微晶
材料科学
纳米-
带隙
PEG比率
降水
傅里叶变换红外光谱
化学工程
吸收光谱法
分析化学(期刊)
复合材料
光学
冶金
色谱法
光电子学
物理
工程类
气象学
经济
化学
财务
作者
Varadharajan Rajendran
出处
期刊:Journal of Nanostructures
[Nanoscience and Nanotechnology Research Center, University of Kashan]
日期:2017-10-31
卷期号:7 (3)
被引量:5
摘要
The SDS, PEG and CTAB roofed MgO nano powders were synthesized by co-precipitation method. The sintered nano powders was shown Fm-3m space group with cubic phase obtained by the XRD pattern. The lattice strain was calculated to be used Williamson-Hall equations (W-H). The formation of Mg-O bond and hydroxyl radicals on the surface were confirmed by the FTIR analyses. The TEM revealed that the morphology of sintered nano powders has three different dimensions (0D, 1D, 2D) with average crystallites size was about ̴ 20-80 nm and length usually 200-500 nm. The UV-DRS spectra show that the ionic surfactants roofed MgO leads to band gap shrinkage. The evaluated optical band gap energy is Eg= 4.10eV, 3.41eV and 3.12eV for SDS, PEG and CTAB-MgO nano powder respectively. Also extending light absorption towards the visible region due to decrease in crystallite size of surfactants roofed MgO nano powders utilizing for photocatalytic purpose and opto electronic devices.
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