还原氧化石墨烯/SnS2纳米复合物的制备与可见光光催化性能  

Preparation and visible-light photocatalytic activity of reduced graphene oxide/SnS_2 nanocomposite

作　　者：戴高鹏[1,2] 李冰冰 刘素芹 刘祥[1] 

机构地区：[1]湖北文理学院化学工程与食品科学学院,襄阳441053 [2]低维光电材料与器件湖北省重点实验室,襄阳441053

出　　处：《化工新型材料》2016年第2期70-72,共3页New Chemical Materials

基　　金：湖北省自然科学基金(2012FFB01903);湖北省教育厅基金(Q20132608);襄阳市科技局项目

摘　　要：以氧化石墨烯(GO)和SnCl_4·5H_2O为前驱体,通过水热法制备了SnS_2/还原氧化石墨烯(RGO)复合材料。用X射线衍射(XRD)、扫描电镜(SEM)、拉曼光谱和紫外-可见(UV-Vis)吸收光谱表征了所制备的样品。在可见光(λ≥420nm)光照下光催化降解甲基橙水溶液来检测SnS_2/RGO复合物的光催化活性。结果表明:所制备的SnS_2/RGO复合物表现出增强的可见光光催化活性,其中,含1%(wt,质量分数,下同)石墨烯的复合光催化剂活性最好。SnS_2/RGO复合物光催化活性的增强是由于石墨烯是优秀的电子受体和传输体,它减少了光生载流子的复合,从而提高了光催化活性。nS2/reduced graphene oxide （RGO） nanocomposites were prepared by hydrothermal treatment of gra phene oxide （GO） and SnCl4.5H2O. The prepared samples were characterized by X-ray diffraction （XRD）, scanning electron microscopy （SEM）, raman spectrum and UV visible （UV-Vis） diffuse reflectance spectroscopy. The samples were examined as photocatalysts for degradation of methyl orange （MO） in aqueous solutions under visible light irradiation （λ≥ 420nm）. The results showed that the samples exhibited enhanced visible-light photocatalytic activity. The photoactivity of sample with RGO of 1% （in mass） was greater than that of other samples. The enhanced photocatalytic activity was due to RGO as an excellent electron acceptor and transporter, thus reducing the recombination of charge carriers and enhancing the photocatalytic activity.

关 键 词：SnS2 还原氧化石墨烯 光催化 可见光 

分 类 号：TB332[一般工业技术—材料科学与工程] O643.36[理学—物理化学]