Journal
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
Volume 164, Issue 12, Pages B534-B541Publisher
ELECTROCHEMICAL SOC INC
DOI: 10.1149/2.0901712jes
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Funding
- Ministry of Science and Technology of Taiwan [MOST 105-2221-E-002-047-MY3]
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This paper reports prototype atmospheric-pressure plasma jet (APPJ)-processed reduced graphene oxide (rGO)-modified carbon electrochemical sensors integrated with 3D-printed microfluidic channels. Dopamine (DA) solutions with various concentrations are used for the model test. The APPJ-calcined rGO coating significantly enhances the electrochemical signal for DA detection by 18 times. X-ray photoelectron spectroscopy (XPS) shows that APPJ-calcined rGO-modified carbon electrodes have more oxygen-containing surface functional groups, leading to the enhanced electrochemical reactivity. The cyclic voltammetry (CV) curves of solutions with various DA concentrations are well-distinguishable in the presence of uric acid (UA) and ascorbic acid (AA) as interfering agents. (C) 2017 The Electrochemical Society. All rights reserved.
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