硒纳米线的合成及表征  

Synthesis and characterization of Se nanowires

作　　者：赵渺[1] 易双萍[1] 王震虎[1] 

机构地区：[1]广东工业大学物理与光电工程学院,广东广州510006

出　　处：《功能材料》2011年第B02期54-57,共4页Journal of Functional Materials

基　　金：广东省自然科学基金资助项目(9151009001000052);广东省科技计划资助项目(2008B010600010)

摘　　要：采用对环境友好的绿色合成方法，在碱性条件下，利用氧化还原体系把高价硒还原成灰黑色的三方相硒。以蔗糖、葡聚糖为软模板和形态导向剂，制备出了尺寸均匀、形态不同的硒纳米线。并用xRD、SEM等分析手段对产物的形貌和结构进行了表征，并对它们的成线机理做了相应的分析和解释。结果表明，两种不同的糖对硒纳米线生长的影响不同，在蔗糖条件下生成的硒纳米线尺寸较小，直径在80～300nm，长度在大约6μm左右。而在葡聚糖条件下生成的纳米线直径在500nm以上，长度达到0．5cm。它们生成的硒纳米线均为三方相结构，并且结晶性能良好，其生长方向沿着三方向硒的[001]方向生长。This paper introduces a green environment-friendly approach used for the preparation of t-Se nanowires with Alkaline conditions,redox reaction has been used for the synthesis of gray black t-Se nanowires in redox system. Sucrose, dextran has been used for agent-oriented and software templates, preparation of a large number of selenium nanowires has been prepared with uniform size, different morphologies. The morphologies and structure were characterized using XRD,SEM. It was shown that two different kinds of sugar has different effects on the growth of selenium nanowires,Se nanowires is typically about 6μm long , 80-300nm in diameter in sucrose conditions. But Se nanowires is typically about 0. 5cm long , over 500nm in diameter in dextran conditions;it was also shown that the Se nanowires with high crystallinity were trigonal selenium and grown along [001] direction.

关 键 词：硒纳米线 蔗糖 葡聚糖 绿色合成法 

分 类 号：TB302[一般工业技术—材料科学与工程]