期刊
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
卷 14, 期 10, 页码 9552-9561出版社
ESG
DOI: 10.20964/2019.10.03
关键词
Sulfamethoxazole; NiO nanoparticle; Biosynthesis; Electrochemical Sensor
In this research, we describe a new type of sulfamethoxazole electrochemical sensor based on a carbon paste electrode (CPE) modified with NiO nanoparticle (NiO-NPs) and 1-methyl-3-octylimidazolium tetrafluoroborate (1M3OIMZTFB). The NiO nanoparticle was biosynthesized with a diameter of similar to 18.0 nm by Mentha aquatic extract and characterized by AFM, FESEM, XRD and EDS methods. The oxidation peak of sulfamethoxazole was recorded at +1130 mV and +995 mV at surface of CPE and 1M3OIMZTFB/NiO-NPs/CPE. Meanwhile, the oxidation signal of sulfamethoxazole was improved by similar to 20.32 times compared to unmodified CPE. The 1M3OIMZTFB/NiO-NPs/CPE exhibited good catalytic activity toward sulfamethoxazole with a dynamic range 0.003-400.0 mu M and limit of detection 1.0 nM. The 1M3OIMZTFB/NiO-NPs/CPE was used as useful tool for determination of sulfamethoxazole in real samples.
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