Rathika, G (2024) Surface parametric influences on the photocatalytic behaviour of zinc oxide nanoparticles. Surface parametric influences on the photocatalytic behaviour of zinc oxide nanoparticles, 20 (1). pp. 115-124.

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Abstract

Zinc oxide nanoparticles were chemically synthesised and characterised by UV-DRS
spectroscopy, FTIR, scanning electron microscopy with energy-dispersive X-ray
diffraction, and X-ray powder diffraction. In order to evaluate the impact of the synthesis
process on the structural parameters, Rietveld refinement was done using the GSAS-II
programme on experimentally acquired XRD data. ZnO was found to have a hexagonal
structure with lattice parameters of a = b =3.247 Å; c = 5.205Å and an average size of
about 20-40 nm, as determined by Rietveld refinement of XRD and SEM data. FTIR and
EDX analysis was used to confirm the functional group and elemental composition of ZnO
NPs. The UV-DRS spectra revealed that the synthesised ZnO had an optical band gap of
3.05 eV. Parametric investigations of the surface morphology of ZnO nanostructures were
conducted using the Gwyddion programme. Pseudo-first-order rate kinetics were observed
for the photodegradation of two cationic dyes, MB (87.87%) and RhB (74.79%), in the
presence of UV light.

Item Type: Article
Uncontrolled Keywords: ZnO, Surface parameters, Morphology and DFT studies
Divisions: PSG College of Arts and Science > Department of Chemistry
Depositing User: Dr. B Sivakumar
Date Deposited: 01 Dec 2025 09:52
Last Modified: 01 Dec 2025 09:52
URI: https://ir.psgcas.ac.in/id/eprint/2548

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