A Simple Synthesis and Characterization of PbTe Nano-Particles
(0) PbTe nanopowders with different morphologies were prepared by aaaa simple chemical synthesis. Similar cubic nanoparticles have been successfully synthesized by using Pb(NO3)2 and Na2TeO TeO3 as the precursors, and NaBH4 as the reductant. The single PbTe phase is confirmed from XRD pattern, and obvious width of XRD peaks occur. The size of powders is distributed from 20nm to 70nm in aaaa typical process according to observation from SEM and TEM images. Based on HRTEM observation, PbTe nanopowders with an amorphous layer show polyhedron feature. In different crystallization stages, there are different morphologies due to competition between surface energy and crystal face energy. The gggglobular, lobular, polyhedron and cubic particles belongs to different growth stages, respectively. Possible formation mechanisms of PbTe were also discussed.
HongQuan Liu Lei Shi FeiXiang Hao YiJie Gu QingKun He
College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technol
国际会议
长春
英文
1-4
2011-08-29（万方平台首次上网日期，不代表论文的发表时间）