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Preparation and microstructure control of metal/oxide nano-composite thin films utilizing porous structure of oxide gels

Research Project

Project/Area Number 06650965
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 無機工業化学
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

KOZUKA Hiromitsu  Kyoto Univ., Institute for Chemical Research Associate Professor, 化学研究所, 助教授 (80178219)

Project Period (FY) 1994 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1995: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1994: ¥1,900,000 (Direct Cost: ¥1,900,000)
KeywordsSol-gel method / Metal nanoparticle / Nanocomposite / Solar cell / Photoelectrochemistry / Thin film / Surface plasma resonance / 金属粒子 / 複合体
Research Abstract

Silica coating films containing dispersed gold nanoporticles have been prepared by heat-treating the gel films obtained from tetraethoxysilane-water-ethanol-hydrochloric acid-chloroauric acid tetrahydrate solutions. It was found that the size and shape of the gold particles can be controlled by controlling the solution reaction time and amount of water in the starting solutions. In addition, aligned, elongated gold nenoparticles could be precipitated in coating films consisting of fibrous pseudoboehmite particles.
Titania film electrodes containing dispersed gold or silver nanoparticles have been prepared by sol-gel method. It was found that photoresponse emerges in visible region when the metal particles are introduced to the titania photoanodes. The effect of the introduction of gold nanoparticles on the photoelectrochemical properties of dye-sensitized titania film photoanodes was also studied. The introduction of gold nanoparticles decreased the dye-induced photoresponse in the visible region, which was, however, found to be less when the overlap of the optical absorption of the gold particles and dyes was larger. This indicates that the dipole-dipole coupling between the gold particles and dye molecules dose exist, enhancing the photochemical processes occurring at the surface of the electrodes.
In summary, it has been demonstrated that the size and shape of the metal nanoparticles can be controlled by controlling the microstructure of the gel matrices, where alignment of elongated metal nanoparticles is also possible. Possibility of development of new photoelectrodes with high energy conversion efficiencies was also investigated.

Report

(3 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • Research Products

    (28 results)

All Other

All Publications (28 results)

  • [Publications] Hiromitsu Kozuka: "Control of optical properties of gel-derived oxide coating films containing fine metal particles" Journal of Sol-Gel Science and Technology. 2. 741-744 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Hiromitsu Kozuka: "Preparation of Ag/TiO_2 composite films by the solgel method" Bulletin of the Institute for Chemical Research, Kyoto University. 72. 209-224 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Sumio Sakka: "Sol-gel preparation of metal particle/oxide nanocomposites" SPIE. 2288. 108-119 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Gaoling Zhao: "Preparation of TiO_2 coating films containing Pd fine particles" Journal of Sol-Gel Science and Technology. 4. 37-47 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Hiromitsu Kozuka: "Dispersion of elongated gold nanoparticles aligned in a pseudoboehmite matrix by sol-gel method" Journal of Ceramic Society of Japan. 103. 1305-1308 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Gaoling Zhao: "Photoelectrochemical properties of dye-sensitized TiO_2 films containing gold metal particles preparedby solgel method" Journal of Ceramic Society of Japan. 104. 164-168 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Gaoling Zhao: "Sol-gel preparation and photoelectrochemical properties of TiO_2 films containing Au and Ag metal particles" Thin Solid Films. (in press).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Gaoling Zhao: "Effects of the incorporation of silver and gold nanoparticles on the photoanodic properties of rose bengal sensitized TiO_2 film electrodes prepared by sol-gel method" Solar Energy Materials and Solar Cells.(submitted).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] H.Kozuka, G.Zhao and S.Sakka: "Control of optical properties of gel-derived oxide coating films containing fine metal particles" J.Sol-Gel Sci.Techn.2. 741-744 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] H.Kozuka, G.Zhao and S.Sakka: "Preparation of Ag/TiO_2 composite films by the sol-gel method" Bull.Inst.Chem.Res., Kyoto Univ.72. 209-224 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] S.Sakka, H.Kozuka and G.Zhao: "Sol-gel preparetion of metal particle/oxide nanocomposites" SPIE. 2288. 108-119 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] G.Zhao, H.Kozuka and S.Sakka: "Preparation of TiO_2 coating films containing Pd fine particles by sol-gel method" J.Sol-Gel Sci.Techn.4. 37-47 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] H.Kozuka, M.Okuno and T.Yoko: "Dispersion of elongated gold nanoparticles aligned in a pseudoboehmite matrix by sol-gel method" J.Ceram.Soc.Jpn.103. 1305-1308 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] G.Zhao, H.Kozuka and T.Yoko: "Photoelectrochemical properties of dye-sensitized TiO_2 films containing dispersed gold metal particles prepared by sol-gel method" J.Ceram.Soc.Jpn.104. 164-168 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] G.Zhao, H.Kozuka and T.Yoko: "Sol-gel preparation and photoelectrochemical properties of TiO_2 Films Containing Au and Ag Metal Particles" Thin Solid Films. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] G.Zhao, H.Kozuka and T.Yoko: "Effects of the incorporation of silver and gold nanoparticles on the photoanodic properties of rose bengal sensitized TiO_2 film electrodes prepared by sol-gel method" Solar Energy Mater.Solar Cells. (submitted).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Hiromitsu Kozuka: "Control of optical properties of gel-derived oxide coating films containing fine metal particles" Journal of Sol-Gel Science and Technology. 2. 741-744 (1994)

    • Related Report
      1995 Annual Research Report
  • [Publications] Hiromitsu Kozuka: "Preparation of Ag/TiO_2 composite films by the sol-gel method" Bulletin of the Institute for Chemical Research, Kyoto University. 72. 209-224 (1994)

    • Related Report
      1995 Annual Research Report
  • [Publications] Sumio Sakka: "Sol-gel preparation of metal particle/oxide nanocomposites" SPIE. 2288. 108-119 (1994)

    • Related Report
      1995 Annual Research Report
  • [Publications] Gaoling Zhao: "Preparation of TiO_2 coating films containing Pd fine particles by sol-gel method" Journal of Sol-Gel Science and Technology. 4. 37-47 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Hiromitsu Kozuka: "Dispersion of elongated gold nanoparticles aligned in a pseudoboehmite matrix by sol-gel method" Journal of Ceramic Society of Japan. 103. 1305-1308 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Gaoling Zhao: "Photoelectrochemical properties of dye-sensitized TiO_2 films containing gold metal particles prepared by sol-gel method" Journal of Ceramic Society of Japan. 104. 164-168 (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] Gaoling Zhao: "Sol-gel preparation and photoelectrochemical properties of TiO_2 films containing Au and Ag metal particles" Thin Solid Films (in press).

    • Related Report
      1995 Annual Research Report
  • [Publications] Gaoling Zhao: "Effects of the incorporation of silver and gold nanoparticles on the photoanodic properties of rose bengal sensitized TiO_2 film electrodes prepared by sol-gel method" Solar Energy Materials and Solar Cells. (submitted).

    • Related Report
      1995 Annual Research Report
  • [Publications] Hiromitsu Kozuka: "Control of optical properties of gel-derived oxide coating film containing fine metal particles" Journal of Sol-Gel Science and Technology. 2. 741-744 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] Hiromitsu Kozuka: "Preparation of Ag/TiO_2 composite films by the sol-gel method" Bulletin of the Institute for Chemical Research,Kyoto University. 72. 209-224 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] Sumio,Sakka: "Sol-gel preparation of metal particle/oxide nanocomposites" SPIE. 2288. 108-119 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] Gaoling Zhao: "Preparation of TiO_2 coating films containing Pd fine particles by sol-gel method" Journal of Sol-Gel Science and Technology. 4. 37-47 (1995)

    • Related Report
      1994 Annual Research Report

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Published: 1994-04-01   Modified: 2016-04-21  

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