Congo red photomineralization over Co3O4/CoTe common cation nanocomposites
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Due to increasing energy demands and environmental pollution, it is need of the hour to develop some eco-friendly technologies that can overcome these two major issues. Nanotechnology and photocatalysis provide the best solution for the energy crisis and environmental pollution. Here, in this work, we report metal oxide (Co3O4), metal chalcogenide (CoTe) and their nanocomposites (Co3O4/CoTe) to benefit from synergy attributed to their unique electronic properties for the photocatalytic degradation of Congo red dye, which is a major industrial pollutant. The hydrothermally synthesized photocatalysts are further characterized via various techniques including powder X-ray diffraction, scanning electron microscopy coupled with energy dispersive X-ray spectroscopy and UV–Visible diffused reflectance spectroscopy (DRS) which endorse their successful synthesis. Amongst the as-synthesized photocatalysts, the nanocomposites exhibited better photocatalytic activity as compared to their individual counterparts which is hereby attributed to reduced charge recombination, suitable band alignment in the heterostructure as well as to the presence of common cation.
The author (M.F. Ehsan) is grateful to SNS NUST for providing us adequate funds and all the lab facilities to carry out this work.