Synergistic photocatalysis of VO2-A/g-C3N4 composites for efficient degradation of anionic and cationic dyes: Towards a sustainable environmental solution

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dc.contributor.authorSharma, Anshu
dc.date.accessioned2026-03-23T06:00:21Z
dc.date.available2026-03-23T06:00:21Z
dc.date.issued2025
dc.description.abstractDue to the outflow of dye effluent from numerous industrial operations, dye pollution is a severe environmental issue. Because of its efficiency and environmental friendliness, photocatalytic degradation is a technology promising for treating dye pollutants. This study used a simple hydrothermal process to synthesise VO2-A/g-C3N4 nanocomposite and its photocatalytic activity for the breakdown of anionic dyes (Xylenol Orange (XO, Rose Bengal (RB)) and cationic dyes (Crystal Violet (CV), Auramine O (AO)) and Mix dyes (1:1 mixture of anionic and cationic dyes) were assessed. XRD, XPS, SEM, FTIR, Photoluminescence, TEM, UV-DRS and BET analysis were used to characterize the nanocomposite.SEM and TEM analyses revealed a distinct morphology of the VAG-4 nanocomposite, with small, irregular VO2-A nanoparticles dispersed and wrapped around the g-C3N4 surface. UV-DRS analysis, using the Tauc relation, indicated that VO2-A incorporation shifted the absorption edge to longer wavelengths, with VAG-4 showing a peak at 487 nm (1.91 eV). BET analysis of VAG-4 shows a specific surface area of 47.1 m2/g, a pore volume of 0.2125 cm3/g, and an average pore size of 27.9 nm, supporting its potential for effective photocatalytic applications. We assessed the photocatalytic activity ofVO2-A/g-C3N4 nanocomposite for the degradation of the anionic dyes (RB, XO), cationic dyes (AO, CV) and Mix dyes. The results demonstrated that the VAG-4 nanocomposite with degradation percentages of RB (83.5 %), XO (75.5 %), AO (73.4 %), and CV (78.2 %) exhibited more enhanced photocatalytic activity than the individual precursors. The nanocomposite’s outstanding photocatalytic activity suggests that it has the potential for practical appli cations in environmental cleanup.
dc.identifier.urihttp://cuh.ndl.gov.in/handle/123456789/1800
dc.language.isoen
dc.titleSynergistic photocatalysis of VO2-A/g-C3N4 composites for efficient degradation of anionic and cationic dyes: Towards a sustainable environmental solution
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