期刊
ADVANCED POWDER TECHNOLOGY
卷 24, 期 1, 页码 331-335出版社
ELSEVIER
DOI: 10.1016/j.apt.2012.08.005
关键词
ZnO; Nanoparticles; Precipitation; XRD; TEM; FTIR; Dielectric studies
Using zinc nitrate as a precursor and NaOH starch as a stabilizing agent, hexagonal zinc oxide (ZnO) nanoparticles has been synthesized by precipitation method. The transmission electron microscopy (TEM) images show particles of nearly uniform spherical size of around 40 nm. The infrared spectroscopy (FT-IR) measurement reveals the peak at 500 cm(-1). corresponding to the Zn-O bond. Dielectric studies of ZnO nanoparticles show frequency dependence dielectric anomaly at low temperature (85-300 K). Results reveal that the capacitance and loss tangent decrease with the frequency while these parameters improve with the increasing of temperature. The increase of a.c. conductivity with the temperature indicates that the mobility of charge carriers is responsible for hopping and electronic polarization in ZnO nanoparticles. (C) 2012 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据