Comparative hydrogen uptake study on titanium–MWCNTs composite prepared by two different methods

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Title
Comparative hydrogen uptake study on titanium–MWCNTs composite prepared by two different methods
Author(s)
Rather S.U.; Sang-Woon Hwang
Publication Date
2016-10
Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.41, no.40, pp.18114 - 18120
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Abstract
Hydrogen uptake of a multi-walled carbon nanotubes (MWCNTs) is increased 5- and 25-fold at 298 K and an equilibrium pressure of ∼16 atm, upon addition of a hydrogen spillover catalyst titanium, from 0.43 to 2.0 wt.%. Two important preparation methods; high-energy ball milling and sputtering method is utilized to synthesize Ti–MWCNTs composite. Thermogravimetric analysis suggests decoration of Ti on MWCNTs is ∼3.5 wt.% and TEM demonstrates nanostructural characterization of both pristine and Ti–MWCNTs. Enhancement of hydrogen uptake of sputtered sample is attributed to the efficient spillover mechanism due to well-arranged decoration of titanium nanoparticles on the outer surface of MWCNTs compared to milled sample. Adsorption and re-adsorption of sputtered composite indicate inconsistent hydrogen storage capacity between 1.56 and 2.0 wt.%. © 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd.
URI
https://pr.ibs.re.kr/handle/8788114/3044
ISSN
0360-3199
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > Journal Papers (저널논문)
Files in This Item:
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