文章基本信息

标题：SYNTHESIS AND CHARACTERIZATION OF ZnS NANO-CRYSTALS AND ITS PHOTOCATALYTIC ACTIVITY ON ANTIBIOTICS
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作者：Liang Ni ; Xinlin Liu ; Mingjun Zhou 等
期刊名称：Fresenius Environmental Bulletin
印刷版ISSN：1018-4619
出版年度：2015
卷号：24
期号：7
页码：2280-2288
语种：English
出版社：PSP Publishing
摘要：ZnS nanocrystals were synthesized via hydrothermal process and characterized by X-ray diffraction (XRD), Transmission electron microscope (TEM), Ultraviolet–visible spectroscopy (UV-vis) and Fourier transform infrared spectrometer (FT-IR). The results indicated that the obtained ZnS nanocrystals are cubic sphalerite with little partical size and good dispersity. Under UV light irradiation and controlling the experimental conditions, the photocatalytic activity of ZnS nanocrystals was evaluated by degradation of tetracycline (TC). Various factors have been compared through a series of experiments, and the optimal reaction condition has been found out. Additionally, the photocatalytic activity of recycled ZnS decreased with the increasing runs of recycling. Finally, the photocatalytic reaction mechanism of ZnS nanocrystals was proposed and the photocatalytic degradation pathway of TC was analysed. Overall, the ZnS photocatalysis was found to be a promising process for removing TC from wastewater.
关键词：ZnS nanocrystals; synthesis and characterization; tetracycline; photocatalytic degradation