Electrochemical Deposition of Reduced Graphene Oxide Decorated with Silver and Nickel Oxide Nanoparticles for Quantification of Ascorbic Acid in Bottled Fruit Juice and Vitamin C Tablet

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Because of its simplicity of evaluation, ability to detect the lowest quantities, and convenience of operation, electrochemical determination of ascorbic acid is gaining popularity. The high sensitivity, selectivity, and low cost, nanosensors have gained enourmous attention in recent years for the detection of active pharmacological compounds and food pollutants. Ni and Ni-containing compounds have a favorable affinity for a number of organic functional groups such as -thio, -hydroxyl, -carboxyl, and -amine. However, its poor conductivity hinders its electrochemical performance. Hence, the procedures for improving the conductivity of metal oxides that are incredibly good studies query to meet the desired level of detection. We devised a straightforward method for concurrently synthesizing silver and nickel oxide nanoparticles on reduced graphene oxide using electrochemical deposition method on a glassy carbon electrode (GCE). The electrodeposited materials were scratched from GCE and characterized for Raman, SEM/EDS, EIS, and XPS. The materials produced after deposition were examined also for Ascorbic Acid (AA) detection in bottled fruit juice and Vitamin C tablets yielded 0.457 μM limits of quantification and 100.61% and 99.40% average recoveries, respectively.

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