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Analysis of Pt-Nanoparticles Embedded on Crystalline TiO2 Studied by Transmission Electron Microscopy

Published online by Cambridge University Press:  17 March 2011

Jordi Arbiol ,
Ana Ruiz ,
Albert Cirera ,
Francisca Peiró ,
Albert Cornet ,
Joan R. Morante ,
Abdelhadi Alimoussa  and
Marie-José Casanove
Jordi Arbiol
Affiliation:
Enginyeria i Materials Electrònics, Departament d'Electrònica, Universitat de Barcelona, C. Martí i Franqués, 1, 08028 Barcelona, Spain, TN +34 93 4021141 e-mail: arbiol@el.ub.es CEMES-CNRS, 29, rue Jeanne Marvig, BP 4347, 31055 Toulouse Cedex, France
Ana Ruiz
Affiliation:
Enginyeria i Materials Electrònics, Departament d'Electrònica, Universitat de Barcelona, C. Martí i Franqués, 1, 08028 Barcelona, Spain, TN +34 93 4021141 e-mail: arbiol@el.ub.es
Albert Cirera
Affiliation:
Enginyeria i Materials Electrònics, Departament d'Electrònica, Universitat de Barcelona, C. Martí i Franqués, 1, 08028 Barcelona, Spain, TN +34 93 4021141 e-mail: arbiol@el.ub.es
Francisca Peiró
Affiliation:
Enginyeria i Materials Electrònics, Departament d'Electrònica, Universitat de Barcelona, C. Martí i Franqués, 1, 08028 Barcelona, Spain, TN +34 93 4021141 e-mail: arbiol@el.ub.es
Albert Cornet
Affiliation:
Enginyeria i Materials Electrònics, Departament d'Electrònica, Universitat de Barcelona, C. Martí i Franqués, 1, 08028 Barcelona, Spain, TN +34 93 4021141 e-mail: arbiol@el.ub.es
Joan R. Morante
Affiliation:
Enginyeria i Materials Electrònics, Departament d'Electrònica, Universitat de Barcelona, C. Martí i Franqués, 1, 08028 Barcelona, Spain, TN +34 93 4021141 e-mail: arbiol@el.ub.es
Abdelhadi Alimoussa
Affiliation:
CEMES-CNRS, 29, rue Jeanne Marvig, BP 4347, 31055 Toulouse Cedex, France
Marie-José Casanove
Affiliation:
CEMES-CNRS, 29, rue Jeanne Marvig, BP 4347, 31055 Toulouse Cedex, France
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Abstract

In this work, we studied the Pt particles embedded on crystalline TiO2 nanopowders. As it is well known, metal nanoparticles distributed on TiO2 surface can improve dramatically the reaction rate and selectivity of reaction in gas sensing. We prepared a wide set of TiO2 samples with different nominal Pt concentration. The aim of this study was to analyse the Pt distribution on TiO2 surface (density of Pt, particle size distribution, etc.), as well as the Pt phases existing in our samples. We used High Resolution Transmission Electron Microscopy (HRTEM) as a powerful tool to study Pt particles morphology. The HRTEM images were compared with computer simulations to confirm the results obtained. The chemical composition of the material has been also investigated by Inductively Coupled Plasma (ICP).

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 638: Symposium F – Microcrystaline & Nanocrystalline Semiconductors-2000 , 2000 , F5.41.1
Copyright
Copyright © Materials Research Society 2001

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