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Preparation, Characterization and Application of Semiconductor Nanoparticulate Films

Research Project

Project/Area Number 07455340
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 工業物理化学
Research InstitutionOsaka University

Principal Investigator

YONEYAMA Hiroshi  Osaka University, Faculty of Engineering, Professor, 工学部, 教授 (80029082)

Co-Investigator(Kenkyū-buntansha) NISHIZAWA Matsuhiko  Osaka University, Faculty of Engineering, Rsearch Associate, 工学部, 助手 (20273592)
TORIMOTO Tsukasa  Osaka University, Faculty of Engineering, Rsearch Associate, 工学部, 助手 (60271029)
Project Period (FY) 1995 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥6,700,000 (Direct Cost: ¥6,700,000)
Fiscal Year 1996: ¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 1995: ¥4,200,000 (Direct Cost: ¥4,200,000)
Keywordsnanoparticle / nanoparticlulate film / photocatalytic reaction / titanium dioxide / cadmium sulfide / STM / 走査型トンネル顕微鏡 / 自己組織化 / 光触媒 / 二酸化炭素 / 電気泳動電着
Research Abstract

Size-quantized semiconductor nanocrystals possess transient properties from bulk materials to molecules and have been very interesting research subjects. Many researches have been performed using suspended particles in solution. We have investigated preparation methods of nanoparticle films and properties of the prepared films. The following results were obtained in the present study.
(1) Immobilization of size-quantized titanium dioxide particles in polyvinylpyrrolidinone (PVPD) gel films was accomplished using electrophoretic deposition of titanium dioxide nanoparticles stabilized by PVPD in 2-propanol. The obtained gel films had high photocatalytic activities for reduction of nitrate ion and carbon dioxide to give ammonia and methanol, respectively. If these films were irradiated in the presence of both nitrate ion and carbon dioxide, urea was photoformed. (2) The films of titanium dioxide nanoparticle immobilized in silica matrices were prepared using the sol-gel technique with hydrolysis of Ti (OEt) _4 and Si (OEt) _4. The photoreduction of carbon dioxide on the prepared films gave carbon monoxide and formate as the reduction products and the ratio of those two kinds of products were influenced by the dielectric constant of the solvents used ; the fraction of formate increased with increase of the dielectric constant of solvent used. (3) The monolayr film of cadmium sulfide nanoparticles was prepared by covalently immobilizing cadimium sulfide nanoparticle to Au (111) with use of chemistry of self-assembling. STM measurements revealed that the obtained monolayr film was composed of the nanoparticles of 2-3 nm diameter without aggregation. Tunneling spectroscopy of a single nanoparticle could be performed, and the energy structure of cadmium sulfide nanoparticle was successfully determined.

Report

(3 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • Research Products

    (20 results)

All Other

All Publications (20 results)

  • [Publications] S. Kuwabata et al.: "Selective Photoreduction of Carbon Dioxide to Methanol on Titanium Dioxide Photocatalysts in Propylene Carbonate Solution" J. Chem. Soc., Chem. Commun.829-830 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] H. Uchida et al.: "Preparation and Properties fo Size-Quantized TiO2 Particles immobilized in Polyvinylpyrrolidinone Gel Films" Langmuir. 11. 3725-3729 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] H. Matsumoto et al.: "Narrowing Size Distribution of CdS Nanocrystals by Size Selective Photocorrosion" Chem. Lett.595-596 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] M. Miyake et al.: "Preparation and Properties of Surface-Modified CdS Nanoparticles Immobilized on Gold Electrode Substrates" Proc. -Electrochem. Soc.96. 315-321 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] H. Matsumoto et al.: "Preparation of Monodisperse CdS Nanocrystals by Size Selective Photocorrosion"" J. Phys. Chem.100. 13781-13785 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] M. Nishizawa et al.: "Photoimage Formation in a TiO_2 Particle-Incorporated Prussian Blue Film" J. Electrochem. Soc.143. 3462-3465 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] M. Miyake et al.: "Characterization of Covalently Immobilized Q-CdS Particles on Au (111) by Scanning Tunneling Microscopy and Tunneling Spectroscopy with High Reproducibility" Langmuir. (印刷中). (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] B. -J. liu et al.: "Effect of Solvents on Photocatalytic Reduction of Carbon Dioxide Using TiO_2 Nanocrystal Photocatalyst Embedded in SiO_2 Matrices" J. Photohem. Photobiol. A : Chem.(印刷中). (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] S.Kuwabata et.al: "Selective Photoreduction of Carbon Dioxide to Methanol on Titanium Dioxide Photocatalysts in Propylene Carbonate Solution" J.Chem.Soc., Chme.Commun.829. (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] H.Uchida et.al.: "Preparation and Properties of Size-Quatized TiO_2 Particles Immobilized in Polyvinylpyrrolidinone Gel Films" Langmuir. 11. 3725 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] H.Matsumoto et.al.: "Narrowing Size Distribution of CdS Nanocrystals by Size Selective Photocorrosion" Chem.Lett.595. (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] M.Miyake et.al.: "Preparation and Properties of Surface-Modified CdS Nanoparticles Immobilized on Gold Electrode Substrates" Proc.-Electrochem.Soc.96. 315 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] H.Matsumoto et.al.: "Preparation of Monodisperse CdS Nanocrystals by Size Selective Photocorrosion" J.Phys.Chem.100. 13781 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] M.Nishizawa et.al.: "Photoimage Formation in a TiO_2 Particle-Incorporated Prussian Blue Film" J.Electrochem.Soc.143. 3462 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] M.Miyake et.al.: "Characterization of Covalently Immobilized Q-Cds Particles on Au (111) by Scanning Tunneling Microscpy and Tunneling Spectroscopy with High reproducibility" Langmuir. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] B.-J.Liu et.al.: "Effect of Solvents on Photocatalytic Reduction of Carbon Dioxide Using TiO_2 Nanocrystal Photocatalyst Embedded in SiO_2 Matrices" J.Photochem.Photobiol.A : Chem.(in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] M.Nishizawa et.al.: "Photoimage Formation in a TiO_2 Particle-Incorporated Prussian Blue Film" Journal of Electrochemical Society. 143・11. (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] M.Miyake et.al.: "Characterization of Covalently Immobilized Q-CdS Particles on Au(111) by Scanning Tunneling Microscopy and Tunneling Spectroscopy with High Reproducibility" Langmuir. (印刷中). (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] Hiroyuki Uchida: "Preparation and Properties of Size-Quantized TiO_2 Particles Immobilized in Polyvinylpyrrolidinon Gel Films" Langmuir. 11. 3725-3729 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Susumu Kuwabata: "Selective Photoreduction of Carbon Dioxide to Methanol on Titanium Dioxide Photocatalysts in Propylene Carbonate Solution" Jounal of Chemical Society,Chemical Communications. 829-830 (1995)

    • Related Report
      1995 Annual Research Report

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Published: 1995-04-01   Modified: 2016-04-21  

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