Indian Journal of Science and Technology
Year: 2021, Volume: 14, Issue: 40, Pages: 3007-3013
Bandita Panda1, Sandip K Dash1,*
1 Department of Zoology, Berhampur University, Berhampur, Ganjam, 760007, Odisha
* Corresponding author email: [email protected]
Received Date:01 September 2021, Accepted Date:13 November 2021, Published Date:29 November 2021
Objectives: Electrochemical fabrication and characterization of a gold-polyaniline/multi-walled carbon nanotubes/manganese dioxide (Au-PANI/MWCNT/MnO2) composite electrode. Methods: The MnO2 nanoparticles (NPs) were prepared by heating 1% Mn(NO3)2.4H2O at 100 0C for 24 h and characterized by using Fourier transform infrared spectroscopy (FTIR) and Ultraviolet/visible (UV/Vis) spectrophotometry. The size and shape of the NPs were determined from the transmission electron microscopic image. MWCNTs were functionalized with carboxyl groups on their sidewalls by sonicating in H2SO4:HNO3 (3:1, v/v) for 12 h at 40 kHz. The functionalization was further confirmed through UV/Vis spectrophotometry. The working Au surface was first activated and then electropolymerized by using 50 μl of 0.005% C6H5NH2 in 01 N HCl followed by electrodeposition with 0.1% each of the c-MWCNTs and manganese oxide NPs through 20 cycles of cyclic voltammetry (-0.2-0.9 mV) at the rate of 20 mV/s. The Au-PANI/MWCNT/MnO2 composite was then characterized by using FTIR spectra and scanning electron microscopy. Findings: An Au-PANI/MWCNT/MnO2 composite electrode was fabricated and characterized. Novelty: The nanocomposite electrode was designed by using screen printed electrode, which is very simple to construct, portable, and economic. The composite can be used to design a sensors or sensor array in future.
Keywords: Electrochemical Fabrication, Manganese Dioxide, Multi-walled Carbon Nanotubes, Nanocomposite Synthesis, Screen Printed Electrodes
© 2021 Panda & Dash. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Published By Indian Society for Education and Environment (iSee)
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