葡萄糖辅助合成碲化铅纳米棒及其表征

doi:10.11944/j.issn.1000-0518.2016.05.150417

摘要/Abstract

摘要：

采用简单的葡萄糖辅助溶剂热合成法制备了碲化铅纳米棒。利用X射线衍射(XRD)、场发射扫描电子显微镜(FE-SEM)、透射电子显微镜(TEM)、高分辨率透射电子显微镜(HRTEM)、能谱仪(EDS)等技术手段进行材料结构和形貌表征。结果表明,产物是纯的立方相PbTe,纳米棒的直径约为50 nm,长500 nm左右。研究了反应过程的影响因素及碲化铅纳米棒的形成机制。产物的形貌受葡萄糖的量、反应时间、反应温度和聚乙烯吡咯烷酮(PVP)质量的控制,分析了形成这种结构的原因。

关键词: 碲化铅纳米棒, 葡萄糖, 溶剂热合成, 生长机理

Abstract:

Lead telluride nanorods were successfully synthesized by a simple glucose-assisted solvothermal method. The structure characteristics of these as-prepared samples were studied by X-ray diffraction pattern(XRD), field emission scanning electron microscopy(FESEM), transmission electron microscopy(TEM), high resolution transmission electron microscopy(HRTEM) and energy dispersive spectrometer(EDS). The results show that the products are PbTe with a cubic structure. The diameter and length of PbTe nanorods obtained are 50 and 500 nm, respectively. Some reaction factors influencing the formation of PbTe nanorods were systematically investigated. The morphology of the obtained products can be controlled by changing the amount of glucose, the reaction time, the reaction temperature and the amount of polyvinyl pyrrolidone(PVP). The mechanism for the formation of PbTe nanorods is discussed.

Key words: lead telluride nanorods, glucose, solvothermal synthesis, growth mechanism

李尔沙, 陈斌, 冯鹏元, 邓瑞平, 彭泽平. 葡萄糖辅助合成碲化铅纳米棒及其表征[J]. 应用化学, 2016, 33(5): 591-598.

LI Ersha, CHEN Bin, FENG Pengyuan, DENG Ruiping, PENG Zeping. Glucose-Assisted Synthesis and Characterization of Lead Telluride Nanorods[J]. Chinese Journal of Applied Chemistry, 2016, 33(5): 591-598.

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