Publication: Surface plasmon resonance-enhanced photoelectrochemical sensor for detection of an organophosphate pesticide chlorpyrifos
Issued Date
2018-03-01
Resource Type
ISSN
21596867
21596859
21596859
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2-s2.0-85042216333
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Mahidol University
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SCOPUS
Bibliographic Citation
MRS Communications. Vol.8, No.1 (2018), 107-112
Suggested Citation
Treenet Thepudom, Chutiparn Lertvachirapaiboon, Kazunari Shinbo, Keizo Kato, Futao Kaneko, Teerakiat Kerdcharoen, Akira Baba Surface plasmon resonance-enhanced photoelectrochemical sensor for detection of an organophosphate pesticide chlorpyrifos. MRS Communications. Vol.8, No.1 (2018), 107-112. doi:10.1557/mrc.2017.131 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/46088
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Title
Surface plasmon resonance-enhanced photoelectrochemical sensor for detection of an organophosphate pesticide chlorpyrifos
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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.