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Electrocatalytic Degradation of Rhodamine B Using Li-Doped ZnO Nanoparticles: Novel Approach

Ganesh, V and Ravi Kumar, B and AlAbdulaal, TH and Yahia, IS and Abdel-wahab, MS and Ade, R and Hussien, MSA and Keshway, M (2023) Electrocatalytic Degradation of Rhodamine B Using Li-Doped ZnO Nanoparticles: Novel Approach. In: Materials, 16 (3).

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Official URL: https://doi.org/10.3390/ma16031177


In this paper, we discuss the preparation of Li-doped ZnO nanostructures through combustion and report on their structural, morphological, optical, and electrocatalysis properties. X-ray diffraction analyses show that the samples have a structure crystallized into the usual hexagonal wurtzite ZnO structure according to the P63mc space group. The scanning electron microscope images conceal all samples’ nanosphere bundles and aggregates. The reflectance spectra analysis showed that the direct bandgap values varied from 3.273 eV (for pure ZnO, i.e., ZnL1) to 3.256 eV (for high Li-doped ZnO). The measured capacitance concerning frequency has estimated the variation of dielectric constant, dielectric loss, and AC conductivity against AC electric field frequency. The dielectric constant variations and AC conductivity are analyzed and discussed by well-known models such as Koop’s phenomenological theory and Jonscher’s law. The Raman spectra have been recorded and examined for the prepared samples. Rhodamine B was electro-catalytically degraded in all prepared samples, with the fastest time for ZnL5 being 3 min.

Item Type: Journal Article
Publication: Materials
Publisher: MDPI
Additional Information: The copyright for this article belongs to the Authors.
Keywords: Dielectric losses; Electric fields; Electrocatalysis; Lithium compounds; Scanning electron microscopy; X ray diffraction analysis; Zinc sulfide; ZnO nanoparticles, A.C conductivity; Doped zinc oxides; Doped ZnO; Electrocatalyse degradation; Electrocatalytic degradations; Li-doped zinc oxide; Optical-; Optical/electrical property; Rhodamine-B; ZnO nanoparticles, II-VI semiconductors
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 25 Feb 2023 07:48
Last Modified: 25 Feb 2023 07:48
URI: https://eprints.iisc.ac.in/id/eprint/80679

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