Add time:08/23/2019         Source:sciencedirect.com

A voltammetric sensor was fabricated for the determination of 2-phenylphenol (2-PP) as a water pollutant. The sensor was prepared by modifying carbon paste electrode (CPE) with a composite of Fe3O4 nanoparticles (Fe3O4-NPs) and ionic liquid (n-hexyl-3-methylimidazolium hexafluorophosphate; (HMPF6)). The Fe3O4-NPs was synthesized by co-precipitation and characterized by FESEM, MAP, AFM and XRD methods. The presence of Fe3O4-NPs and HMPF6 in CPE improved the catalytic activity of the electrode towards the oxidation of 2-PP. The Fe3O4-NPs/HMPF6/CPE displayed two well separated oxidation signals in a solution containing 2-PP and 4-Chlorophenol (cas 106-48-9) (4-CP). A peak separation of 380 mV was obtained, which implies that the sensor can be used for the simultaneous determination of the two water contaminants. The Fe3O4-NPs/HMPF6/CPE displayed a linear dynamic range 0.01–520 μM for 2-PP. The sensor showed good recovery data for the analysis of 2-PP and 4-CL in orange rind, lemon rind and different water samples.

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