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赵真

作品数:4 被引量:11H指数:2
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Optical properties and photocatalytic activity of Nd-doped ZnO powders被引量:4
2014年
To improve the photocatalytic activity of zinc oxides, ZnO powders doped with different neodymium (Nd) concentrations were prepared via hydrothermal method. X-ray diffraction (XRD) together with X-ray photoelectron spectroscopy (XPS) patterns revealed that Nd atoms were successfully incorporated into the ZnO lattice. XRD pattern also showed some anisotropy of the powders. The photoluminescence (PL) spectrum demonstrated a strong and broad peak in the visible light region, and the intensity of visible light emission was enhanced by Nd-doping. The photocatalytic activity was evaluated by the degradation of methyl orange solution. It is shown that doping of Nd into ZnO induces an increase of the photocatalytic activity and it attains to optimum at 3% (mole fraction) doping concentration. The intense visible light emission and the enhanced photocatalytic activity were explained by the increase in electron hole pairs and induced defects like antisite oxygen Ozn and interstitial oxygen Oi, due to the doping of Nd.
赵真宋季岭郑佳红连建设
关键词:PHOTOLUMINESCENCEPHOTOCATALYSIS
基于虚拟现实的装载机运动模拟的实现
本文对装载机运动规律进行了研究和介绍,并实现了基于虚拟现实的装载机运动的模拟,使其在计算机上能够生动的展示出来,实现人机互动。 介绍了虚拟现实的发展与应用,阐述了基于虚拟现实的装载机运动模拟系统构成,建立了装载机运动动力...
赵真
关键词:虚拟现实OPENGVS视景仿真
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稀土掺杂氧化锌粉末的制备及光学/光催化性能的研究
半导体光催化有其本身独特的优势:无毒无害、对环境没有污染、催化剂本身稳定性很好且循环利用率高。因此半导体光催化降解在环境污染治理过程中有广泛的应用:废水处理、重金属还原、空气净化等。在当前的光催化领域存在很多的催化材料,...
赵真
关键词:稀土掺杂ZNO光致发光光催化水热法
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Synthesis and photoluminescence of Y and Cd co-doped ZnO nanopowder被引量:1
2013年
Y and Cd co-doped ZnO nanopowders were prepared via chemical precipitation method in order to modify the band gap and increase the luminescent intensity. The structures and optical properties of the as-synthesized samples were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and photoluminescence (PL). The effects of Y and Cd ions on the optical properties of the samples were studied. Doping of Y into ZnO evidently increases the intensity of UV emission, or co-doping of Y and Cd enhances the UV emission, narrows the band gap of ZnO and hence red shifts the UV emission at the same time. Therefore, Y and Cd co-doped ZnO nanopowders exhibit an intense violet emission in the room temperature PL spectrum, which could be a potential candidate material for optoelectronic applications.
宋季岭郑佳红赵真周柏玉连建设
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