The use of solar-driven semiconductor photocatalysis to solve energy and environmental
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photocatalysts have been developed subsequently to fulfill the requirements of
photocatalysis.Since graphene was discovered, materials based on graphene have garnered
considerable interest. The aloe-vera derived (ADG)/nickel oxide (NiO) nanocomposite is a
notable example of a graphene derivative.The uniform structure of graphene fibre is
altered by nickel oxide(NiO) which tunes its band gap and causes electronic arrangements
within graphene that is requiste for photocatalysis. Herein, we have used a one-pot
chemical approach to design aloe vera-derived graphene/nickel oxide nanocomposites
(ADG/NiO), a novel photocatalyst that show high molar absorbance, suitable band gap of
2.68 eV, good photo-stability and reusability. Under solar light irradiation, the ADG/NiO
nanocomposite exhibited remarkable photocatalytic activity. It effectively fixed nitrogen
into ammonia with an apparent quantum efficiency(AQE) of 0.64% and efficiently
photo-oxidized dyes. Specifically, it achieved a dye removal efficiency of 94.2% for
methylene blue (MB) and 86.41% for Eosin-B, converting them into harmless inorganic
species like CO2 and H2O within just 90 minutes. The cost-effective
ADG/NiO nanocomposite shows significant potential as a photocatalyst activated by solar
light for practical applications such as the selective generation of NH3 and
the purification of industrial wastewater containing dyes.
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