A review on surface functionalization of carbon nanotubes: methods and applications

• Published in: Discover nano Vol. 18; no. 1; p. 12
• Main Author: Alosime, Eid M.
• Format: Journal Article
• Language: English
• Published: New York Springer US 13.02.2023; Springer Nature B.V; SpringerOpen
• Subjects: Carbon; Carbon monoxide; Carbon nanotubes; Catalyst; Catalysts; Chemistry and Materials Science; Composite materials; Composites; Electric properties; Electrodes; Fuel cell; Fuel cells; Fuel technology; Gamma irradiation; Graphite; Hydrocarbons; Irradiation; Materials Science; Metal ions; Methanol; Methods; Molecular Medicine; Multi wall carbon nanotubes; Nanoalloys; Nanochemistry; Nanoparticles; Nanoscale Science and Technology; Nanotechnology; Nanotechnology and Microengineering; Nanotubes; Oxidation; Polymers; Porous materials; Radiolytic functionalization; Review; Ruthenium; Solvents; Transmission electron microscopy; X-ray diffraction; γ Radiation; γ-irradiation; Carbon nanotubes; Radiolytic functionalization; Composites; Catalyst; irradiation; Fuel cell; γ-irradiation
• ISSN: 2731-9229; 1931-7573; 2731-9229; 1556-276X
• DOI: 10.1186/s11671-023-03789-6

In this review , the radiolytic and physical methods that can be used for the functionalization of carbon nanotubes (CNTs) and their applications as a support for fuel cell electrodes are described. Alloy nanoparticles have also been examined. For example, Pt–Ru nanoparticles were deposited onto a functionalized multiwalled carbon nanotube (MWNT) composite by reducing metal ions (e.g., Pt4+ and Ru3+) here using γ-irradiation and, hence, creating Pt–Ru/MWNT catalysts. The morphology, size, and composition of these Pt–Ru/MWNT catalysts were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), and elemental analysis, respectively. The efficiency of the Pt–Ru/MWNT catalyst was examined for use in the oxidation of carbon monoxide (CO) and methanol. The results of stripping voltammetry for the adsorbed CO on the Pt–Ru/MWNT catalyst electrodes indicated that CO oxidation was energetically favorable at these electrodes. Thus, Pt–Ru/MWNT catalysts were found to be suitable for electrode assembly in direct methanol fuel cells.