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

[Display omitted] •Multifunctional magnetic–plasmonic nanocomposite were fabricated via decorating Ag NPs on surface of porous Fe microsphere.•The porous Fe microspheres with controllable size were prepared through a simple and facile way.•The Fe@Ag were used for adsorption and detection of thiram b...

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Bibliographic Details
Published in:	Journal of hazardous materials Vol. 392; p. 122356
Main Authors:	Fu, Ziwei, Shen, Zhengdong, Fan, Qinzhen, Hao, Shaoxian, Wang, Ying, Liu, Xinquan, Tong, Xiaoxue, Kong, Xianming, Yang, Zhanxu
Format:	Journal Article
Language:	English
Published:	Netherlands Elsevier B.V 15-06-2020
Subjects:	Multi-Functional Porous Fe micro-sphere SERS Thiram Porous Fe micro-sphere Thiram Multi-Functional SERS
Online Access:	Get full text
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Summary:	[Display omitted] •Multifunctional magnetic–plasmonic nanocomposite were fabricated via decorating Ag NPs on surface of porous Fe microsphere.•The porous Fe microspheres with controllable size were prepared through a simple and facile way.•The Fe@Ag were used for adsorption and detection of thiram by SERS. 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.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0304-3894 1873-3336
DOI:	10.1016/j.jhazmat.2020.122356