异质结型CuO/ZnO复合纳米线的制备及光催化性能  

Fabrication and Photocatalytic Activity of Heterojunction Type CuO/ZnO Composite Nanowires

作　　者：贾哲 任帅 张洁静 高世勇[2] 王金忠[2] JIA Zhe;REN Shuai;ZHANG Jiejing;GAO Shiyong;WANG Jinzhong(Department of Physical Chemistry,Taiyuan University,Taiyuan 030032,China;School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,China)

机构地区：[1]太原学院理化系,太原030032 [2]哈尔滨工业大学材料科学与工程学院,哈尔滨150001

出　　处：《光子学报》2021年第1期67-74,共8页Acta Photonica Sinica

基　　金：国家重点研发计划项目(No.2019YFA0705201),黑龙江省自然科学基金(No.LH2020E033)。

摘　　要：在室温下,通过溶液法在Cu衬底上制备了CuO纳米线,然后采用溶剂热法在CuO纳米线表面生长ZnO纳米颗粒以构建CuO/ZnO复合纳米线异质结构。利用扫描电镜、透射电镜、X射线衍射仪和X射线光电子能谱分析了样品的形貌、结构和元素组成。结果显示CuO/ZnO复合纳米线由ZnO纳米颗粒和CuO纳米线组成。在模拟太阳光照射下,以亚甲基蓝溶液为模拟污染物研究了样品的光催化性能。结果表明,相比纯CuO纳米线,CuO/ZnO复合纳米线能够使亚甲基蓝溶液的光降解效率达到40%,在相同条件下具有更优异的光催化活性。光催化机理研究表明CuO/ZnO纳米复合材料光催化活性的增强主要是由于CuO与ZnO结合形成的p-n异质结有效促进了光生载流子的分离。At room temperature,CuO nanowires were prepared on Cu substrate by solution method.Subsequently ZnO nanoparticles were grown on the surface of the CuO nanowires by solvothermal method to construct CuO/ZnO composite nanowires heterostructures.The morphology,structure and element composition of samples were characterized by using scanning electron microscope,transmission electron microscope,X-ray diffractometer and X-ray photoelectron spectroscopy.The results show that CuO/ZnO composite nanowires are composed of ZnO nanoparticles and CuO nanowires.Under simulated sunlight,the photocatalytic performances of the samples were studied by using Methylene Blue(MB)solution as the simulated pollutant.As a result,compared with pure CuO nanowires,CuO/ZnO composite nanowires can make the photodegradation efficiency of MB solution up to 40%,and display better photocatalytic activity.The research on photocatalytic mechanism indicates that the enhancement of the photocatalytic activity of CuO/ZnO nanocomposites is mainly due to the p-n heterojunction formed by the combination of CuO and ZnO,which effectively promotes the separation of photogenerated carriers.

关 键 词：光催化 异质结 纳米线 CUO ZNO 

分 类 号：O644[理学—物理化学]