金属イオン還元細菌を活用する貴金属ナノ粒子の室温合成とその応用  [in Japanese] Room-Temperature Synthesis and Their Applications of Noble Metal Nanoparticles by Metal Ion-Reducing Bacteria  [in Japanese]

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Author(s)

    • 小西 康裕 KONISHI Yasuhiro
    • 大阪府立大学大学院工学研究科物質・化学系専攻化学工学分野 Department of Chemical Engineering, Osaka Prefecture University
    • 荻 崇 OGI Takashi
    • 大阪府立大学大学院工学研究科物質・化学系専攻化学工学分野 Department of Chemical Engineering, Osaka Prefecture University
    • 斉藤 範三 SAITO Norizo
    • 大阪府立大学大学院工学研究科物質・化学系専攻化学工学分野 Department of Chemical Engineering, Osaka Prefecture University

Abstract

Although chemical and physical synthetic routes to noble metal nanoparticles have been extensively developed, another possibility is biological synthesis by reduction of noble metal ions using microorganism. We focused on the Fe(III)-reducing bacteria <I>Shewanella algae</I> and <I>Shewanella oneidensis</I> as a candidate microbe for rapid reductive deposition of noble metal at room temperature, because the reduction potential of Fe(III) ions is almost equal to that of noble metal ions. Intracellular synthesis of noble metal (Au, Pd, Pt) nanoparticles was achieved at room temperature using resting cells of the Fe(III)-reducing bacteria, when either formate or lactate was provided as the electron donor. The bioreductive deposition of noble metal was a fast process: 1-10 mol/m<SUP>3</SUP> aqueous Pd(II) ions were completely reduced to crystalline Pd(0) nanoparticles within 60 min. Biogenic metal nanoparticles 5-10 nm in size were located in the periplasmic space of bacterial cells. The dried biomass-supported palladium was applicable to a heterogeneous catalyst in a chemical reaction and an anode catalyst in a fuel cell for power production. Our methodology for the room-temperature synthesis of noble metal nanoparticles using the Fe(III)-reducing bacteria is an attractive green process that is cost-effective and environmentally benign.

Journal

  • Journal of the Japan Society of Powder and Powder Metallurgy

    Journal of the Japan Society of Powder and Powder Metallurgy 57(7), 508-513, 2010-07-15

    Japan Society of Powder and Powder Metallurgy

References:  8

Codes

  • NII Article ID (NAID)
    10026872082
  • NII NACSIS-CAT ID (NCID)
    AN00222724
  • Text Lang
    JPN
  • Article Type
    REV
  • ISSN
    05328799
  • NDL Article ID
    10782735
  • NDL Source Classification
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL Call No.
    Z17-274
  • Data Source
    CJP  NDL  J-STAGE 
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