Fe3O4@Au纳米星颗粒作为循环SERS基底用于农药残留物的检测  

Fe3O4@Au nanostar as reproducible SERS substrates for the detection of pesticide residues

作　　者：丁倩倩 顾涛[1] 董荣录 DING Qianqian;GU Tao;DONG Ronglu(Department of Precision Manufacturing Engineering, Suzhou Vocational Institute of Industrial Technology, Suzhou 215104, China;Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China;Chinese Academy of Sciences, Hefei 230031,P.R.China)

机构地区：[1]苏州工业职业技术学院,苏州215104 [2]中国科学技术大学,合肥230026 [3]中科院合肥物质研究院,合肥230031

出　　处：《光散射学报》2020年第1期58-62,共5页The Journal of Light Scattering

基　　金：江苏省高级访问工程师计划项目(2019QYSJPX217);苏州工业职业技术学院博士科研启动项目(2019kyqd003);苏州工业职业技术学院科研课题(SGYKJ201732)。

摘　　要：本文首先采用共沉淀的方法制备了Fe3O4纳米颗粒,随后经柠檬酸钠和对苯二酚还原氯金酸的方法在Fe3O4纳米颗粒的表面生成刺状Au纳米结构,进而获得Fe3O4@Au纳米星颗粒。该Fe3O4@Au纳米星颗粒作为SERS基底,用作农药残留物福美双和敌瘟磷的检测。由于高密度的Au纳米结构的尖端效应,该基底显示出高敏感的SERS活性。最后利用Fe3O4纳米颗粒的磁性,将其用于循环SERS测试,研究了其循环使用特性。In this paper,Fe3O4 nanoparticles were prepared by co-precipitation method.And then the spiny Au nanostructures were formed on the surface of Fe3O4 nanoparticles by sodium citrate and hydroquinone reduction of chloroauric acid.The Fe3O4@Au nanostars as Surface-enhanced Raman spectroscopy(SERS)substrate used for thiram pesticide and ediphenphos detection.Due to high-density Au nanotip,the Fe3O4@Au nanostars exhibited high-sensitivity SERS activity.Additionally,this SERS substrate based on Fe3O4@Au nanostars can be found to be recyclable in virtue of the magnetic properties of Fe3O4 nanoparticles.

关 键 词：Fe3O4@Au纳米星 表面增强拉曼光谱 农药残留物 高敏感 循环SERS基底 

分 类 号：O657.37[理学—分析化学]