Fabrication of NiO/RGO nanocomposite for enhancing photocatalytic performance through degradation of RhB

In this study, NiO/RGO nanocomposites have been synthesized by a facile hydrothermal method. The chemical structure of nanocomposites was validated through X-Ray diffraction (XRD), Raman spectra, and X-Ray photoelectron spectroscopy analysis. Field Emission Scanning Electron spectroscopy (FESEM) and...

Full description

Saved in:
Bibliographic Details
Published in:The Journal of physics and chemistry of solids 2023-05, Vol.176, p.111255, Article 111255
Main Authors: Vivek, P., Sivakumar, R., Selva Esakki, E., Deivanayaki, S.
Format: Article
Language:English
Subjects:
Hydrothermal technique
NiO/RGO nanocomposites
Photocatalysis
RhB dye degradation
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this study, NiO/RGO nanocomposites have been synthesized by a facile hydrothermal method. The chemical structure of nanocomposites was validated through X-Ray diffraction (XRD), Raman spectra, and X-Ray photoelectron spectroscopy analysis. Field Emission Scanning Electron spectroscopy (FESEM) and High-Resolution Transmission Microscopy (HRTEM) were used to investigate the morphological investigations. The bandgap of NiO was reduced after incorporation with RGO, revealed by UV-DRS spectroscopy. The NiO/RGO nanocomposites show better photocatalytic performance for degrading RhB dye. The NiO/RGO nanocomposites display the highest rate constant of 0.015871 min−1, which is 1.4 times higher than NiO. The Scavenging test confirmed that •OH radicals are involved in the photodegradation process. The cyclic test validated the photocatalyst's stability. This NiO/RGO nanocomposite has proven to be an excellent catalyst for eliminating organic pollutants from wastewater. •A novel NiO/RGO nanocomposite synthesized by a hydrothermal method.•The NiO/RGO nanocomposite exhibited higher photocatalytic activity than pristine NiO under UV light irradiation.•The photocatalytic degradation efficiency of the fabricated nanocomposites showed a high potential for RhB dye degradation (95.4%) Compared to pure NiO (86%) under UV light irradiation.•The scavenger test suggested that OH radicals participated in the RhB dye degradation process.•Predominantly, NiO/RGO nanocomposite could be an effective photocatalyst for removing various organic pollutants from wastewater.
ISSN:0022-3697
1879-2553
DOI:10.1016/j.jpcs.2023.111255