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石墨烯负载ZnS光催化材料的制备及其性能

作者:时间:2014-06-06点击数:

全文下载:2014020119

耿延玲, 郭伟博, 匡少平

(青岛科技大学  化学与分子工程学院,山东 青岛 266042)

 摘要: 采用水热法在不加与添加聚乙烯吡咯烷酮(PVP)的条件下分别制备了硫化锌/石墨烯(ZnS/RGO)和ZnS/RGOPVP复合材料。通过X射线衍射、Fourier变换红外光谱、扫描电子显微镜等手段对样品的组成与形貌进行了分析表征。以亚甲基蓝为目标降解物在紫外光下研究了各样品的光催化活性。结果表明: ZnS复合RGO后明显提高了ZnS的光催化性能;加入PVP后提高了ZnS在RGO表面的附着量并抑制了ZnS颗粒的团聚,进一步提高了ZnS/RGO的光催化性能。

 关键词: 石墨烯; ZnS; 复合材料; 光催化

 中图分类号: O 614文献标志码: A

 Preparation and Photocatalytic Properties of ZnS/RGO Composites

 GENG Yanling, GUO Weibo,  KUANG Shaoping

 (College of Chemistry and Molecular Engineering, Qingdao University of Science

and Technology, Qingdao 266042,China)

 Abstract: ZnS/RGO and ZnS/RGOPVP composites were successfully synthesized by a hydrothermal method using ZnS and graphene oxide (GO) or PVP as raw materials. The resulted samples were characterized by Xray diffraction,  Fourier transform infrared spectroscopy, scanning electron microscopy and UVVis absorption spectroscopy.UV light was used as the light source to evaluate the photocatalytic activity of the products for the degradation of methyl blue. The results show that photocatalytic activity of ZnS is enhanced in the presence of RGO and PVP.

Key words: reduced graphene oxide(RGO); ZnS; composites; photocatalysis

 收稿日期: 20121225

基金项目: 国家自然科学基金项目(20977055);山东省自然科学基金项目(2009ZRB019WB);青岛市应用基础研究重点计划项目(11243(16)jch);地质过程与矿产资源国家重点实验室开放课题项目(GPMR201102).

作者简介: 耿延玲(1975─),女,副教授.

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