bi2S3纳米棒的研究  

Research on Synthesizing Bi_2S_3 Nanorods by Complex Solvothermal Process

作　　者：袁新松[1] 郝建文[2] 朱金苗[1] 周阿洋[3] 周涛[3] 

机构地区：[1]合肥师范学院化学化工系,安徽合肥230061 [2]安徽职业技术学院化学工程系,安徽合肥230051 [3]合肥工业大学化学工程学院,可控化学与材料化工安徽省重点实验室,安徽合肥230009

出　　处：《稀有金属与硬质合金》2009年第3期5-7,28,共4页Rare Metals and Cemented Carbides

基　　金：安徽省教育厅自然科学基金资助项目(KJ2009B112)

摘　　要：以铜试剂（二乙基二硫代氨基甲酸钠）为硫源、硝酸铋为铋源、丙三醇-水体系为溶剂，采用复合溶剂热法大规模合成了Bi2S3纳米棒。对所制备的样品用X射线粉末衍射（XRD）、透射电子显微镜（TEM）、场发射扫描电子显微镜（FESEM）等测试手段进行了表征。结果表明，所制备样品为纯相正交晶型，其形貌为分散性良好的单晶纳米棒，径向和轴向尺寸分别为30-50nm和几微米。对Bi2S3纳米棒的形成机理进行了探讨，认为丙三醇-水复合溶剂及表面活性剂PVP对其形貌和尺寸均有重要影响。Large-scale Bi2S3 nanorods were synthesized by the complex solvothermal process using copper reagent （sodium diethyldithiocarbamate） as sulfur source,bismuth nitrate as bismuth source,and glycerolwater system as solvent. The product was investigated by X-ray powder diffraction （XRD）,transmission electron microscopy （TEM）,field emission scanning electron microscopy （FESEM） and so on. The results show that the prepared sample is purely of orthorhombic crystal phase. The well-dispersed single-crystal nanorods are obtained, having the lateral sizes of 30-50 nm and the axial sizes of several microns. The formation mechanism of Bi2S3 nanorods is also discussed. It is concluded that both the complex solvent of glycerol-water and the surfactant of PVP have important influences on the morphology and size of Bi2 S3 single -crystal nanorods.

关 键 词：复合溶剂热法 BI2S3 纳米棒 丙三醇-水 PVP 

分 类 号：TB383[一般工业技术—材料科学与工程]