Preparation of nano-sized flower-like ZnO bunches by a direct precipitation method
Preparation of nano-sized flower-like ZnO bunches by a direct precipitation method
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DOI：
10.1016/j.apt.2012.11.002
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发表时间：
2013-05-01
影响因子：
5.2
通讯作者：
Liu, Jinrong
中科院分区：
文献类型：
--
作者：
Wang, Hongqiang;Li, Caihong;Liu, Jinrong
本文以Zn（NO3）（2）中心点6 H（2）O和NH3中心点H2O为原料，采用直接沉淀法制备了纳米ZnO，并研究了合成工艺对产物的影响。通过差热分析（DTA）和热重分析（TGA）曲线，确定了前驱体沉淀ZnO的最佳煅烧温度。采用X射线衍射（XRD）、X射线能谱（EDS）、扫描电镜（SEM）和透射电镜（TEM）对煅烧后的ZnO粉体的纯度、微观结构和形貌进行了研究。合成的ZnO粉体具有纤锌矿结构，纯度高。最终产物呈花状，由花状ZnO束组成的纳米棒直径为20-100 nm，长度为0.5 ~ 1 μ m。讨论了工艺条件对ZnO形貌的影响。(C)2012年日本粉末技术学会。由Elsevier B. V.和日本粉末技术协会出版。All rights reserved.
In this work, nano-sized ZnO particles were prepared by a direct precipitation method with Zn(NO3)(2)center dot 6H(2) O and NH3 center dot H2O as raw materials, and the impact of the synthesis process was studied. The optimal thermal calcined temperature of precursor precipitates of ZnO was obtained from the differential thermal analysis (DTA) and the thermal gravimetric analysis (TGA) curves. The purity, microstructure, morphology of the calcined ZnO powders were studied by X-ray diffraction (XRD), energy dispersive X-ray spectrum (EDS), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The synthesized ZnO powders had a wurtzite structure with high purity. The final products were of flower-like shape and the nanorods which consisted of the flower-like ZnO bunches were 20-100 nm in diameter and 0.5-1 mu m in length. The effect of process conditions on the morphology of ZnO was discussed. (C) 2012 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.