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Article

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

by
Vanga Ganesh
1,*,
Bandapelli Ravi Kumar
2,
Thekrayat. H. AlAbdulaal
1,
Ibrahim. S. Yahia
1,3,4,*,
Mohamed Sh. Abdel-wahab
5,
Ramesh Ade
6,
Mai S. A. Hussien
7 and
Mohamed Keshway
8
1
Laboratory of Nano-Smart Materials for Science and Technology (LNSMST), Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 62529, Saudi Arabia
2
Department of Physics, Indian Institute of Science, Bangalore 560012, India
3
Nanoscience Laboratory for Environmental and Bio-Medical Applications (NLEBA), Metallurgical Lab.1., Department of Physics, Faculty of Education, Ain Shams University, Roxy, Cairo 11757, Egypt
4
Research Center for Advanced Materials Science (RCAMS), King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia
5
Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences, Beni–Suef University, Beni–Suef 62511, Egypt
6
Department of Physics, Koneru Lakshmaiah Education Foundation, R V S Nagar, Aziz Nagar (P.O.), Moinabad Road, Hyderabad 500075, India
7
Department of Chemistry, Faculty of Education, Ain Shams University, Roxy, Cairo 11757, Egypt
8
Egyptian Petroleum Research Institute, 1 Ahmed El-Zomor Street, Nasr City 11727, Egypt
*
Authors to whom correspondence should be addressed.
Materials 2023, 16(3), 1177; https://doi.org/10.3390/ma16031177
Submission received: 8 December 2022 / Revised: 8 January 2023 / Accepted: 11 January 2023 / Published: 30 January 2023
(This article belongs to the Special Issue New Advances in Low-Dimensional Materials and Nanostructures II)
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Abstract

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.
Keywords: Li-doped zinc oxide; nanoparticles; optical/electrical properties; electrocatalysis degradation Li-doped zinc oxide; nanoparticles; optical/electrical properties; electrocatalysis degradation

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MDPI and ACS Style

Ganesh, V.; Ravi Kumar, B.; AlAbdulaal, T.H.; Yahia, I.S.; Abdel-wahab, M.S.; Ade, R.; Hussien, M.S.A.; Keshway, M. Electrocatalytic Degradation of Rhodamine B Using Li-Doped ZnO Nanoparticles: Novel Approach. Materials 2023, 16, 1177. https://doi.org/10.3390/ma16031177

AMA Style

Ganesh V, Ravi Kumar B, AlAbdulaal TH, Yahia IS, Abdel-wahab MS, Ade R, Hussien MSA, Keshway M. Electrocatalytic Degradation of Rhodamine B Using Li-Doped ZnO Nanoparticles: Novel Approach. Materials. 2023; 16(3):1177. https://doi.org/10.3390/ma16031177

Chicago/Turabian Style

Ganesh, Vanga, Bandapelli Ravi Kumar, Thekrayat. H. AlAbdulaal, Ibrahim. S. Yahia, Mohamed Sh. Abdel-wahab, Ramesh Ade, Mai S. A. Hussien, and Mohamed Keshway. 2023. "Electrocatalytic Degradation of Rhodamine B Using Li-Doped ZnO Nanoparticles: Novel Approach" Materials 16, no. 3: 1177. https://doi.org/10.3390/ma16031177

APA Style

Ganesh, V., Ravi Kumar, B., AlAbdulaal, T. H., Yahia, I. S., Abdel-wahab, M. S., Ade, R., Hussien, M. S. A., & Keshway, M. (2023). Electrocatalytic Degradation of Rhodamine B Using Li-Doped ZnO Nanoparticles: Novel Approach. Materials, 16(3), 1177. https://doi.org/10.3390/ma16031177

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