Publication: Lightweight ITO Electrodes Decorated with Gold Nanostructures for Electrochemical Applications
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Issued Date
2019-11-01
Resource Type
ISSN
15214109
10400397
10400397
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2-s2.0-85068024791
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Mahidol University
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SCOPUS
Bibliographic Citation
Electroanalysis. Vol.31, No.11 (2019), 2095-2102
Suggested Citation
Angkoonna Pringkasemchai, Faegheh Hoshyargar, Benchaporn Lertanantawong, Anthony P. O'Mullane Lightweight ITO Electrodes Decorated with Gold Nanostructures for Electrochemical Applications. Electroanalysis. Vol.31, No.11 (2019), 2095-2102. doi:10.1002/elan.201900152 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/50549
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Title
Lightweight ITO Electrodes Decorated with Gold Nanostructures for Electrochemical Applications
Abstract
© 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim Gold nanostructures were fabricated on a transparent indium tin oxide (ITO) coated PET substrate by an electrodeposition technique from a potassium gold (III) chloride solution for two different types of applications. It was found that the optical transparency of lightweight ITO electrodes could be maintained by depositing isolated gold nanostructures while opening up the use of these electrodes for inner sphere electron reactions, such as hydroquinone oxidation, which are not possible at ITO electrodes. For practical applications the adhesion of gold to the ITO electrode was improved by modifying the ITO surface with 3-mercaptopropyl-trimethoxysilane (MPS). Compared to Au/ITO, the Au/MPS/ITO electrode showed vastly improved electrochemical activity toward various electron transfer reactions when subjected to mechanical stress. The biosensing properties of the Au/MPS/ITO electrode was also investigated by studying the detection of immobilized DNA on the Au/MPS/ITO electrode via electrochemical impedance spectroscopy (EIS).