Synthesis and characterization of SnO2/rGO nanocomposite for an efficient photocatalytic degradation of pharmaceutical pollutant: Kinetics, mechanism and recyclability

M. C. Shibu, M. D. Benoy, S. Shanavas, J. Duraimurugan, G. Suresh Kumar, Mohammad Abu Haija, P. Maadeswaran, T. Ahamad, Quyet Van Le, S. M. Alshehri

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

The SnO2 and SnO2/rGO nanostructures were successfully synthesized using the facile hydrothermal synthesis technique. The prepared nanostructures were well studied using different techniques such as XRD, XPS, UV-DRS, FT-IR, EDX, SEM, HR-TEM and analysis. The crystalline nature of SnO2 and SnO2/rGO was confirmed by the XRD technique. The formation of highly pure SnO2 and SnO2/rGO nanostructures was confirmed by EDX analysis. The morphological results show the good agglomeration of several spherical nanoparticles. The optical properties were studied through the UV-DRS technique and the bandgap energies of SnO2 and SnO2/rGO are estimated to be 3.12 eV and 2.71 eV, respectively. The photocatalytic degradation percentage in presence of SnO2 and SnO2/rGO against RhB was found to be 96% and 98%, respectively. The degradation of TTC molecules was estimated as 90% and 88% with SnO2/rGO and SnO2, respectively. The degradation of both RhB and TTC molecules was well suited with the pseudo-first-order kinetics. The results of successive experiments clearly show the enhancement in the photocatalytic properties in the SnO2/rGO nanostructures.

Original languageBritish English
Article number136105
JournalChemosphere
Volume307
DOIs
StatePublished - Nov 2022

Keywords

  • Degradation
  • Organic pollutant
  • Photocatalyst
  • Visible-light

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