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Title: Surface plasmon resonance-enhanced photoelectrochemical sensor for detection of an organophosphate pesticide chlorpyrifos
Authors: Treenet Thepudom
Chutiparn Lertvachirapaiboon
Kazunari Shinbo
Keizo Kato
Futao Kaneko
Teerakiat Kerdcharoen
Akira Baba
Niigata University
Mahidol University
Keywords: Materials Science
Issue Date: 1-Mar-2018
Citation: MRS Communications. Vol.8, No.1 (2018), 107-112
Abstract: © Copyright Materials Research Society 2017. Detection of chlorpyrifos (CPF) using a surface plasmon resonance (SPR)-enhanced photoelectrochemical sensing system is demonstrated in this study. The presence of CPF was detected based on an increase in the short-circuit photocurrent when a sample is injected into the electrolyte at different concentrations. The short-circuit photocurrent signal was enhanced by both localized SPR of the gold nanoparticles and by the effects of grating-coupled propagating SPR. Using the hybrid SPR-enhancement system, CPF detection was achieved at concentrations as low as 7.5 nM. The proposed technique of leveraging a multifunctional photovoltaic effect can be used for a variety of sensing applications.
ISSN: 21596867
Appears in Collections:Scopus 2018

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