Facile fabrication of nanoparticles in the nanospace of ultrathin TiO 2-gel films: Composition, morphology and catalytic activity

Junhui He, Toyoki Kunitake

Research output: Contribution to journalArticle

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.

Original languageEnglish
Pages (from-to)23-28
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Volume794
Publication statusPublished - 2003
Externally publishedYes

Fingerprint

catalytic activity
Catalyst activity
Gels
gels
Nanoparticles
Fabrication
nanoparticles
fabrication
Chemical analysis
Reducing Agents
acrylates
Oxidants
Hydrogenation
hydrogenation
Plasmas
Atoms
synthesis
atoms
Temperature

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials

Cite this

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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.",
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journal = "Materials Research Society Symposium - Proceedings",
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