期刊
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
卷 13, 期 11, 页码 10809-10820出版社
ESG
DOI: 10.20964/2018.11.59
关键词
Binary metal oxide; Ginger-like; Barium molybdate; Neurotransmitter; Dopamine; Electrochemical sensor
资金
- Ministry of Science and Technology, Taiwan [MOST106-2221-E-182-021]
In this work, we have report a novel electrochemical sensor for the selective detection of dopamine (DA) based on ginger-like morphology of barium molybdate (BaMoO4; BaM) modified screen printed carbon electrode (SPCE). The ginger-like BaM was prepared through a simple co-precipitation technique and its physiochemical properties were systematically investigated by various analytical and spectroscopic techniques such as X-ray diffraction (XRD), Raman, field emission-scanning electron microscopy (FE-SEM) and energy-dispersive X-ray spectroscopy (EDX). Furthermore, the as-prepared ginger-like BaM was effectively investigated for the sensitive and selective electrochemical determination of DA. The ginger-like BaM/SPCE shows a reversible electrochemical behavior with superior current response for DA detection. The BaM catalyst played a significant role to electrochemical detection of DA, as a results very low detection limit (0.021 mu M), wide linear response range (0.1-266 mu M), well sensitivity (0.35 mu A mu M(-1)cm(-2)) and good selectivity in the presence of common metal ions and biological compounds. This study provides a novel idea for the fabrication of binary metal oxides and their potential application in electrochemical sensor and biosensor.
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