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2013 Fiscal Year Final Research Report

FABRICATION OF ULTRAFINE NANOPOROUS COPPER STABILIZED BY NOBLE METALS WITH LOW SURFACE DIFFUSIVITY

Research Project

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Project/Area Number 24760567
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Structural/Functional materials
Research InstitutionTohoku University

Principal Investigator

DAN Zhenhua  東北大学, 金属材料研究所, 助教 (60624129)

Project Period (FY) 2012-04-01 – 2014-03-31
Keywordsナノポーラス
Research Abstract

Ultrafine nanoporous copper (NPC) was fabricated from Ti-Cu-M (M:Ag, Au, Ni, Pd, Pt) amorphous precursor alloys by dealloying in HF solutions. NPCs stabilized by M had a pore size less than 10 nm, which is similar with that of NP Au, NP Pt. In comparison to NPCs fabricated from M-free Ti-Cu amorphous precursors, the pore size decreased about 1-2 orders. The introduction of M adatoms resulted in the suppression of the fast long-distance free diffusion of Cu adatoms during dealloying. The drastic decrease in the surface diffusivity caused by the slow diffusion of M adatoms indicated that the diffusion at the interface of alloy/solution controlled the formation of NPCs. The application of the present ultrafine NPCs has a potential to replace the conventional Pt nanoparticle catalysts, which can save the cost and on the other hand, the decrease of the consuming of rare Pt resources will help our society.

  • Research Products

    (22 results)

All 2014 2013 2012 Other

All Journal Article (14 results) Presentation (6 results) Book (1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Uniform evolution of nanoporosity on amorphous Ti-Cu alloys2014

    • Author(s)
      Zhenhua Dan, Fengxiang Qin, Yu Sugawara,Izumi Muto and Nobuyoshi Hara
    • Journal Title

      J. Nanosci. Nanotech.

      Volume: 14 Pages: 7879-7883

    • DOI

      10.1166/jnn.2014.9444

  • [Journal Article] Polyvinylpyrrolidone macromolecules function as a diffusion barrier during dealloying2014

    • Author(s)
      Zhenhua Dan, Fengxiang Qin and Nobuyoshi Hara
    • Journal Title

      Mater. Chem. Phys.

      Volume: 146 Pages: 277-282

    • DOI

      10.1016/j.matchemphys.2014.03.022

  • [Journal Article] Refinement of Nanoporous Copper : A Summary of Micro-alloying of Au-Group and Pt-Group Elements2014

    • Author(s)
      Zhenhua Dan, Fengxiang Qin and Nobuyoshi Hara
    • Journal Title

      Mater. Trans.

      Volume: 55 Pages: 796-800

    • DOI

      10.2320/matertrans.M2013445

  • [Journal Article] Fabrication of nanoporous copper by dealloying of amorphous Ti–Cu–Ag alloys2014

    • Author(s)
      Zhenhua Dan, Fengxiang Qin, Akihiro Makino, Yu Sugawara, Izumi Muto and Nobuyoshi Hara
    • Journal Title

      J. Alloy Compd.

      Volume: 586 Pages: 134-138

    • DOI

      10.1016/j.jallcom.2013.01.087

  • [Journal Article] Dependency of the formation of Au-stabilized nanoporous copper on the dealloying temperature2014

    • Author(s)
      Zhenhua Dan, Fengxiang Qin, Yu Sugawara,Izumi Muto and Nobuyoshi Hara
    • Journal Title

      Micropor. Mesopor. Mater.

      Volume: 186 Pages: 181-186

    • DOI

      10.1016/j.micromeso.2013.12.003

  • [Journal Article] Refinement of nanoporous copper by dealloying MgCuY amorphous alloys in sulfuric acids containing polyvinylpyrrolidone2014

    • Author(s)
      Zhenhua Dan, Fengxiang Qin, Shin-ichi Yamaura, Guoqiang Xie, Akihiro Makino and Nobuyoshi Hara
    • Journal Title

      J. Electrochem. Soc.

      Volume: 161 Pages: 120-125

    • DOI

      10.1149/2.076403jes

  • [Journal Article] Nanoporous palladium fabricated from an amorphous Pd_<42.5>Cu_<30>Ni_<7.5>P_<20> precursor and its ethanol electro-oxidation performance2013

    • Author(s)
      Zhenhua Dan, Fengxiang Qin, Takeshi Wada, Shin-ichi Yamaura, Guoqiang Xie,Yu Sugawara, Izumi Muto, Akihiro Makino and Nobuyoshi Hara
    • Journal Title

      Electrochim. Acta

      Volume: 108 Pages: 512-519

    • DOI

      10.1016/j.electacta.2013.07.047

  • [Journal Article] Elaboration of nanoporous Copper by modifying surface diffusivity by the minor addition of gold2013

    • Author(s)
      Zhenhua Dan, Fengxiang Qin, Yu Sugawara,Izumi Muto and Nobuyoshi Hara
    • Journal Title

      Micropor. Mesopor. Mat.

      Volume: 165 Pages: 257-264

    • DOI

      10.1016/j.micromeso.2012.08.026

  • [Journal Article] Effects of the initial microstructure of Ti–Cu alloys on final nanoporous copper via dealloying2013

    • Author(s)
      Zhenhua Dan, Fengxiang Qin, Yu Sugawara,Izumi Muto and Nobuyoshi Hara
    • Journal Title

      J. Alloy Compd.

      Volume: 557 Pages: 166-171

    • DOI

      10.1016/j.jallcom.2013.01.010

  • [Journal Article] Nickel-stabilized nanoporous copper fabricated from ternary TiCuNi amorphous alloys2013

    • Author(s)
      Zhenhua Dan, Fengxiang Qin, Yu Sugawara,Izumi Muto, Akihiro Makino and Nobuyoshi Hara
    • Journal Title

      Mater. Lett.

      Volume: 94 Pages: 128-131

    • DOI

      10.1016/j.matlet.2012.12.028

  • [Journal Article] Dealloying behavior of amorphous binary Ti–Cu alloys in hydrofluoric acid solutions at various temperatures2013

    • Author(s)
      Zhenhua Dan, Fengxiang Qin, Shin-ichi Yamaura, Yu Sugawara,Izumi Muto and Nobuyoshi Hara
    • Journal Title

      J. Alloy Compd.

      Volume: 581 Pages: 567-572

    • DOI

      10.1016/j.jallcom.2013.07.144

  • [Journal Article] Dealloying behaviours of an equiatomic TiCu alloy2013

    • Author(s)
      Zhenhua Dan, Fengxiang Qin, Yu Sugawara,Izumi Muto and Nobuyoshi Hara
    • Journal Title

      Mater. Trans.

      Volume: 54 Pages: 1120-1125

    • DOI

      10.2320/matertrans.M2013033

  • [Journal Article] Nanoporous copper dealloyed from a nanocrystallized TiCu alloy2013

    • Author(s)
      Zhenhua Dan, Fengxiang Qin, Yu Sugawara,Izumi Muto and Nobuyoshi Hara
    • Journal Title

      Mater. Sci. Forum

      Volume: 750 Pages: 72-75

    • DOI

      10.4028/www.scientific.net/MSF.750.72

  • [Journal Article] Fabrication of ultrafine nanoporous copper by the minor addition of gold2012

    • Author(s)
      Zhenhua Dan, Fengxiang Qin,Yu Sugawara,Izumi Muto and Nobuyoshi Hara
    • Journal Title

      Mater. Trans.

      Volume: 53 Pages: 1765-1769

    • DOI

      10.2320/matertrans.MAW201204

  • [Presentation] The refinement of the nanoporous copper by adding third elements2013

    • Author(s)
      Z.H. Dan, F.X. Qin, N. Hara
    • Organizer
      THERMEC2013
    • Place of Presentation
      Las Vegas, United State
    • Year and Date
      20131201-06
  • [Presentation] Refinement of Nanoporous Copper By Dealloying MgCuY Amorphous Alloys in Organic and Sulfuric Acids2013

    • Author(s)
      Z.H. Dan, F.X. Qin, G.Q. Xie, S. Yamaura, A. Makino, N. Hara
    • Organizer
      224^<th> ECS meeting
    • Place of Presentation
      San Franciscan, United State
    • Year and Date
      20131027-1101
  • [Presentation] Facile Fabrication of Nano-Structured Copper from Ternary Amorphous Alloys2012

    • Author(s)
      Z.H. Dan, F.X. Qin, Y. Sugawara, I. Muto and N. Hara
    • Organizer
      16^<th> Asian Pacific Corrosion Control Conference (APCCC)
    • Place of Presentation
      Kaohsiung, Taiwan
    • Year and Date
      20121021-24
  • [Presentation] Evolution of Nanoporosity on Amorphous Ti-Cu Alloys2012

    • Author(s)
      Z.H. Dan, F.X. Qin, Y. Sugawara, I. Muto and N. Hara
    • Organizer
      International Union of Materials Research Societies -International Conference in Asia 2012 IUMRS-ICA 2012
    • Place of Presentation
      BEXCO, Busan, Korea
    • Year and Date
      20120826-31
  • [Presentation] Nanoporous Copper Dealloyed from Nanocrystallized TiCu Alloys2012

    • Author(s)
      Z.H. Dan, F.X. Qin, Y. Sugawara, I. Muto and N. Hara
    • Organizer
      The 8thInternational Forum on Advanced Materials Science and Technology(IFAMST-8)
    • Place of Presentation
      Fukuoka, Japan
    • Year and Date
      20120801-04
  • [Presentation] Fabrication of nanoporous copper by dealloying of amorphous Ti-Cu-Ag alloys2012

    • Author(s)
      Z.H. Dan, F.X. Qin, A. Makino, Y.Sugawara, I. Muto and N. Hara
    • Organizer
      19^<th> International Symposium on Metastable Amorphous and Nanostructured Materials-ISMANAM2012
    • Place of Presentation
      Moscow, Russia
    • Year and Date
      20120618-22
  • [Book] Developments in Corrosion Protection

    • Author(s)
      Zhenhua Dan, Izumi Muto and Nobuyoshi Hara
    • Total Pages
      81-101
    • Publisher
      INTECH(ISBN978-953-51-1223-5,Chapter 5)
  • [Patent(Industrial Property Rights)] 酸性脱合金溶液にPVP添加よりナノポラース構造の微細化処理プロセス2014

    • Inventor(s)
      淡振華、秦風香、山浦真一、原信義
    • Industrial Property Rights Holder
      東北大学
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      特願2014-017601
    • Filing Date
      2014-01-31

URL: 

Published: 2015-06-25  

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