Fe3O4@SiO2@ZnO/ZnS纳米复合材料的制备及性能研究  

Preparation and properties of Fe3O4@SiO2@ZnO/ZnS nanocomposites

作　　者：刘晓艳[1,2] 徐婷 王鹏飞 魏茂彬[1,2] LIU Xiao-yan;XU Ting;WANG Peng-fei;WEI Mao-bin(Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education,Jilin Normal University,Changchun 130103,China;National Demonstration Center for Experimental Physics Education,Jilin Normal University,Siping 136000,China)

机构地区：[1]吉林师范大学功能材料物理与化学教育部重点实验室,吉林长春130103 [2]吉林师范大学物理国家级实验教学示范中心,吉林四平136000

出　　处：《吉林师范大学学报（自然科学版）》2021年第1期17-21,共5页Journal of Jilin Normal University:Natural Science Edition

基　　金：国家自然科学基金项目(61705079);吉林省教育厅“十三五”科学技术研究项目(JJKH20191019KJ);吉林师范大学博士启动项目(吉师博2016007)。

摘　　要：选用Fe3O4@SiO2@ZnO作为基体材料,采用一步硫化法成功制备出Fe3O4@SiO2@ZnO/ZnS纳米复合材料.通过XRD、SEM、TEM和XPS测试表征手段证实了ZnO的表面已转化成ZnS,构建出ZnO/ZnS核壳结构.VSM测试结果表明,制得的Fe3O4@SiO2@ZnO/ZnS纳米复合材料具有明显的超顺磁性,利于材料的回收再利用.在Fe3O4@SiO2@ZnO/ZnS纳米复合材料的紫外-可见吸收光谱中,不仅观测到了ZnO和ZnS的特征吸收边,而且在可见光区域出现了明显增强的吸收边.通过对四环素的可见光催化降解实验,证实了Fe3O4@SiO2@ZnO/ZnS纳米复合材料具有优异的可见光催化活性.Herein,Fe3O4@SiO2@ZnO nanocomposites had been chosen as the basis materials to successfully synthesize Fe3O4@SiO2@ZnO/ZnS nanocomposites via the one-step sulfidation method.The XRD、SEM、TEM and XPS experimental results showed that the surface of the ZnO had been converted to ZnS,forming ZnO/ZnS core/shell heterostructures.VSM test results showed that the Fe3O4@SiO2@ZnO/ZnS nanocomposites had superior superparamagnetism,which would be beneficial for the recycling and reuse of the materials.In the UV-vis absorption spectrum of Fe3O4@SiO2@ZnO/ZnS,not only the characteristic absorption edges of ZnO and ZnS were observed,but also the significantly enhanced absorption edges appeared in the visible region.The Fe3O4@SiO2@ZnO/ZnS nanocomposites displayed excellent visible photocatalytic activity in the catalytic degradation experiment of tetracycline.

关 键 词：Fe3O4@SiO2@ZnO/ZnS 磁性纳米复合材料 可见光催化性能 四环素 

分 类 号：O643.3[理学—物理化学]