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Evaluation of Photocatalytic and Supercapacitor Potential of Nickel Tungstate Nanoparticles Synthesized by Electrochemical Method

Abstract

The nickel tungstate nanoparticles (NiWO4 NPs) that they were synthesized by the electrochemical method under various reaction states, such as tungstate ions concentration, voltage, temperature, and stirring rate, were studied here. These NPs were characterized using FT-IR, XRD, SEM, and thermal analysis techniques. The application of NiWO4 NPs as an excellent photocatalyst agent was investigated by the degradation of methyl orange (MO) under the illumination of UV radiation. The maximum conversion of MO molecules was reached about 87% after 100 min. Furthermore, electrochemical properties are investigated using cyclic voltammetry (CV), galvanostatic charge-discharge, electrochemical impedance spectroscopy (EIS) and continue cyclic voltammetry (CCV) in 3.0 M H2SO4 as the electrolyte. Electrochemical investigations revealed that NiWO4 electrode had enhanced supercapacitive performance including the specific capacitance of 468 F g-1 at a scan rate of 2 mV s-1. Furthermore, CCV measurement showed that NiWO4 electrode kept 102.2% of its initial capacitance after 4000 cycles.

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Publication details

The article was accepted on 03 Nov 2018 and first published on 05 Nov 2018


Article type: Paper
DOI: 10.1039/C8NJ05297B
Citation: New J. Chem., 2018, Accepted Manuscript
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    Evaluation of Photocatalytic and Supercapacitor Potential of Nickel Tungstate Nanoparticles Synthesized by Electrochemical Method

    S. M. Pourmortazavi, M. Rahimi-Nasrabadi, M. Sadeghpour Karimi and S. Mirsadeghi, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C8NJ05297B

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