Exploring the Electrocatalytic Edge Plane Activity of Screen Printed Carbon Electrode and Various Carbonaceous Materials towards the Catecholic Derivatives

This work mainly concentrates the edge plane activity of screen printed carbon electrode (SPCE) toward the electrocatalysis of catecholic derivatives such as catechol (CC), caffeic acid (CA), dopamine (DA) and hydroquinone (HQ). And also, the activity was compared with various types of carbon materi...

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Bibliographic Details
Published in:Journal of the Electrochemical Society 2018, Vol.165 (14), p.H969-H978
Main Authors: Karikalan, Natarajan, Sundaresan, Periyasamy, Chen, Shen-Ming, Karthik, Raj
Format: Article
Language:English
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Summary:This work mainly concentrates the edge plane activity of screen printed carbon electrode (SPCE) toward the electrocatalysis of catecholic derivatives such as catechol (CC), caffeic acid (CA), dopamine (DA) and hydroquinone (HQ). And also, the activity was compared with various types of carbon materials such as carbon nanotube (CNT), graphene oxide (GO) and graphite (GR). It is found that the pretreated carbon materials are having more edge planes and exhibited a high electrocatalytic activity than non-pretreated carbon materials. Therefore, these carbon materials are pretreated by chemical or electrochemical treatments. Especially, the pretreated SPCE showed the appreciable electrocatalytic behavior to the sensitive determination of CC, CA, DA and HQ. Mainly, the electrocatalytic activity of the pretreated SPCE arose from oxygen functionalities on the edge plane active sites. However, other pretreated carbon materials exhibited different electrocatalytic behavior with catecholic derivatives. Therefore, this pretreated SPCE was directly applied to the determination of HQ, CC, CA and DA, wherein the CC, CA and DA interfered with each other because of their similar catecholic functional groups. In contrast, the individual determinations exhibited good sensitivity, stability and reproducibility. Thus, we have also investigated the interference effects of those molecules using a table analysis.
ISSN:0013-4651
1945-7111
DOI:10.1149/2.1081814jes