Next Article in Journal
Controlling the Transverse Magneto-Optical Kerr Effect in Cr/NiFe Bilayer Thin Films by Changing the Thicknesses of the Cr Layer
Previous Article in Journal
A SnO2/CeO2 Nano-Composite Catalyst for Alizarin Dye Removal from Aqueous Solutions
Open AccessReview

An Overview of the Recent Progress in Modifications of Carbon Nanotubes for Hydrogen Adsorption

Division for Experimental Physics, School of Nuclear Science & Engineering, National Research Tomsk Polytechnic University, Lenin Ave. 43, Tomsk 634034, Russia
*
Author to whom correspondence should be addressed.
Nanomaterials 2020, 10(2), 255; https://doi.org/10.3390/nano10020255
Received: 15 January 2020 / Revised: 28 January 2020 / Accepted: 30 January 2020 / Published: 1 February 2020
(This article belongs to the Section Synthesis, Interfaces and Nanostructures)
Many researchers have carried out experimental research and theoretical analysis on hydrogen storage in carbon nanotubes (CNTs), but the results are very inconsistent. The present paper reviewed recent progress in improving the hydrogen storage properties of CNTs by various modifications and analyzed the hydrogen storage mechanism of CNTs. It is certain that the hydrogen storage in CNTs is the result of the combined action of physisorption and chemisorption. However, H2 adsorption on metal-functionalized CNTs still lacks a consistent theory. In the future, the research of CNTs for hydrogen adsorption should be developed in the following three directions: (1) A detailed study of the optimum number of metal atoms without aggregation on CNT should be performed, at the same time suitable preparation methods for realizing controllable doping site and doped configurations should be devised; (2) The material synthesis, purification, and activation methods have to be optimized; (3) Active sites, molecular configurations, effectively accessible surface area, pore size, surface topology, chemical composition of the surface, applied pressure and temperature, defects and dopant, which are some of the important factors that strongly affect the hydrogen adsorption in CNTs, should be better understood.
Keywords: hydrogen; modification of CNTs; physisorption; chemisorption; activation; spillover mechanism; Kubas interaction hydrogen; modification of CNTs; physisorption; chemisorption; activation; spillover mechanism; Kubas interaction
MDPI and ACS Style

Lyu, J.; Kudiiarov, V.; Lider, A. An Overview of the Recent Progress in Modifications of Carbon Nanotubes for Hydrogen Adsorption. Nanomaterials 2020, 10, 255.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop