Enhancing the hydrogen storage capacity of Pd-functionalized multi-walled carbon nanotubes
Title | Enhancing the hydrogen storage capacity of Pd-functionalized multi-walled carbon nanotubes |
Publication Type | Journal Article |
Year of Publication | 2012 |
Authors | Singh, P, Kulkarni, MV, Gokhale, SP, Chikkali, SH, Kulkarni, CV |
Journal | Applied Surface Science |
Volume | 258 |
Issue | 8 |
Pagination | 3405-3409 |
Date Published | FEB |
ISSN | 0169-4332 |
Keywords | Hydrogen based energy sources, Hydrogen storage capacity, Multiwalled carbon nanotubes, Pd functionalization, PVP capping |
Abstract | We demonstrate that the hydrogen storage capacity of multi-walled carbon nanotubes can be enhanced by polyvinylpyrrolidone functionalization. The polyvinylpyrrolidone acts as a stabilizing agent for Pd-nanoparticles, reduces their size and facilitates their uniform and enhanced loading onto multi-walled carbon nanotubes. According to sorption studies, the polyvinylpyrrolidone capping and consequent nanostructural modification enables 2.3 times more hydrogen adsorption than mere Pd-functionalization of multi-walled carbon nanotubes. Corresponding morphological changes before and after polyvinylpyrrolidone capping, characterized using Raman Spectroscopy, X-ray diffraction, TEM and thermal analysis techniques, are also presented. The results contribute towards increasing the efficiency of hydrogen based sustainable energy sources. (C) 2011 Elsevier B.V. All rights reserved. |
DOI | 10.1016/j.apsusc.2011.11.075 |
Type of Journal (Indian or Foreign) | Foreign |
Impact Factor (IF) | 2.112 |