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Spectroelectrochemical Study of High-index Platinum Surfaces with terrace, step and kink sites.

Research Project

Project/Area Number 02640357
Research Category

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

Allocation TypeSingle-year Grants
Research Field 物理化学一般
Research InstitutionKeio University

Principal Investigator

TAKAHASHI Machiko  Keio University, Faculty of Science and Technology, 理工学部, 専任講師 (30154868)

Project Period (FY) 1990 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1991: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1990: ¥1,300,000 (Direct Cost: ¥1,300,000)
Keywordssingle crystal surface / infrared spectroscopy / electrochemistry / Pt / terrace site / step site / surface enhanced Raman scattering / metal cluster / クラスタ- / 単結晶 / SERS / 白金 / 銀
Research Abstract

The main purpose of this research is to clarify the nature of the single crystal surface which has different kinds of adsorption sites; i.e. step sites, kink sites and terrace sites. The prominent feature of this work is that all the experimentals were performed in situ condition, i.e. in electrochemical cells, and this is quite important for the elusidation of catalysis and electrochemistry in the atomic-scale point of view.
At first, overlayer structures of CO adsorbed on several single crystal surfaces, Pt(111), (110), (100), (11 1 1) and (711), have been investigated by infrared reflection absorption spectroscopy. There exist at least four kinds of adsorption bands of CO on these electrode surfaces, i.e. on-top CO on stepped and terrace atoms, symmetric and asymmetric bridge CO at around 2045, 2060, 1880 and 1910 cm^<-1>, respectively. By changing the applied potental, surface coverages and detection time scale, the characteristic behavior of the band intensities as well as their frequencies of these IR bands were observed.
Second theme of this work was the elucidation of detailed mechanism of surface enhanced Raman scattering effect. To enhance the Raman signals of adsorbed species, atomic scale roughness is the determining factor. In this research, the roughness has been known to be the metal clusters consisted of several atoms. The electronic states of the culster must affect the enhancement of SERS.

Report

(3 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • Research Products

    (14 results)

All Other

All Publications (14 results)

  • [Publications] M.Takahashi & M.Ito: "SERS Study of Underpotentially Deposited Bimetal Electrode System" J.Electron Spectroscopy and Related Phenomena. 54/55. 913-922 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] S.Watanabe,Y.Kinomoto F.Kitamura,M.Takahashi & M.Ito: "An infrared study of CO adsorbed on pt(100)and pt(110)electrodes:Dynamic aspects of CO at reconstructed surface" J.Electron Spectroscopy and Related Phenomena. 54/55. 1205-1224 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] A.Sasaki,M.Takahashi and M.Ito: "Structures of Lead or Cadmium Ad-atom and CO Overlayers on Pt(111)and Pt(100)Electrode Surfaces studied by Infrared Reflection Absorption Spectroscopy" J.Electroanal.Chem.,.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] S.Watanabe,M.Takahashi and M.Ito: "Coverage and Potential Induced CO Migration on Pt(11 1 1),Pt(711)and Pt(100)Electrode Surfaces Studied by Infrared Reflection Absorption Spectroscopy" Surface Science,.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M.Takahashi,A.Tomura,Y.Tsuji and M.Ito: "Correlation between SERS and Atomic Scale Roughness on underpotential deposited Ag/Rh(111) Electrode Surface" Surface Science,.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M.Takahashi & M.Ito: "SERS Study of Underpotentially Deposited Bimetal Electrode System" J.Electron Spectroscopy and Related Phenomena. 54/55. 913-922 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] S.Watanabe, Y.Kinomoto F.Kitamura, M.Takahash & M.Ito: "An infrared study of CO adsorbed on Pt(100)and Pt(110) electrodes: Dynamic aspects of CO at reconstructed surface" J.Electron Spectroscopy and Related Phenomena. 54/55. 1205-1224 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M.Takahashi&M.Ito: "SERS Study of Underpotentially Deposited Bimetal Electrode System" J.Electron Spectroscopy and Related Phenomena. 55/45. 913-922 (1990)

    • Related Report
      1991 Annual Research Report
  • [Publications] S.Watanabe,Y.Kinomot,F.Kitamura,M.Takahashi&M.Ito: "An infrared study of CO adsorbed on Pt(100)and Pt(110) electrodes:Dynamic aspects of CO at reconstructed surface" J.Electron Spectroscopy and Related Phenomena. 54/55. 1205-1224 (1990)

    • Related Report
      1991 Annual Research Report
  • [Publications] A.Sasaki,M.Takahashi and M.Ito: "Structures of Lead or Cadmium Adーatom and CO Overayers on Pt(111) and Pt(100)Electrode Surtrode studied by Infrared Reflection Absorption Spectroscopy" J.Electroanal.Chem.,.

    • Related Report
      1991 Annual Research Report
  • [Publications] S.Watanabe,M.Takahashi and M.Ito: "Coverage and Potential Induced CO Migration on Pt(11 1 1),Pt(711)and Pt(100)Electrode Surfaces Studied by Infrared Reflection Absorption Spectroscopy" Surface Science,.

    • Related Report
      1991 Annual Research Report
  • [Publications] M.Takahashi,A.Tomura,Y.Tsuji and M.Ito: "Correlation between SERS and Atomic Scale Roughness on underpotential deposited Ag/Rh(111) Electrode Surface" Surface Science,.

    • Related Report
      1991 Annual Research Report
  • [Publications] M.Takahashi & M.Ito: "SERS Study of Underpotentially Deposited Bimetal Electrode System" J.Electron Spectroscopy and Related Phenomena. 54/55. 913-922 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] S.Watanabe,Y.Kinomoto F.Kitamura,M.Takashi & M.Ito: "An infrared study of CO adsorbed on Pt(100)and pt(110)electrodes:Dynamic aspects of CO at reconstructed surface" J.Electron Spectroscopy and Related Phenomena. 54/55. 1205-1224 (1990)

    • Related Report
      1990 Annual Research Report

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Published: 1990-04-01   Modified: 2016-04-21  

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