| Autor: |
Fallatah, Ahmed M., Aman, Salma, Farid, Hafiz Muhammad Tahir |
| Zdroj: |
Korean Journal of Chemical Engineering; Feb2024, Vol. 41 Issue 2, p503-513, 11p |
| Abstrakt: |
This study produced rGO/NiO nanohybrid through a simple hydrothermal strategy for photocatalytic degradation of noxious malachite green (MG) pollutants. Nanocomposites' chemical structure was verified by X-ray diffraction (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 efficiency, rGO/NiO nanocomposites show remarkable efficiency (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 efficiency 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 efficiently removing noxious pollutants from wastewater. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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