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Catalytic wet peroxide oxidation of m-cresol over Fe/gamma-Al2O3 and Fe-Ce/gamma-Al2O3 期刊论文  OAI收割
chemical papers, 2015, 卷号: 69, 期号: 6, 页码: 827-838
作者:  Liu, Pei-Juan;  Wei, Huang-Zhao;  He, Song-Bo;  Sun, Cheng-Lin
收藏  |  浏览/下载：22/0  |  提交时间：2015/11/17
Preparation, characterization and optical properties of carbon doped ZnO nanocrystal (EI CONFERENCE) 会议论文  OAI收割
ICO20: Materials and Nanostructures, August 21, 2005 - August 26, 2005, Changchun, China
作者:  Liu J.;  Liu J.;  Liu J.;  Li S.;  Wang Z.
收藏  |  浏览/下载：34/0  |  提交时间：2013/03/25
In this paper  we prepared carbon doped nanocrystalline ZnO by pyrolyzed zinc stearate at 250C and 300C respectively. The XRD curves indicate the sample has polycrystalline hexagonal wurtzite structure. The XRD data of the sample prepared at 250C and 300C has a bigger angle shift about 0.05and 0.3respectively. That indicate the structure of the sample has some changes. The EDS indicate the sample contains Zn  O and C. So the XRD shift may attribute to the C. The XPS indicate the C doped in the crystal lattice of ZnO of the sample prepared at 300C  and the sample prepared at 250C may be only a few of C doped in the crystal lattice of ZnO. The PL of the sample prepared at 300C only has a weak ultraviolet emission  which indicates C modified the nanocrystalline ZnO surface as a non-radiative recombination center. In this process C could non-radiatively recombine the carries on the nanocrystallin ZnO surface. The sample prepared at 250C has a strong visible emission at about 530 nm. This emission band could be attributed to oxygen vacancy because C schlepped some oxygen on the nanocrystalline ZnO surface.