학술논문
Synthesis and electrocatalytic activity of platinum nanoparticle/carbon nanotube composites.
Document Type
Article
Author
Source
Subject
*NANOCOMPOSITE materials
*ELECTROCATALYSIS
*PLATINUM compounds
*NANOPARTICLES
*CARBON nanotubes
*X-ray photoelectron spectroscopy
*THERMOGRAVIMETRY
*
*
*
*
*
*
Language
ISSN
0020-1685
Abstract
Pt/CNT nanocomposite materials with an average platinum particle size of 3-5 nm and platinum content of 13-28 wt % have been prepared by reducing chloroplatinic acid, HPtCl, in the presence of conical carbon nanotubes. The effect of synthesis conditions on the average platinum particle size, total platinum content, and surface composition of the nanocomposites has been studied using X-ray photoelectron spectroscopy, IR spectroscopy, electron microscopy, X-ray diffraction, and thermogravimetry. The materials have been tested as catalysts for hydrogen oxidation and oxygen reduction. Their performance has been assessed by cyclic and steady-state voltammetric techniques. The structure and composition effects on the electrocatalytic properties of the nanocomposites are discussed. [ABSTRACT FROM AUTHOR]