高等学校化学学报 ›› 2019, Vol. 40 ›› Issue (10): 2067.doi: 10.7503/cjcu20190183

• 研究论文:无机化学 • 上一篇    下一篇

Fe3O4@Au核-壳纳米复合材料的制备及对农药福美双的SERS检测研究

韩东来1,2,李博珣2,杨硕1,3,闫永胜1,杨丽丽1,4,刘洋4,*(),李春香1   

  1. 1. 江苏大学绿色化学与化工技术研究院, 镇江 212013
    2. 长春理工大学材料科学与工程学院, 长春 130022
    3. 长春光学精密机械与物理研究所, 长春 130033
    4. 吉林师范大学功能材料物理与化学实验室, 四平 136000
  • 收稿日期:2019-03-27 出版日期:2019-10-08 发布日期:2019-08-20
  • 通讯作者: 刘洋 E-mail:liuyang@jlnu.edu.cn
  • 基金资助:
    国家自然科学基金(Nos.21676115);国家自然科学基金(Nos.61705020);中国博士后科学基金(No.2017M621645);江苏省博士后基金(Nos.1701103B);江苏省博士后基金(Nos.1701106B);江苏省自然科学基金(No.BK20180880)

Facile Synthesis of Fe3O4@Au Core-shell Nanocomposites as an SERS Substrate for the Detection of Thiram

HAN Donglai1,2,LI Boxun2,YANG Shuo1,3,YAN Yongsheng1,YANG Lili1,4,LIU Yang4,*(),LI Chunxiang1   

  1. 1. School of Chemistry & Chemical Engineering, Jiangsu University, Zhenjiang 212013, China;
    2. School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, China
    3. Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
    4. Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Siping 136000, China
  • Received:2019-03-27 Online:2019-10-08 Published:2019-08-20
  • Contact: LIU Yang E-mail:liuyang@jlnu.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos.21676115);† Supported by the National Natural Science Foundation of China(Nos.61705020);the Postdoctoral Science Foundation of China(No.2017M621645);the Postdoctoral Fund of Jiangsu Province, China(Nos.1701103B);the Postdoctoral Fund of Jiangsu Province, China(Nos.1701106B);the Natural Science Foundation of Jiangsu Province, China.(No.BK20180880)

摘要:

首先采用热分解法制备了Fe3O4纳米材料, 再将其作为磁性核, 分别采用种子沉积法和种子介导生长法制备了Fe3O4-Au核-卫星纳米复合材料和Fe3O4@Au核-壳纳米复合材料, 并对其形貌和性能进行了表征分析. 结果表明, 所制备的Fe3O4-Au核-卫星和Fe3O4@Au核-壳纳米复合材料粒径均匀, Au纳米颗粒均匀沉积/包覆在Fe3O4纳米材料表面, 且样品均具有良好的磁响应性. 使用4-氨基苯硫酚(4-ATP)作为拉曼探针分子, 对比了这两种纳米复合材料作为SERS基底时的拉曼信号增强效果. 结果显示, Fe3O4@Au核-壳纳米复合材料是更优秀的SERS基底, 且该SERS基底具有良好的信号再现性. 最后, 使用Fe3O4@Au核-壳纳米复合材料作为SERS基底, 成功地在苹果皮上检测出残留福美双的SERS信号.

关键词: 四氧化三铁, 金, 核-壳纳米复合材料, 表面增强拉曼光谱(SERS), 福美双

Abstract:

Fe3O4 nanomaterial was prepared by thermal decomposition method, and then Fe3O4-Au core-satellite nanocomposites and Fe3O4@Au core-shell nanocomposites were prepared by seed deposition method and seed-mediated growth method, respectively. The morphology of the Fe3O4-Au core-satellite nanocompo-sites and Fe3O4@Au core-shell nanocomposites were uniform and the Au nanoparticles were uniformly deposited/coated on the surface of Fe3O4 nanomaterials. The samples had good magnetic responsiveness. Using 4-aminothiophenol(4-ATP) as Raman probe molecule, the Raman signal enhancement effect of the two nanocomposites as SERS substrates was compared. The results showed that the Fe3O4@Au core-shell nanocompo-site was a better SERS substrate, and had good signal reproducibility. Finally, using Fe3O4@Au core-shell nanocomposite as SERS substrate, the SERS signal of the residual thiram was detected on the apple peel successfully.

Key words: Fe3O4, Au, Core-shell nanocomposites, Surface enhanced Raman scattering(SERS), Thriam

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