Enhancing the hydrogen storage capacity of Pd-functionalized multi-walled carbon nanotubes

被引：45

作者：

Singh, Priyanka ^{[2
]}

Kulkarni, Mukta V. ^{[2
]}

Gokhale, Suresh P. ^{[2
]}

Chikkali, Samir H. ^{[3
]}

Kulkarni, Chandrashekhar V. ^{[1
]}

机构：

[1] Univ Bayreuth, D-95440 Bayreuth, Germany

[2] Natl Chem Lab, Phys & Mat Chem Div, Pune 411008, Maharashtra, India

[3] Univ Konstanz, Dept Chem, D-78457 Constance, Germany

来源：

APPLIED SURFACE SCIENCE | 2012年 / 258卷 / 08期

关键词：

Hydrogen based energy sources; Hydrogen storage capacity; Multiwalled carbon nanotubes; Pd functionalization; PVP capping; ADSORPTION; PALLADIUM; PHYSISORPTION; NANOPARTICLES; DECORATION;

D O I：

10.1016/j.apsusc.2011.11.075

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：3405 / 3409

页数：5

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