Preparation by ultrasonic and photocatalytic activity of ZnO nanorods-graphene composites

被引：0
|
作者：
Chen, Hong-Liang [1 ]
Wang, Shu-Lin [2 ]
Xia, Li-Zhen [1 ]
机构：
[1] School of Energy and Power Engineering, University of Shanghai for Science and Technology
[2] School of Materials Science and Engineering, University of Shanghai for Science and Technology
来源：
Gongneng Cailiao/Journal of Functional Materials | 2014年 / 45卷 / 06期
关键词：
Expanded graphite; Graphene-ZnO nanorod; Photocatalytic activity; Ultrasonic;
D O I：
10.3969/j.issn.1001-9731.2014.06.021
中图分类号：
学科分类号：
摘要：
In this work, expanded graphite was prepared from natural flake graphite with concentrated nitric acid. Zinc processed by mechanical milling and expanded graphite were dispersed in the distilled water and ethanol. Then, they were processed via ultrasonic of 30 kHz by eight hours to synthesize series of composites, consisting of ZnO nanorod and grapheme (ZnO/G) with an excellent structure. The influence of different proportion of zinc and expanded graphite on the photocatalytic activity of ZnO/G composites was studied. The photocatalysts were characterized by XRD, Raman, SEM, TEM and UV-Vis absorbance spectroscopy. The results revealed that ZnO synthesized by ultrasonic was short rod-like with the wurzite hexagonal structure and grows on the surface of graphene equably. The diameter of ZnO nanorod was about 20 nm. The degradation rate of methyl-orange by ZnO/G composites prepared by different proportions varied greatly. The photocatalytic activity of ZnO/G composites was prior to ZnO when the content of zinc in reactant was 1.0 g.
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页码：06097 / 06101
页数：4
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