首页> 外文期刊>Canadian Journal of Pure and Applied Sciences >CHARACTERIZATION OF ZnO NANOPOWDERS SYNTHESIZED BY THE DIRECT PRECIPITATION METHOD
【24h】

CHARACTERIZATION OF ZnO NANOPOWDERS SYNTHESIZED BY THE DIRECT PRECIPITATION METHOD

机译:直接沉淀法表征ZnO纳米粉

获取原文
       

摘要

The present paper deals with the synthesis of zinc oxide nanoparticles via a direct precipitation method using zinc acetate dihydrate as a precursor. The synthesized ZnO powder was characterized by means of XRD, UV-Visible and IR spectroscopy, SEM-EDX and TG-DTA. The XRD results reveal that the synthesized ZnO has the wurtzite phase structure with a crystallite size of about 50nm. The ZnO particles are spherical in shape and only zinc and oxygen were detected by EDX analysis signifying the high purity of the synthesized ZnO. The UV-Vis. spectrum of the ZnO powder indicates a band gap of about 3.2 eV, showing a slight red shift compared to the band gap of the bulk ZnO (3.37 eV). The prepared ZnO powder exhibits a specific surface area of 16.5 m 2 g -1 , determined by Brunauer-Emmett-Teller (BET) equation.
机译:本论文涉及使用乙酸锌二水合物作为前体的直接沉淀法合成氧化锌纳米颗粒。借助X射线衍射,紫外可见光谱和红外光谱,SEM-EDX和TG-DTA对合成的ZnO粉进行表征。 XRD结果表明,合成的ZnO具有纤锌矿相结构,晶粒尺寸约为50nm。 ZnO颗粒呈球形,通过EDX分析仅检测到锌和氧,表明合成的ZnO具有高纯度。 UV-Vis。 ZnO粉末的光谱表明带隙约为3.2 eV,与本体ZnO的带隙(3.37 eV)相比,显示出轻微的红移。通过Brunauer-Emmett-Teller(BET)方程确定,所制备的ZnO粉末具有16.5m 2 g -1的比表面积。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号