Neodymium Doped ZrO2-graphene Oxide Nanocomposites: A Promising Photocatalyst For Photodegradation Of Eosin Y Dye
M. Mzoughi1, 2, William. W. Anku1, Samuel O. B. Oppong1, Sudheesh K. Shukla1, 3*, Eric S. Agorku1, Penny P. Govender1*
1Department of Applied Chemistry, University of Johannesburg, P.O. Box 17011, Doornfontein 2028, Johannesburg, South Africa
2Ecole Nationale Superieure des Ingénieurs en Arts Chimiques et Technologiques, INP-Toulouse, 4, allée Émile-Monso, BP 44362, 31030, Toulouse, France
3Vinoba Bhave Research Institute, Sirsa Road, Saidabad, Allahabad 221508, India
Adv. Mater. Lett., 2016, 7 (12), pp 946-950
DOI: 10.5185/amlett.2016.6497
Publication Date (Web): Oct 12, 2016
Copyright © 2019 VBRI Press
E-mail:sudheeshkshukla@gmail.com, pennyg@uj.ac.za
Purification of industrial wastewater from dyes receiving increasing attentions. The aim of the present manuscript was to fabricate graphene based nanocomposites using a homogeneous and facile approach. Co-precipitation method was used to synthesize zirconium oxide (ZrO2) and neodymium doped ZrO2-graphene oxide (Nd-ZrO2-GO) nanocomposites with varying weight percent concentrations of neodymium to investigate the increasing photocatalytic activity. The Nd-ZrO2-GO catalysts were characterized using X-ray powder diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (SEM), and ultra violet-visible (UV-vis)-spectroscopy to evaluate their optical, morphological and structural properties respectively. The photocatalytic degradation potential of the nanocatalyst was assessed by the degradation of Eosin Y dye in aqueous solution under simulated solar light irradiation. The Nd-ZrO2-GO was observed to have higher photocatalytic degradation potential than the bare ZrO2. The most efficient photocatalyst for the degradation of Eosin Y dye was 0.3 % Nd-ZrO2-GO with about 80 % efficiency within 180 min and a Ka value of 4.19 x 10-3. Nd-ZrO2-GO catalyst would be considered as efficient photocatalyst to degrade the industrial dyes (Eosin Y) avoiding the dreary filtration steps.
Photocatalysis, polymer-metal nanocomposites, graphene oxide, eosin Y, dye degradation, photodegradation.
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