Green Synthesis of Graphene-Based Ternary Composites for Non-Enzymatic Glucose Sensor

Ling, Yeou Ying (2020) Green Synthesis of Graphene-Based Ternary Composites for Non-Enzymatic Glucose Sensor. Final Year Project (Bachelor), Tunku Abdul Rahman University College.

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Abstract

In this study, graphene-copper oxide-molybdenum disulphide composite materials were prepared via green and facile hydrothermal synthesis method and evaluated as non-enzymatic glucose sensor electrodes. The morphology and structure of the composite were characterized by using Scanning Electron Microscopy (SEM), Raman spectroscopy, X-Ray Diffraction (XRD), Energy-Dispersive X-ray Spectroscopy (EDX). The electrochemical performances of the composite were evaluated by cyclic voltammetry (CV). The electrochemical results show that the performance of composite electrodes was enhanced. In cyclic voltammetry test, there are at least 50 % of enhancement in current response of each peak after dopant of copper oxide into binary composite, RGO/MoS2 and form ternary composite RGO/CuO/MoS2. After dopant of molybdenum disulphide, the main enhancement was focusing from 0 to 1 V which bring 67.17 % of enhancement in cathodic peak at 0.8 V. At least 62 % and 39 % of enhancement in current response of maximum peak by comparing ternary composite, RGO/CuO/MoS2 with individual materials and binary composites respectively.