Plasmonic metal NP-bismuth composite film with amplified SERS activity for multiple detection of pesticides and veterinary drugs

Dan Liang,Yinjuan Xu, Fang Peng,Wei Ma,Yuan Zhao

CHEMICAL ENGINEERING JOURNAL（2023）

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摘要

•Spiky Au@Ag NPs-Bi2WO6 film is designed and shows enhanced SERS peaks.•Bi2WO6 doped by oxygen vacancies displays plasmonic effects.•Bi2WO6 as a dielectric medium modulates the local electric field intensity.•“Donor-bridge-acceptor” charge transfer process is proposed for SERS enhancement.•SERS-active film achieves multiple and in-site detection of pesticides and veterinary drugs.

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关键词

Spiky Au@Ag NPs,Bismuth nanomaterials,SERS,Pesticides and veterinary drugs,Multiple detection

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