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Most Cited
Facile Hydrothermally Synthesized 2D-Based rGO/NiO Nanohybrid for Environmental Remediation of Malachite Green Pollutant
Abstract
This study produced rGO/NiO nanohybrid through a simple hydrothermal strategy for photocatalytic degradation of noxious
malachite green (MG) pollutants. Nanocomposites’ chemical structure was verifi ed by X-ray diff raction (XRD), ultraviolet
visible spectroscopy (UV–Vis. Spectroscopy), X-ray photoelectron spectroscopy (XPS) analysis and Raman spectra. Bandgap
narrowing of nickel oxide was observed by UV–Visible spectroscopy after its integration with rGO. In terms of photocatalytic
effi ciency, rGO/NiO nanocomposites show remarkable effi ciency (96.15%) in degrading malachite green dye than NiO
(81.73%) under 120 min. rGO/NiO nanocomposites exhibit a 0.006 min −1 rate constant, which is 2% greater than bare nickel
oxide. The scavenging analysis demonstrated that hydroxyl radicals and superoxide ion play a vital role in photodegradation.
The photocatalyst’s repeatability was determined through a cyclic test. The remarkable photocatalytic effi ciency was obtained
due to the synergetic behavior of rGO and NiO. rGO provided a greater surface area exhibiting greater number of active
zones responsible for the adsorption of electrolyte ions. This rGO/NiO nanohybrid has been employed as a photocatalyst in
effi ciently removing noxious pollutants from wastewater.
