Synthesis of phyto-mediated CuO–ZrO2 nanocomposite and investigation of their role as electrode material for supercapacitor and water splitting studies

The present research focused on environmentally benign synthesis of CuO–ZrO 2 nanocomposite using bioactive compounds of A. viridis . Phase analysis of CuO–ZrO 2 using Xray diffraction revealed the crystal size of 30.3 nm. Scanning electron microscope showed spherical-shaped nanoparticles of 88 nm s...

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Bibliographic Details
Published in:Journal of materials research 2023-11, Vol.38 (22), p.4937-4950
Main Authors: Azhar, Sundus, Ahmad, Khuram Shahzad, Abrahams, Isaac, Lin, Wang, Gupta, Ram K., El-marghany, Adel
Format: Article
Language:English
Subjects:
Applied and Technical Physics
Biomaterials
Capacitance
Chemistry and Materials Science
Copper oxides
Electrochemical impedance spectroscopy
Electrode materials
Electrodes
Hydrogen evolution reactions
Inorganic Chemistry
Materials Engineering
Materials research
Materials Science
Nanocomposites
Nanoparticles
Nanotechnology
Supercapacitors
Synthesis
Voltammetry
Water splitting
Zirconium dioxide
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Summary:The present research focused on environmentally benign synthesis of CuO–ZrO 2 nanocomposite using bioactive compounds of A. viridis . Phase analysis of CuO–ZrO 2 using Xray diffraction revealed the crystal size of 30.3 nm. Scanning electron microscope showed spherical-shaped nanoparticles of 88 nm size. The band gap value of 2.25 eV was obtained. The synthesized CuO–ZrO 2 material was further investigated as electrode material for supercapacitor and water splitting studies. Cyclic voltammetry was used to estimate the specific capacitance value of 374.7 F/g, and galvanostatic charge discharge was used to determine the specific capacitance value of 286.3 F/g. Electrochemical impedance spectroscopy (EIS) and linear sweep voltammetry (LSV) were used to conduct HER and OER experiments. Tafel value of 143 mV/dec and overpotential value of 225 mV was recorded for composite by LSV for hydrogen evolution reaction. Graphical abstract
ISSN:0884-2914
2044-5326
DOI:10.1557/s43578-023-01204-5