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2012 Fiscal Year Final Research Report

Exploration of multi-element clusters activating chemical bonds of small molecules for designing nano-materials by using vibrational spectroscopy

Research Project

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Project/Area Number 22350004
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Physical chemistry
Research InstitutionThe University of Tokyo

Principal Investigator

MAFUNE Fumitaka  東京大学, 大学院・総合文化研究科, 教授 (50262142)

Co-Investigator(Kenkyū-buntansha) MIYAZIMA Ken  東京大学, 大学院・総合文化研究科, 助教 (20365456)
YASUIKE Tomokazu  分子科学研究所, 理論計算分子科学研究領域, 助教 (10419856)
Project Period (FY) 2010 – 2012
Keywordsクラスター / 化学反応 / 触媒
Research Abstract

The reactivities of metal clusters, metal oxide clusters and their complexes with small molecules such as N2O and CO were investigated by the experiments and theoretical studies. For neutral Rh clusters, they extract oxygen atom from N2O. The oxygen transfer reactions occur repeatedly, and the Rh oxide clusters were produced having a number of oxygen atoms in them. In the presence of CO, CO extracts an oxygen atom from Rh oxide clusters. The rate constants for oxygen extraction are higher for the more oxidized Rh clusters. Hence, it is expected that the catalytic activity of N2O reduction and CO oxidation by Rh clusters must be higher in oxidized states than in the completely metallic state. For the transition metal oxides such as Ni, they exhibits different reactivities to CO depending on the cluster size and stoichiometry; physisorption, chemisorption and CO oxidation. Though it was difficult, so far, to discriminate physisorption and chemisorption by the conventional mass spectrometry, we succeeded in discriminating them by using post heating method.

  • Research Products

    (22 results)

All 2013 2012 2011 2010 Other

All Journal Article (8 results) (of which Peer Reviewed: 1 results) Presentation (10 results) Book (2 results) Remarks (1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Catalytic Reactions on Neutral Rh Oxide Clusters More Efficient than on Neutral Rh Clusters2012

    • Author(s)
      Akira Yamada, Ken Miyajima, FumitakaMafune
    • Journal Title

      Phys. Chem. Chem. Phys

      Volume: 14(12) Pages: 4188-4195

  • [Journal Article] Selective decomposition of nucleic acids by laser irradiation on probe-tethered goldnanoparticlesinsolution2011

    • Author(s)
      Takeda, Yoshihiro; Kondow, Tamotsu; Mafune, Fumitaka
    • Journal Title

      PhysicaChemistry ChemicalPhysics

      Volume: 13(2) Pages: 586-592

    • Peer Reviewed
  • [Journal Article] Efficient fabrication of substrates for surface-assisted laser desorption/ionization mass spectrometry using laser ablation in liquids2011

    • Author(s)
      Tsuji, Takeshi; Mizuki, Takeshi; Yasutomo, Masato; Tsuji, Masaharu; Kawasaki, Hideya; Yonezawa, Tetsu; Mafune, Fumitaka
    • Journal Title

      Applied SurfaceScience

      Volume: 257(6) Pages: 2046-2050

  • [Journal Article]2011

    • Author(s)
      Yoshihiro Takeda, Tamotsu Kondow, andFumitaka Mafune
    • Journal Title

      Chem. Phys.Lett.

      Volume: 504 Pages: 175-179

  • [Journal Article] Nano-alloyformationof Ta-containing tri-metallic small clusters2011

    • Author(s)
      Ken Miyajima Hidenori Himeno, Akira Yamada, Hirotaka Yamamoto, Fumitaka Mafune
    • Journal Title

      J. Phys. Chem. A.

      Volume: 115 Pages: 1516-1520

  • [Journal Article] Solvation Structure of I- and Na+ on the surface of NaI aqueous solution studied by photodetechment spectroscopy in combination with mass spectrometry2011

    • Author(s)
      Makoto Shoji, Keisuke , Kaniwa, YojiroHiranuma, Olivia Maselli, Fumitaka Mafune*
    • Journal Title

      J. Phys. Chem. A.

      Volume: 115 Pages: 2148-2154

  • [Journal Article] Solvation Structures of Iodide on and below a Surface of Aqueous Solution Studied byPhotodetechment Spectroscopy2011

    • Author(s)
      Yojiro Hiranuma, Keisuke Kaniwa, Makoto Shoji, Fumitaka , Mafune*
    • Journal Title

      J. Phys. Chem. A.

      Volume: 115 Pages: 8493-8497

  • [Journal Article] Gas Phase Synthesis of Au Clusters Deposited on Titanium Oxide Clusters and their Reactivity with CO molecules2011

    • Author(s)
      Hidenori Himeno, Ken, Miyajima, Tomokazu Yasuike, Fumitaka Mafune
    • Journal Title

      J. Phys. Chem. A.

      Volume: 115 Pages: 11479-11485

  • [Presentation] Formation of Nanomaterials by Laser Ablation in Liquid2013

    • Author(s)
      F. Mafune
    • Organizer
      OMTAT2013
    • Place of Presentation
      Cochi, India
    • Year and Date
      20130100
  • [Presentation] Hydrogen affinity of niobium-carbon cluster ions in relation to formation mechanism of met-car cluster ions2012

    • Author(s)
      Ken Miyajima, Fumitaka Mafune
    • Organizer
      ISSPIC16
    • Place of Presentation
      Leuven - Belgium
    • Year and Date
      20120708-13
  • [Presentation] Gas phase synthesis of Au deposited on cerium oxide clusters and their reactivity2012

    • Author(s)
      Saki Kudo, Daisuke Shigeta, Ken Miyajima, Fumitaka Mafune
    • Organizer
      ISSPIC16
    • Place of Presentation
      Leuven - Belgium
    • Year and Date
      20120708-13
  • [Presentation] Chemical Reactivity of Metal Clusters with N2O and CO Studied as Model Catalyst2012

    • Author(s)
      F. Mafune
    • Organizer
      RGD28
    • Place of Presentation
      Zaragoza, Spain
    • Year and Date
      20120700
  • [Presentation] Formation of nanoparticles and nano-composites by laser ablation in solution2012

    • Author(s)
      F. Mafune
    • Organizer
      ANGEL2012
    • Place of Presentation
      Taormina, Italy
    • Year and Date
      20120500
  • [Presentation] Formation of nanomaterials by laser ablation in liquid2011

    • Author(s)
      F. Mafune
    • Organizer
      COLA2011
    • Place of Presentation
      Cancun,Mexico
    • Year and Date
      20111100
  • [Presentation] Solvation structure of iodide ions on a surface of aqueous solution of NaI studied by photoemission spectroscopy2010

    • Author(s)
      F. Mafune
    • Organizer
      Pacifichem 2010
    • Place of Presentation
      Honolulu Hawaii
    • Year and Date
      20101200
  • [Presentation] Laser synthesis and manipulation of nanomaterials2010

    • Author(s)
      F. Mafune
    • Organizer
      ANGEL2010
    • Place of Presentation
      Switherland
    • Year and Date
      20100000
  • [Presentation] Gas Phase Synthesis of Au Clusters Deposited on Defect-Controlled Titania and their Chemical Reactivity Hidenori Himeno2010

    • Author(s)
      Ken Miyajima, Fumitaka Mafune
    • Organizer
      ISSPIC15
    • Place of Presentation
      Oaxaca
    • Year and Date
      2010-09-19
  • [Presentation] Magic Stoichiometry of Ta-containing Tri-metallic Small Clusters2010

    • Author(s)
      K. Miyajima, H. Himeno, A. Yamada, H. Yamamoto, F. Mafune
    • Organizer
      ISSPIC15
    • Place of Presentation
      Oaxaca
    • Year and Date
      2010-09-19
  • [Book] Physical preparation of nanoalloys2013

    • Author(s)
      F. Mafune, K. Miyajima, M. Sobhan
    • Publisher
      Ed F. Calvo, Elsevior
  • [Book] 高校生のための東大授業ライブ-純情編2010

    • Author(s)
      東京大学教養学部
    • Total Pages
      116-129
    • Publisher
      東京大学出版会
  • [Remarks]

    • URL

      http://maildbs.c.u-tokyo.ac.jp/~mafune/

  • [Patent(Industrial Property Rights)] 三次元DNAネットワーク2013

    • Inventor(s)
      武田 佳宏、真船 文隆、近藤 保
    • Industrial Property Rights Holder
      ヨタ自動車株式会社 <TOYOTA JIDOSHA KABUSHIKI KAISHA>、株式 会社コンポン研究所
    • Industrial Property Number
      特許、5200069
    • Acquisition Date
      2013-02-15

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Published: 2014-08-29   Modified: 2017-10-16  

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