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Vol. 33 No. 2 (2021): Vol 33 Issue 2

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Synthesis, Characterization, Photocatalytic and Electrochemical Studies of Reduced Graphene Oxide Doped Nickel Oxide Nanocomposites

https://doi.org/10.14233/ajchem.2021.22979
Venkatachalam Manik
Department of Chemistry, Annamalai University, Annamalai Nagar-608002, India
Ramakrishnan Elancheran
Department of Chemistry, Annamalai University, Annamalai Nagar-608002, India
Palanisamy Revathi
Department of Chemistry, Annamalai University, Annamalai Nagar-608002, India
Umapathy Vanitha
Department of Chemistry, Annamalai University, Annamalai Nagar-608002, India
Palani Suganya
Department of Chemistry, Annamalai University, Annamalai Nagar-608002, India
Kuppusamy Krishnasamy
Department of Chemistry, Annamalai University, Annamalai Nagar-608002, India

Corresponding Author(s) : Kuppusamy Krishnasamy

krishnasamybala56@gmail.com

Asian Journal of Chemistry, Vol. 33 No. 2 (2021): Vol 33 Issue 2

Abstract

Elimination of organic pollutants from waste waters under the sunlight irradiation is a venerable challenge in the fields of environmental and materials science. This work aims to the fabrication of novel self-assembled, controlled rGO@NiO nanocomposite using eco-friendly simple co-precipitation method. The crystallite size, morphology and optical properties of the rGO, NiO and rGO@NiO were characterized using TG/DTA, FTIR, UV, XRD, SEM with EDAX and TEM techniques. The optical bandgap of the pure NiO, rGO and rGO@NiO nanocomposites was estimated as 3.75, 5.43 and 3.64 eV, respectively. Hence rGO@NiO nanocomposite might be considered as a semi-conductor and can be utilized as a photocatalyst. The photocatalytic activity of prepared rGO@NiO nanocomposite was evaluated by using rhodamine B and methyl violet dyes. The degradation results revealed that almost 90% of dye degradation is carried out within a period of 60 min. The cyclic voltammetry studies indicated that the prepared rGO@NiO nanomaterials exhibited appreciable super capacitance value (233 F g-1) at a current density of 1 A g-1.

Keywords

Photocatalytic Supercapacitor Reduced graphene oxide Nickel oxide Co-precipitation method
Manik, V., Elancheran, R., Revathi, P., Vanitha, U., Suganya, P., & Krishnasamy, K. (2021). Synthesis, Characterization, Photocatalytic and Electrochemical Studies of Reduced Graphene Oxide Doped Nickel Oxide Nanocomposites. Asian Journal of Chemistry, 33(2), 411–422. https://doi.org/10.14233/ajchem.2021.22979
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