• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Electrode Processes Utilizing the Interlayer Space of Inorganic Molecular Aggregates a Reaction Zone

Research Project

Project/Area Number 61470080
Research Category

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

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

Principal Investigator

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

Co-Investigator(Kenkyū-buntansha) IWAKURA Chiaki  Osaka University, Associate Professor, 工学部, 助教授 (00029183)
Project Period (FY) 1986 – 1987
Project Status Completed (Fiscal Year 1987)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥6,500,000)
Fiscal Year 1987: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1986: ¥5,600,000 (Direct Cost: ¥5,600,000)
KeywordsInorganic molecular aggregate / Clay-modified electrode / Zeolite-modified electrode / Electropolymerization / Photocatalyst / Quantum size effect / 分子ふるい効果 / インターカレーション / ゼオライト / 層間重合
Research Abstract

(1) Redox dehaviors of Ru(bpy)^2+_(bpy=2,2 '-bipyridine) and Fe(CN)^3-_ ions at a clay-modified electrode were investigated as a function of acidity of solution, and it was foound that the electrode reaction of cationic species, Ru(bpy)^2+_, is suppressed but that of anionic species, Fe(CN)^3-_, is promoted with an increase in acidity. These results are explained from the viewpoints that the increase in acidity results in an increase in protonation of the clay surface, causing the enhancement of electrostatic interaction between the positively charged electrode surface and the reaction species. In the present study, it has firstly been shown that the charged state of electrode surface plays an important role in electrochemical reactions at clay-modified electrodes.
(2) Aniline was incorporated in the interlayer space of clay and then polymerized electrochemically. The electropolymerization was found to proceed so slowly that it took more than ten hours to complete the reaction, giving the suggestion that the rate of electrolytic reactions in the interlayer space of clay is very slow.
(3) Microcrystalline Tio_2 incorporated in the interlayer space of clay was used as a photocatalyst for photodecomposition of normal carboxylic acids with different molecular size. It was found that the carboxylic acids the size of which are smsller than the clearance space of the clay can be incorporated in the interlayer space of clay to undergo the reactions, while the larger carboxylic acids can not be incorporated in the interlayer space of clay exhibiting low reactivities.
(4) Zeolite-modified electrodes were prepared by using zeolited with different pore size, and redox behaviors of Fe^<2+> ions at the electrodes were investigated. It was found that the redox reactions of the incorporated Fe^<2+> ions can thke place in strongly acidic solutions if the pore size of the zeolite used is larger than the ionic diameters of both hydrated Fe^<2+> ions and electrolyte cations used.

Report

(2 results)
  • 1987 Final Research Report Summary
  • 1986 Annual Research Report
  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] Hiroshi Inoue: Journal of Electroanalytical Chemistry and Interfacial Electrochemistry.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Hiroshi Inoue: Journal of Electroanalytical Chemistry and Interfacial Electrochemistry. 233. 291-294 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Hiroshi Yoneyama: Journal of the Americal Chemical Society.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Chiaki Iwakur: Journal of Electroanalytical Chemistry and Interfacial Electrochemistry.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Hiroshi,Inoue: "Effects of Solution pH on Electrochemical Behavior of Ru(bpy)^2+_ and Fe(CN)^3-_ Ions at a Clay-Modified Electrode" Journal of Electroanalytical Chemistry and Interfacial Blectrochemistry.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Hiroshi,Inoue: "Electropolymerization of Aniline Incorporated in montmorillonite" Journal of Electroanalytical Chemistry and Interfacial Electrochemistry. 233. 291-294 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Hiroshi,Yoneyama: "Quantum Size Effects and Photocatalytic Activities of Microcrystalline Tio_2 Incorporated in Sheet Silicates of Clay" Journal of the American Chemical Society.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Chiaki,Iwakura: "Effects of Solution pH on Voltammetric Behavior of Ferrous/Ferric Ions at Zeolite-Modified Electrodes" Journal of Electroanalytical Chemistry and Interfacial Electrochemistry.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Hiroshi Inoue: Bulletin of the Chemical Society of Japan.

    • Related Report
      1986 Annual Research Report
  • [Publications] Hiroshi Inoue: Journal Physical Chemistry.

    • Related Report
      1986 Annual Research Report

URL: 

Published: 1987-03-31   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi