A High-Response Electrochemical As(III) Sensor Using Fe3O4–rGO Nanocomposite Materials
نویسندگان
چکیده
Nowadays, heavy metal ion pollution in water is becoming more and common, especially arsenic, which seriously threatens human health. In this work, we used Fe3O4–rGO nanocomposites to modify a glassy carbon electrode selected square wave voltametric electrochemical detection methods detect trace amounts of arsenic water. Field emission scanning electron microscopy (FESEM) transmission (TEM) showed that Fe3O4 nanoparticles were uniformly distributed on the rGO sheet, with particle size about 20 nm. Raman spectroscopy impedance (EIS) provides higher sensitivity conductive substrates. Under optimized experimental conditions, Fe3O4–rGO-modified electrodes (2.15 µA/ppb) lower limit (1.19 ppb) for arsenic. They also good selectivity, stability, repeatability.
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ژورنال
عنوان ژورنال: Chemosensors
سال: 2021
ISSN: ['2227-9040']
DOI: https://doi.org/10.3390/chemosensors9060150