N, S-Codoped TiO2/Fe2O3 Heterostructure Assemblies for Electrochemical Degradation of Crystal Violet Dye

Abstract

<em>In contemporary research, “Heterostructure" assemblies play an important role in energy conversion systems, wherein the composite assemblies facilitate faster charge carrier transport across the material interfaces. The improved/enhanced efficiency metrics in these systems (electro/photo-electrochemical processes/devices) is due to synergistic interaction and synchronized charge transport across material interfaces. Herein, we report Type-I Heterostructure consists of N, S doped TiO_2, and Fe₂O₃ for electrochemical crystal violet dye degradation studies. Synthesized N-S codoped TiO₂/Fe₂O₃composite heterostructured assemblies were fabricated on Titanium (Ti) substrate and used for electrochemical analysis. Complete decolorization was achieved with </em><em>all the fabricated electrodes and a higher rate of degradation was achieved with the composite electrode</em><em> (Ti/TiO₂/Fe₂O₃) in comparison to individual electrodes (bare Ti, Ti/TiO₂, Ti/Fe₂O₃). Further, <br /> a probabilistic mechanism of degradation is proposed in support of the hypothesis. </em><em>The outcomes of the present work will have a profound effect on doped semiconductor heterostructure assemblies in the degradation of complex dye molecules of industrial outlets.</em>