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Syntheses and characterizations of multiwalled carbon nanotubes-supported palladium nanocomposites

Published online by Cambridge University Press:  14 May 2012

Walid M. Daoush  and
Toyoko Imae
Walid M. Daoush*
Affiliation:
Department of Powder Technology at Central Metallurgical R&D Institute, Helwan, Cairo, Egypt
Toyoko Imae
Affiliation:
Graduate Institute of Applied Science and Technology, Honors College, National Taiwan University of Science and Technology, Taipei 10607, Taiwan, Republic of China
*
a)Address all correspondence to this author. e-mail: waleeddaush@cmrdi.sci.eg
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Abstract

Multiwalled carbon nanotubes/Pd nanoparticles (CNT/Pd) were prepared by different four synthesis techniques. After the chemical oxidation of CNTs, the infrared absorption data indicated the existence of several functional groups loaded on the CNTs surfaces. The first Pd deposition technique went through the processes of Sn sensitization and Pd deposition on the functionalized surfaces of CNTs. The second method was Pd deposition by polyol process. The third method was Pd deposition using hydrazine in acidic media. In the fourth method, fourth generation poly(amidoamine) dendrimer and sodium borohydride were used as an intermediator between Pd and the surfaces of CNTs and as a reducing agent of the palladium chloride, respectively. It was observed from transmission electron microscope analysis of the produced CNT/Pd nanoparticles that the Pd particles on the CNTs prepared by the fourth method had the smallest average particle size of 3 nm. The Pd contents in the produced CNT/Pd nanocomposite powders were determined by thermogravimetric analysis.

Keywords

carbon nanotube/Pd nanocompositesensitizationmetallizationpolyol processhydrazinedendrimer
Type
Articles
Information
Journal of Materials Research , Volume 27 , Issue 13 , 14 July 2012 , pp. 1680 - 1687
Copyright
Copyright © Materials Research Society 2012

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