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Facile Fabrication of Nanoparticles in the Nanospace of Ultrathin TiO2-Gel Films: Composition, Morphology and Catalytic Activity

Published online by Cambridge University Press:  01 February 2011

Junhui He  and
Toyoki Kunitake
Junhui He
Affiliation:
Frontier Research System, The Institute of Physical and Chemical Research (RIKEN)2–1 Hirosawa, Wako, Saitama 351–0198, Japan
Toyoki Kunitake
Affiliation:
Frontier Research System, The Institute of Physical and Chemical Research (RIKEN)2–1 Hirosawa, Wako, Saitama 351–0198, Japan
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Abstract

In this article, we present in-situ synthesis of nanoparticles of various compositions and morphologies in the nanospace of ultrathin TiO2-gel films using low temperature H2 and O2 plasmas as reductant and oxidant, respectively. Parameters that influence the formation of nanoparticles were investigated and discussed. Reversible chemical transformation was found to give monodisperse nanoparticles. Catalytic activities of Pd monometallic and Ag-core/Pd-shell bimetallic nanoparticles were tested for hydrogenation of methyl acrylate. The much enhanced catalytic activity is attributed mainly to a large ratio of the surface Pd atoms.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 794: Symposium T – Self-Organized Processes in Semiconductor Heteroepitaxy , 2003 , T3.6
Copyright
Copyright © Materials Research Society 2004

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References

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