CARBON COATED IRON OXIDE FABRICATION AND ITS ELECTROCHEMICAL SENSING APPLICATION

Abstract

INTRODUCTION: Electrochemical methods of biomolecule sensing is a promising alternative towards conventional methods of estimation, especially in the quantitative analysis of ascorbic acid as they provide a multitude of advantages such as portability, cost effectiveness, delivery of rapid results and non invasiveness.

AIM: To determine the presence and performance of electrochemical sensing ability of carbon coated iron oxide modified electrode towards Ascorbic acid using cyclic voltammetry.

MATERIALS AND METHODS : Solution A consisting of 0.9g of glucose was mixed with 250 ml of water. Solution B consisting of 1.121g of Iron nitrate was mixed with 2 ml of double distilled water. Both solutions were mixed to obtain a third solution which was then subjected to mixing with an ultrasonicator. After which it was transferred to an hydrothermal reactor. The sample was then collected and centrifuged to obtain the final nanoparticle sample, which was subjected to further testing.

RESULTS: Characterization of the nanoparticle sample was conducted using EDX spectrum analysis and XRD analysis from which data confirming the formation of carbon coated iron oxide nanoparticles. The electrochemical sensing capacity of the nanoparticle was analyzed using cyclic voltammetry in comparison to bare carbon electrode. The results show a significant amount of redox activity of ascorbic acid at the corresponding applied voltages.

CONCLUSION: The electrode coated with carbon coated iron oxide nanoparticles were found to have electrochemical sensing activity towards ascorbic acid.