A high-performance SERS-imprinted sensor doped with silver particles of different surface morphologies for selective detection of pyrethroids in rivers. (31st October 2017)

• Record Type: Journal Article
• Authors: Li, Hongji; Wang, Xiaonan; Wang, Zirun; Jiang, Jiaqi; Qiao, Yu; Wei, Maobin; Yan, Yongsheng; Li, Chunxiang
• Is Part Of: New journal of chemistry. Volume 41:Number 23(2017)
• Page Start: 14342
• Page End: 14350
• Publication Date: 2017-10-31
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/c7nj02811c
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : Ag-MIPs were prepared through a multistep procedure, in which MPS and LC were selected as the template molecules. These materials could selectively rebind the templates and could be detected using Raman spectroscopy. Abstract : Herein, a novel technique that combined surface enhanced Raman scattering (SERS) with molecular imprinting was presented. In this study, SERS-active Ag particles with different surface morphologies were synthesized with the assistance of small acid molecules. Through the SERS investigation of different Ag morphologies, the Ag particles with a wool-ball surface morphology presented the perfect SERS capacity. Then, the Ag particles with a wool-ball surface morphology were used as the SERS substrate and combined via the technique of molecular imprinting to prepare SERS-MIPs for LC detection in a river. Under the optimal condition, a good linear relationship ( R 2 = 0.98) was observed between the Raman signal (at 1595 cm −1 ) and the concentration of the templates, and the limit of detection was 0.013 μmol L −1 . Moreover, the selective experiment proved that the specific selectivity of this material was due to the template. It has been confirmed that Ag-MIP is a kind of highly sensitive and selective sensor material for pyrethroid detection.