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2016 Fiscal Year Annual Research Report

Construction of Structure Models of Iron Hydroxide Nanominerals Using Scanning Transmission Electron Microscopy (STEM)

Research Project

Project/Area Number 26400512
Research InstitutionNiigata University

Principal Investigator

小西 博巳  新潟大学, 自然科学系, 教授 (30705215)

Co-Investigator(Kenkyū-buntansha) 赤井 純治  新潟大学, 自然科学系, フェロー (30101059)
Project Period (FY) 2014-04-01 – 2017-03-31
KeywordsSTEM / 走査透過電子顕微鏡 / フェリハイドライト / シュベルトマナイト
Outline of Annual Research Achievements

球面収差補正走査透過電子顕微鏡法により、フェリハイドライト、シュベルトマナイトの構造を観察し、Zコントラスト像から結晶構造モデルを作ることを試みた。電子線回折およびX線回折によりフェリハイドライトと同定されるナノ粒子の集合体からは、酸素の最稠密面がABAC、AB、および不規則なスタッキングをする粒子が認められた。これまで提案されたモデルとは異なりFeは8面体に入るが、4面体にはほとんど認められなかった。シュベルトマナイトは、アカガネアイト類似の構造をもつとされてきたが、Zコントラスト像ではアカガネアイトが持つような8面体で作られるトンネル構造は確認できない。これらの結果をもとに、新しい構造モデルの構築を試みた。

  • Research Products

    (7 results)

All 2016 Other

All Int'l Joint Research (1 results) Journal Article (4 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 4 results) Presentation (2 results) (of which Int'l Joint Research: 1 results)

  • [Int'l Joint Research] University of Wisconsin-Madison(米国)

    • Country Name
      U.S.A.
    • Counterpart Institution
      University of Wisconsin-Madison
  • [Journal Article] Occurrences and distribution of "invisible" precious metals in sulfide deposits from the Edmond hydrothermal field, Central Indian Ridge2016

    • Author(s)
      Wu, ZW, Sun, XM, Xu, HF, Konishi, H, Wang, Y, Wang, C, Dai, YZ, Deng, XG, Yu, M
    • Journal Title

      ORE GEOLOGY REVIEWS

      Volume: 79 Pages: 105-132

    • DOI

      10.1016/j.oregeorev.2016.05.006

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Role of nano-goethite in controlling U(VI) sorption-desorption in subsurface soil2016

    • Author(s)
      Jung, HB, Xu, HF, Konishi, H, Roden, EE]
    • Journal Title

      JOURNAL OF GEOCHEMICAL EXPLORATION

      Volume: 169 Pages: 80-88

    • DOI

      10.1016/j.gexplo.2016.07.014

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Interstratification of graphene-like carbon layers within black talc from Southeastern China: Implications to sedimentary talc formation2016

    • Author(s)
      Li, CM, Wang, RC, Xu, HF, Lu, XC, Konishi, H, He, K
    • Journal Title

      AMERICAN MINERALOGIST

      Volume: 101 Pages: 1668-1678

    • DOI

      10.2138/am-2016-5600

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Interactions Between Fe(III)-Oxides and Fe(III)-Phyllosilicates During Microbial Reduction 1: Synthetic Sediments2016

    • Author(s)
      Wu, T, Kukkadapu, RK, Griffin, AM, Gorski, CA, Konishi, H, Xu, HF, Roden, EE
    • Journal Title

      GEOMICROBIOLOGY JOURNAL

      Volume: 33 Pages: 793-806

    • DOI

      10.1080/01490451.2015.1117546

    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 鉄還元細菌によるヒ酸・亜ヒ酸吸着フェリハイドライトの変化とヒ素の挙動2016

    • Author(s)
      眞鍋達郎、小西博巳
    • Organizer
      日本鉱物科学会
    • Place of Presentation
      金沢市、金沢大学
    • Year and Date
      2016-09-23 – 2016-09-26
  • [Presentation] Fate of As(V) and As(III) during Bacterial Iron Reduction of Ferrihydrite2016

    • Author(s)
      Manabe, T., Konishi, H.
    • Organizer
      Goldschmidt2016
    • Place of Presentation
      Yokohama
    • Year and Date
      2016-06-26 – 2016-07-01
    • Int'l Joint Research

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Published: 2018-01-16   Modified: 2022-02-16  

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