A Comparative Study on Voltammetric Behavior of Dopamine at Glassy Carbon Electrode and PANI/MoS₂-Modified Glassy Carbon Electrode

Recent increase in curiosity regarding behavior of two-dimensional layered materials leads the scientists worldwide to explore various physico-chemical properties of these materials. Promising application of MoS₂ as electrode material for various electrochemical devices prompted our group to investigate and compare the electrochemical nature of bare glassy carbon electrode with that of PANI/ MoS₂ modified glassy carbon electrode. PANI is preferred over other materials in electrochemical applications owing to its unique properties as conductive polymer. In this paper, a comparison of the voltammetric response of dopamine has been explored on both the electrodes. The study indicates that the voltammetric response is slightly better in case of modified glassy carbon electrode in comparison to bare electrode. Study also shows that the effect of adsorption is also observable on both the electrodes from concentration of 0.4 µM onwards. The outcome of this paper holds significant implications for a wide range of electroanalytical applications, biomedical sensing and other chemical analysis.