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Singh, Priyanka, Kulkarni, Mukta V., Gokhale, Suresh P., Chikkali, Samir H. and Kulkarni, Chandrashekhar V. 
ORCID: 0000-0002-5621-4791
(2012)
Enhancing the hydrogen storage capacity of Pd-functionalized multi-walled carbon nanotubes.
Applied Surface Science, 258
(8).
pp. 3405-3409.
ISSN 01694332
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Official URL: http://dx.doi.org/10.1016/j.apsusc.2011.11.075
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.
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