Liu Xiaoyan, Chen Feihu, Jin Yong, Qian Yitai
College of Pharmacy, Anhui Medical University, 81 Meishan Road, Hefei 230032 Anhui, People's Republic of China.
J Nanosci Nanotechnol. 2013 Jan;13(1):388-93. doi: 10.1166/jnn.2013.6863.
A hydrothermal route has been developed to synthesize lead telluride (PbTe) nanostructures through the reaction between Pb(CH3COO)2 and Na2TeO3. When the surfactant poly(vinyl pyrrolidone) (PVP) was introduced into the solution, uniform PbTe nanorods with a diameter of about 30 nm could be prepared, while absent of PVP, PbTe nanotubes could be synthesized. Furthermore, some interesting Y-, V-, crisscross-shaped PbTe nanotubes were reported for the first time. The resulting materials were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and high-resolution TEM (HRTEM). Two different mechanisms are identified to explain the formation of the nanorods and nanotubes herein. A surfactant-assisted oriental attachment mechanism is explained to describe the formation of PbTe nanorods, whereas, we deduce PbTe nanotubes follow a self-generated template route.
已开发出一种水热法，通过醋酸铅（Pb(CH3COO)2）与亚碲酸钠（Na2TeO3）之间的反应来合成碲化铅（PbTe）纳米结构。当将表面活性剂聚乙烯吡咯烷酮（PVP）引入溶液中时，可以制备出直径约为30nm的均匀PbTe纳米棒，而在没有PVP的情况下，可以合成PbTe纳米管。此外，首次报道了一些有趣的Y形、V形、十字形PbTe纳米管。通过X射线衍射（XRD）、透射电子显微镜（TEM）和高分辨率TEM（HRTEM）对所得材料进行了表征。本文确定了两种不同的机制来解释纳米棒和纳米管的形成。解释了一种表面活性剂辅助的定向附着机制来描述PbTe纳米棒的形成，而我们推断PbTe纳米管遵循自发生成模板路线。
