alexa Assessments Of Uniformity Of Pt Nanoparticles Distribution And Granulometric Composition Of Pt/C Nanostructured Materials Using Thermal Analysis
ISSN: 2157-7439

Journal of Nanomedicine & Nanotechnology
Open Access

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4th International Conference on Nanotek & Expo
December 01-03, 2014 DoubleTree by Hilton Hotel San Francisco Airport, USA

Weldegebriel Yohannes Gebretsadik
Accepted Abstracts: J Nanomed Nanotechnol
DOI: 10.4172/2157-7439.S1.019
Abstract
High-temperature oxidation processes of Pt/C nanostructured materials were studied by thermogravimetric analysis and differential scanning calorimetry. The presence of different specific temperature ranges in the thermograms for the oxidation of Vulcan XC72, TIMREX HSAG 300, and Taunit nanofiber was shown to be due to both the peculiarities of granulometric composition of carbon supports and uneven spatial distribution of platinum nanoparticles. In the present study, a model for the high-temperature oxidation is proposed as an analysis tool for carbon support (Vulcan XC72) oxidation catalyzed by platinum nanoparticles. This analysis is expected to be effectively utilized in order to assess the uniformity of platinum distribution on carbon microparticles, provide additional information about granulometric composition of carbon microparticles, and composition of Pt/C nanostructured materials. Thus, we believe that this analysis can be used to preselect the most effective Pt/C nanostructured electrocatalysts for low temperature fuel cells.
Biography
Weldegebriel Yohannes Gebretsadik pursued his PhD at the age of 31 years from Southern Federal University, Faculty of Chemistry, Rostov, Russia. He is a Lecturer at Addis Ababa University, college of Natural sciences, Chemistry Department, Addis Ababa, Ethiopia.
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