摘要由于硫化物纳米材料具有独特的物理特性及化学特性,如能带隙宽、高折射率、高透光率及可见光吸收性质,使其在光电子器件领域及光催化领域具有较大的应用前景。
材料的结构决定其性质,论文旨在制备具有高活性的Sb2S3可见光催化剂。以升华硫和氯化锑为原料,在不同反应条件,如反应温度、溶剂、反应时间下,采用水热法制备了不同微结构Sb2S3纳米晶。用X-射线粉末衍射,透射电子显微镜,紫外-可见光谱对产物的微观结构、形貌及光学性质进行表征。研究了反应温度、反应时间以及溶剂对产物的微观结构的影响。同时考察了Sb2S3纳米晶在可见光激发下对甲基橙的光催化降解能力,结果发现:用DMF作溶剂,反应24小时得到的Sb2S3晶体对甲基橙的降解率最好。7563
关键词 水热法 硫化锑 纳米晶 可见光光催化 甲基橙
毕业设计说明书(论文)外文摘要
Title The synthesis and the study of Sb2S3 nanocrystal with high proportion of active surface
Abstract
Because of the special properties such as wide band gap, high refractive index, high light transmittance, and the absorbance of visible light, sulfide nanopartocles had a bright future in electronic equipments and photoctalysis.
The structure of the material determined the properties, this article was mainly about the synthesis of the visible light photocatalysts Sb2S3 with high activity. The Sb2S3 nanocrystals with different structures were synthesized in different conditions( such as temperature, solvent, reaction time, etc.) by hydrothermal reaction with the use of sublimed sulfer and ammonium chloride as raw materials. And the structure and the morphology of the products were characterized by XRD,TEM,UV-Vis. At the same time the photoactivity was measured by the degradation of the methel orange. The results showed that with DMF as solvent and 24 hours reaction time, we got the Sb2S3 nanocrystals with the highest photoactivity.
Keywords:Hydrothermal Sb2S3 Nanocrystal Visible light photocatalysis Methel orange
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