ZnS空心微球的制备及其光催化性能研究

Preparation and Photocatalytic Properties of ZnS Hollow Microspheres

采用简单的一步溶剂热法合成了ZnS空心微球。利用X射线衍射(XRD)、扫描电子显微镜(SEM)、高分辨透射电子显微镜(HRTEM)、X射线光电子能谱(XPS)和紫外可见吸收光谱(UV-vis)等测试手段对其形貌、结构和光学性质进行了分析,并以罗丹明B(Rh B)为模型污染物研究了样品的光催化性能。结果表明:样品为纯度较高的立方闪锌矿型ZnS微球,且球体由纳米级小微粒组装而成;在降解Rh B的光催化研究中,以乙醇-水为溶剂合成的ZnS微球光催化性能较优。

ZnS hollow microspheres were synthesized by a simple one-step solvothermal method. The crystal structure, morphology, composition and optical property of the samples were characterized by XRD, SEM, HRTEM, XPS and UV-Vis absorption spectrum. The results show that the well-dispersed ZnS microspheres are comprised of nanoparticles. Finally, a photocatalytic degradation test show that the higher efficiency degradation of rhodamine B （RhB） was obtained using ZnS microspheres synthesized in CH3 CH2OH-H2O system.