Rapid and efficient green reduction of graphene oxide for outstanding supercapacitors and dye adsorption applications

Sykam, N and Madhavi, V and Rao, GM (2018) Rapid and efficient green reduction of graphene oxide for outstanding supercapacitors and dye adsorption applications. In: Journal of Environmental Chemical Engineering, 6 (2). pp. 3223-3232.

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Abstract

Rapid and efficient green synthesis of reduced graphene oxide (rGO) material has been carried out (by the reduction of graphite oxide (GO)) with tulasi (Holy Basil) green tea extract followed by microwave irradiation technique in 1 min. As prepared rGO material shows outstanding multifunctional performance as electrodes for supercapacitors and efficient adsorption of toxic organic dyes from aqueous solutions. The electrochemical performance of rGO electrode for supercapacitor showed that, it exhibits high specific capacitance of 164.6 F g-1 at a current density of 1 A g-1 under aqueous 1 M H2SO4 electrolyte solution, good rate capability (59.6 retention when the current density increases from 1 to 10 A g-1). After 3000 cycles, the attenuation of the specific capacitance is less than 5, indicating excellent electrochemical stability. Moreover, the maximum adsorption capacity of rGO reaches 416.7 mg/g for malachite green dyes at equilibrium under aqueous solutions.

Item Type:	Journal Article
Publication:	Journal of Environmental Chemical Engineering
Publisher:	Elsevier Ltd
Additional Information:	The copyright for this article belongs to the Elsevier Ltd.
Keywords:	Adsorption; Capacitance; Electrochemical electrodes; Electrolytes; Graphene oxide; Irradiation; Microwave irradiation; Reduction; Solutions, Electrochemical performance; Electrochemical stabilities; Electrolyte solutions; High specific capacitances; Microwave irradiation techniques; Multifunctional performance; Reduced graphene oxides; Reduced graphene oxides (RGO), Supercapacitor
Department/Centre:	Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Date Deposited:	08 Aug 2022 06:53
Last Modified:	08 Aug 2022 06:53
URI:	https://eprints.iisc.ac.in/id/eprint/75595

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