Preparation of multi-functional magnetic-plasmonic nanocomposite for adsorption and detection of thiram using SERS

Ziwei Fu; Zhengdong Shen; Qinzhen Fan; Shaoxian Hao; Ying Wang; Xinquan Liu; Xiaoxue Tong; Xianming Kong; Zhanxu Yang

doi:10.1016/j.jhazmat.2020.122356

Preparation of multi-functional magnetic-plasmonic nanocomposite for adsorption and detection of thiram using SERS

J Hazard Mater. 2020 Jun 15:392:122356. doi: 10.1016/j.jhazmat.2020.122356. Epub 2020 Feb 19.

Authors

Ziwei Fu¹, Zhengdong Shen¹, Qinzhen Fan², Shaoxian Hao¹, Ying Wang¹, Xinquan Liu¹, Xiaoxue Tong¹, Xianming Kong³, Zhanxu Yang⁴

Affiliations

¹ College of Chemistry, Chemical Engineering and Environment Engineering, Liaoning Shihua University, Fushun, Liaoning 113001, PR China.
² College of Chemical Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, PR China; Guangdong Provincial Engineering Technology Research Center of Petrochemical Corrosion and Safety, Guangdong University of Petrochemical Technology Maoming 525000, PR China.
³ College of Chemistry, Chemical Engineering and Environment Engineering, Liaoning Shihua University, Fushun, Liaoning 113001, PR China. Electronic address: xmkong@lnpu.edu.
⁴ College of Chemistry, Chemical Engineering and Environment Engineering, Liaoning Shihua University, Fushun, Liaoning 113001, PR China. Electronic address: yangzhanxu@lnpu.edu.cn.

PMID: 32109795
DOI: 10.1016/j.jhazmat.2020.122356

Abstract

Magnetic materials have been widely used for constructing substrate in surface enhanced Raman scattering (SERS) sensing due to the magnetic responsibility. Here, we reported a facile and effective approach to construct multi-functional SERS substrate based on assembling Ag nanoparticles (NPs) on porous Fe microspheres. The porous Fe microspheres were prepared through hydrogen reduction of Fe₂O₃ NPs with porous structure, in which the size and morphology of Fe could be well controlled. The surface of Fe was grafted with amino group, and then decorated with Ag NPs. The surface area and pore size of Fe microsphere were characterized by nitrogen adsorption and desorption. The Fe@Ag nanocomposite illustrated a good SERS activity. Furthermore, this substrate could be used for pesticide monitoring by portable Raman spectrometer. Especially, the porous Fe microsphere could adsorb analyte from target sample and the Fe@Ag could be concentrated by magnetic force to amplify the SERS signal for thiram detection.

Keywords: Multi-Functional; Porous Fe micro-sphere; SERS; Thiram.

Publication types

Research Support, Non-U.S. Gov't