水热法合成Bi_2Te_3一维纳米线的研究（英文）  

FABRICATION AND CHARACTERIZATION OF Bi_2Te_3 NANOWIRES BY A HYDROTHERMAL METHOD

作　　者：吴芳[1,2] 王伟[3] 

机构地区：[1]河南教育学院物理与电子工程学院,郑州450046 [2]郑州大学物理工程学院材料物理教育部重点实验室,郑州450052 [3]中州大学信息工程学院,郑州450044

出　　处：《低温物理学报》2015年第2期104-109,共6页Low Temperature Physical Letters

基　　金：Project supported by the Technology Development Program of Henan Province of China(Grant No.142102210043);Key Program of Science and Technology Research of Henan Educational Committee(Grant No.14A140017)~~

摘　　要：通过水热法以Na2TeO3为Te源和SDBS为表面活性剂在不同反应温度和反应时间下合成了半导体材料Bi2Te3的一维纳米线粉体.纳米线粉体通过XRD衍射仪分析物相,扫描电镜分析其表面形貌.分析结果表明反应温度和反应时间对Bi2Te3的纯度和表面形貌均有很大的影响.最佳的反应条件为反应温度150℃,反应时间为24小时.在此条件下制备的Bi2Te3纳米线的长度为500～1000nm左右,直径仅为30～50nm.同时也对不同形貌Bi2Te3晶体的成核和生长机理进行了研究.One-dimensional semiconductor materials Bi2Te3 nanowires were synthesized by hydrothermal method using Na2TeO3 as the Te precursor and sodium dodecyl benzene sulfonate（SDBS）as the surfactant at different reaction conditions.The products were characterized by XRD and SEM.The results indicate that reaction times and temperatures have significant effects on the morphology of Bi2Te3 nanopowders and the optimum condition is 150℃and 24 h,at which the size of nanowires is about 500～1000nm in length and 30～50nm in diameter.A possible nucleation and growth mechanism of the Bi2Te3 crystals with different morphologies is suggested.

关 键 词：Bi2Te3纳米线 水热法 不同形貌 

分 类 号：TB383.1[一般工业技术—材料科学与工程]