Preparation, Characterization, and Electrochemical Performance of the Hematite/Oxidized Multi-Walled Carbon Nanotubes Nanocomposite

Hadeel M Banbela; Laila M Alharbi; Reema H Al-Dahiri; Mariusz Jaremko; Mohamed Abdel Salam

doi:10.3390/molecules27092708

Preparation, Characterization, and Electrochemical Performance of the Hematite/Oxidized Multi-Walled Carbon Nanotubes Nanocomposite

Molecules. 2022 Apr 22;27(9):2708. doi: 10.3390/molecules27092708.

Authors

Hadeel M Banbela^{1

2}, Laila M Alharbi¹, Reema H Al-Dahiri³, Mariusz Jaremko⁴, Mohamed Abdel Salam¹

Affiliations

¹ Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80200, Jeddah 21589, Saudi Arabia.
² Department of Chemistry, College of Science and Arts at Khulis, University of Jeddah, P.O. Box 355, Jeddah 21959, Saudi Arabia.
³ Department of Chemistry, College of Science, University of Jeddah, P.O. Box 34, Jeddah 21959, Saudi Arabia.
⁴ Smart-Health Initiative (SHI), Red Sea Research Center (RSRC), Biological and Environmental Science and Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), P.O. Box 4700, Thuwal 23955-6900, Saudi Arabia.

Abstract

In this research work, a hematite (α-Fe₂O₃) nanoparticle was prepared and then mixed with oxidized multi-walled carbon nanotubes (O-MWCNT) to form a stable suspension of an α-Fe₂O₃/O-MWCNTs nanocomposite. Different characterization techniques were used to explore the chemical and physical properties of the α-Fe₂O₃/O-MWCNTs nanocomposite, including XRD, FT-IR, UV-Vis, and SEM. The results revealed the successful formation of the α-Fe₂O₃ nanoparticles, and the oxidation of the MWCNT, as well as the formation of stable α-Fe₂O₃/O-MWCNTs nanocomposite. The electrochemical behaviour of the α-Fe₂O₃/O-MWCNTs nanocomposite was investigated using cyclic voltammetry (CV) and linear sweep voltammetry (LSV), and the results revealed that modification of α-Fe₂O₃ nanoparticles with O-MWCNTs greatly enhanced electrochemical performance and capacitive behaviour, as well as cycling stability.

Keywords: MWCNT; capacitive behaviour; electrochemical performance; hematite; nanoparticle.

MeSH terms

Electrochemical Techniques / methods
Ferric Compounds
Nanocomposites* / chemistry
Nanotubes, Carbon* / chemistry
Spectroscopy, Fourier Transform Infrared

Substances

Ferric Compounds
Nanotubes, Carbon
ferric oxide