Abstract
Water pollution, stemming primarily from dye effluent discharge in urban and industrial zones, remains a critical environmental issue. Photocatalysis emerges as a promising eco-friendly, cost-effective, solar-dependent, and recyclable solution. This study synthesizes Ni0.25Re0.75Se2 via a simple Direct Vapour Transport (DVT) technique, exploring the impact of doping on ReSe2's structural, optical, and photocatalytic properties. Characterization techniques (PXRD, FESEM, EDAX, Raman spectroscopy, UV–visible absorbance spectroscopy, XPS) were employed for analysis. Photocatalytic experiments with organic dyes like Methylene Blue (MB), Acridine Orange (AO), Crystal Violet (CV) demonstrated efficient AO dye degradation (95.67 %) in 60 min using Ni0.25Re0.75Se2, showcasing effective catalytic properties under 20W LED bulb. Trapping experiments identified hydroxyl radicals and holes as pivotal for AO dye degradation. Ni0.25Re0.75Se2 exhibited stability under varying pH, non-leaching behavior, and retained efficiency over cycles, showcasing potential for sustained use in industrial wastewater treatment. This research advances sustainable solutions to combat water pollution in urban and industrial environments.
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