花状硫化铜级次纳米结构的制备及可见光催化活性研究  

Preparation of flower-like CuS hierarchical nanostructures and its visible light photocatalytic performance

作　　者：赵娟[1] 胡慧芳[1] 曾亚萍[1] 程彩萍[1] 

机构地区：[1]湖南大学物理与微电子科学学院,长沙410082

出　　处：《物理学报》2013年第15期459-465,共7页Acta Physica Sinica

摘　　要：本实验以氯化铜(CuCl2·2H2O)和二硫化碳(CS2)为原料,以乙二醇(C2H6O2)为溶剂,通过溶剂热法成功制备了具有可见光活性的花状硫化铜(CuS)级次纳米结构.并利用X射线粉末衍射技术(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)等技术对其进行了表征,利用紫外可见吸收光谱(Uv-vis)分析了其光学性能,并以甲基橙为目标降解物对其可见光催化活性进行了研究.结果表明:花状CuS级次纳米结构具有很高的可见光催化活性,与体相CuS粉末相比有很大的提高,在自然光照射下对甲基橙的降解率可以达到100%.同时本文对花状级次纳米结构的形成机理进行了分析.Flower-like copper monosulfide （CuS） hierarchical nanostructures composed of nanoplates were successfully synthesized by means of a simple solvothermal process, using CuCl2·2H2O as Cu-precursor, CS2 as S-source and ethylene glycol （C2H6O2） as the solvent. The morphology and structure of the product were characterized by X-ray powder diffraction （XRD）, scanning electron microscopy （SEM）, and transmission electron microscopy （TEM）. The optical properties of the copper monosulfide hierarchical nanostructures were investigated by UV-visible absorption spectra. In addition, the photocatalytic activity of the flower-like CuS hierarchical nanostructures were evaluated by the degradation of methyl orange solution under natural light. Results demonstrate that the as-prepared flower-like CuS hierarchical nanostructures possess high photocatalytic performance, the degradation rate is up to 100% after 90 min degradation under the irradiation of natural light, which is much higher than bulk CuS powder. The formation mechanism of flower-like CuS hierarchical nanostructures was preliminarily analysed, alss.

关 键 词：硫化铜 溶剂热 级次纳米结构 光催化 

分 类 号：TB383.1[一般工业技术—材料科学与工程] O614.121[理学—无机化学]