Journal ArticleDOI
Hydrogen Storage in Single-Walled Carbon Nanotubes at Room Temperature.
TLDR
In this article, a hydrogen storage capacity of 4.2 weight percent, or a hydrogen to carbon atom ratio of 0.52, was achieved reproducibly at room temperature under a modestly high pressure (about 10 megapascal) for a SWNT sample of about 500 milligram weight that was soaked in hydrochloric acid and then heat-treated in vacuum.Abstract:
Masses of single-walled carbon nanotubes (SWNTs) with a large mean diameter of about 1.85 nanometers, synthesized by a semicontinuous hydrogen arc discharge method, were employed for hydrogen adsorption experiments in their as-prepared and pretreated states. A hydrogen storage capacity of 4.2 weight percent, or a hydrogen to carbon atom ratio of 0.52, was achieved reproducibly at room temperature under a modestly high pressure (about 10 megapascal) for a SWNT sample of about 500 milligram weight that was soaked in hydrochloric acid and then heat-treated in vacuum. Moreover, 78.3 percent of the adsorbed hydrogen (3.3 weight percent) could be released under ambient pressure at room temperature, while the release of the residual stored hydrogen (0.9 weight percent) required some heating of the sample. Because the SWNTs can be easily produced and show reproducible and modestly high hydrogen uptake at room temperature, they show promise as an effective hydrogen storage material.read more
Citations
More filters
Journal ArticleDOI
Environmental applications of carbon-based nanomaterials.
TL;DR: This review critically assesses the contributions of carbon-based nanomaterials to a broad range of environmental applications: sorbents, high-flux membranes, depth filters, antimicrobial agents, environmental sensors, renewable energy technologies, and pollution prevention strategies.
Journal ArticleDOI
Hydrogen storage methods
TL;DR: This paper reviews the various storage methods for hydrogen and highlights their potential for improvement and their physical limitations.
Journal ArticleDOI
Progress and problems in hydrogen storage methods
TL;DR: A technique of hydrogen storage has to meet the DOE criterion for the volumetric and gravimetric density of the stored hydrogen and the reversibility criterion for charging/discharging processes as discussed by the authors.
Journal ArticleDOI
Carbon nanotubes-properties and applications: a review
TL;DR: The carbon nanotube (CNT) represents one of the most unique inventions in the field of nan - otechnology as mentioned in this paper, which makes them useful as fillers in different materials such as polymers, metallic surfaces and ceramics.
Journal ArticleDOI
Sorption of 243Am(III) to multiwall carbon nanotubes.
TL;DR: MWCNTs can be a promising candidate for the preconcentration and solidification of 243Am(III) or its analogue lanthanides and actinides from large volumes of aqueous solution, as required for remediation purposes, and perhaps also as a sorbent for the removal of heavy metal ions from the industry wastewater.
References
More filters
Journal ArticleDOI
Hydrogen Storage in Single-Walled Carbon Nanotubes at Room Temperature
TL;DR: Masses of single-walled carbon nanotubes, synthesized by a semicontinuous hydrogen arc discharge method, were employed for hydrogen adsorption experiments in their as-prepared and pretreated states and show promise as an effective hydrogen storage material.