Synthesis of Au nanoparticle-incorporated mesoporous TiO 2 composite thin films and their electrical properties

Min Hee Hong, Chang Sun Park, Hyung-Ho Park

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Mesoporous TiO 2 thin films containing Au nanoparticles were synthesized via solgel and evaporation-induced self-assembly processes. In this work, the effect of surfactant concentration on the pore structure of mesoporous TiO 2 thin films was investigated and Au nanoparticles were introduced to enhance the electrical conductivity of mesoporous TiO 2 without collapse of the pore structure. Pore structure was analyzed with small angle X-ray diffraction and grazing incidence small angle X-ray scattering. Crystallization of TiO 2 was analyzed with wide angle X-ray diffraction. Increased surfactant concentration led to a corresponding increase in the porosity of mesoporous TiO 2 thin films, but pore ordering in the mesoporous structure was still enhanced. The increasing rate of electrical resistivity associated with increased porosity was reduced in response to decreases in the electron scattering probability, which are strongly dependent on the pore ordering of mesoporous structures. Furthermore, the electrical conductivity of mesoporous TiO 2 composite thin films was enhanced by the incorporation of Au nanoparticles due to the surface plasmon effect of Au nanoparticles.

Original languageEnglish
Pages (from-to)959-962
Number of pages4
JournalJournal of the Ceramic Society of Japan
Volume122
Issue number1431
DOIs
Publication statusPublished - 2014 Nov 1

Fingerprint

Composite films
Electric properties
Pore structure
electrical properties
Nanoparticles
porosity
Thin films
nanoparticles
composite materials
synthesis
thin films
Surface-Active Agents
Surface active agents
Porosity
X ray diffraction
Electron scattering
electrical resistivity
Crystallization
X ray scattering
Self assembly

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

Cite this

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abstract = "Mesoporous TiO 2 thin films containing Au nanoparticles were synthesized via solgel and evaporation-induced self-assembly processes. In this work, the effect of surfactant concentration on the pore structure of mesoporous TiO 2 thin films was investigated and Au nanoparticles were introduced to enhance the electrical conductivity of mesoporous TiO 2 without collapse of the pore structure. Pore structure was analyzed with small angle X-ray diffraction and grazing incidence small angle X-ray scattering. Crystallization of TiO 2 was analyzed with wide angle X-ray diffraction. Increased surfactant concentration led to a corresponding increase in the porosity of mesoporous TiO 2 thin films, but pore ordering in the mesoporous structure was still enhanced. The increasing rate of electrical resistivity associated with increased porosity was reduced in response to decreases in the electron scattering probability, which are strongly dependent on the pore ordering of mesoporous structures. Furthermore, the electrical conductivity of mesoporous TiO 2 composite thin films was enhanced by the incorporation of Au nanoparticles due to the surface plasmon effect of Au nanoparticles.",
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Synthesis of Au nanoparticle-incorporated mesoporous TiO 2 composite thin films and their electrical properties . / Hong, Min Hee; Park, Chang Sun; Park, Hyung-Ho.

In: Journal of the Ceramic Society of Japan, Vol. 122, No. 1431, 01.11.2014, p. 959-962.

Research output: Contribution to journalArticle

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