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Preparation and Ultraviolet Emission of ZnO-MgO Nanocomposite by Glycine-Nitrate Combustion Process
Dong Weiwei,Yang Beifang*,Fu Zhengping,Wang Zhen,Yang Yingling,Zuo Jian
Author NameAffiliationE-mail
Dong Weiwei Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026  
Yang Beifang* Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026 bfyang@ustc.edu.cn  
Fu Zhengping Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026  
Wang Zhen Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026  
Yang Yingling Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026  
Zuo Jian Structure Research Laboratory, University of Science and Technology of China, Hefei 230026  
Abstract:
ZnO-MgO nanocomposite was prepared by glycine nitrate combustion method.Its photoluminescence property, the structure and annealing temperature dependence was studied by XRD, FTIR and SEM. The results show that the photoluminescence property of ZnO-MgO nanocomposite is greatly improved compared with that of pure ZnO. Under 325 nm laser excitation, the emission spectra of the 900 ℃ treated composite sample had an obviously enhanced ultraviolet (UV) band centered at 385 nm at room temperature. The luminescence intensity of the UV band became stronger with the increase of annealing temperatures and reached a maximum at 900 ℃ but decreased at 1000 ℃. The photoluminescence intensity was mainly affected by the grain size, the crystallization and the action between ZnO and MgO nanoparticles. In addition, an appropriate G/N value was favorable for improving the UV-PL properties of the nanocomposite samples.
Key words:  ZnO, MgO, Nanocomposite, Glycine nitrate combustion, UV emission
FundProject:
甘氨酸燃烧法合成纳米ZnO-MgO及其紫外光发射
董伟伟,杨碚芳*,傅正平,王震,杨应岭,左健
摘要:
利用甘氨酸燃烧法制备了ZnO-MgO纳米复合材料,并在不同温度进行热处理.通过X射线衍射、扫描电子显微镜和傅里叶变换红外吸收谱,对其升温过程中的结构变化进行了表征,研究了热处理温度对样品室温光致发光行为的影响.结果表明,复合材料的发光性能与纯ZnO相比有很大改善,经 900 ℃热处理的纳米复合材料,其发射谱由一个强紫外发射带(峰值385 nm)构成;当热处理温度低于900 ℃时,发光强度随热处理温度的升高而增强,进一步将热处理温度升至1000 ℃时发光强度又明显降低.发光强度主要受ZnO、 MgO纳米晶的
关键词:  ZnO  MgO  纳米复合; 甘氨酸燃烧法; 紫外光发射
DOI:10.1088/1674-0068/18/3/395-400
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