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Electrodeposition of Pt–Fe(III) Nanoclusters on Graphene Modified Glassy Carbon Electrode for Sensitive Detection of Nitrite

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A novel electrochemical sensor for the detection of nitrite was fabricated by co-deposition of Pt nanoparticles and Fe(III) on reduced graphene oxide (RGO) modified glassy carbon electrode (GCE). Field emission scanning electron microscope (FE-SEM), transmission electron microscopy (TEM), and electrochemical techniques were used to characterize the structure of these nanocomposites. Electrochemical results showed that the Pt–Fe(III)/RGO/GCE exhibited remarkable electrocatalytic activity toward the oxidation of nitrite in phosphate buffer solution (pH 4.0). Under the optimum conditions, the linear range for the detection of nitrite was 4.0 × 10–6 to 2.5 × 10–4 M and a low detection limit of 6.0 × 10–7 M. The proposed method was successfully applied in the detection of nitrite in salt samples.
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Keywords: ELECTROCHEMICAL SENSOR; FE(III); GRAPHENE; NANOCLUSTERS; NITRITE; PT

Document Type: Short Communication

Publication date: April 1, 2015

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  • Nanoscience and Nanotechnology Letters (NNL) is a multidisciplinary peer-reviewed journal consolidating nanoscale research activities in all disciplines of science, engineering and medicine into a single and unique reference source. NNL provides the means for scientists, engineers, medical experts and technocrats to publish original short research articles as communications/letters of important new scientific and technological findings, encompassing the fundamental and applied research in all disciplines of the physical sciences, engineering and medicine.
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