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Development of inorganic chemistry reactions in active ion-rich reaction fields: Creation of novel base metal nanostructures

Planned Research

Project AreaScience of active ion-rich liquids
Project/Area Number 23H03829
Research Category

Grant-in-Aid for Transformative Research Areas (B)

Allocation TypeSingle-year Grants
Review Section Transformative Research Areas, Section (II)
Research InstitutionKyoto University

Principal Investigator

西 直哉  京都大学, 工学研究科, 准教授 (10372567)

Project Period (FY) 2023-04-01 – 2026-03-31
Project Status Granted (Fiscal Year 2024)
Budget Amount *help
¥31,850,000 (Direct Cost: ¥24,500,000、Indirect Cost: ¥7,350,000)
Fiscal Year 2025: ¥17,030,000 (Direct Cost: ¥13,100,000、Indirect Cost: ¥3,930,000)
Fiscal Year 2024: ¥10,140,000 (Direct Cost: ¥7,800,000、Indirect Cost: ¥2,340,000)
Fiscal Year 2023: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Keywords活イオン液体 / 非水液液界面 / 卑金属 / 無電解析出 / ナノ構造
Outline of Research at the Start

本研究では、既存の液液二相系で実現できなかった卑金属ナノマテリアル群の無機化学合成を、活イオン液体|油界面を新たな活イオンリッチ反応場とする金属還元反応により達成する。この新たな非水液液界面における金属還元析出メカニズムを解明する。本研究によって固体基板フリー・添加剤フリーな卑金属ナノマテリアルの合成法を確立することで、具体的には、AlやMgのナノ構造を用いる新たな紫外プラズモンセンサーや、卑金属ハイエントロピー合金(HEA)ナノ粒子を用いる電極触媒への応用展開を展望する。

Outline of Annual Research Achievements

【活イオン液体および油の検討】活イオン液体|油界面では、油へのイオン移動ギブズエネルギーの大きい疎油性イオンを構成イオンにする必要があるが、概して疎油性イオンはイオンサイズが小さく、隣接イオン間の静電相互作用引力が大きいため、融点が高い傾向にある。そこで、融点が現実的な範囲(<~100℃)にあり、かつ、構成イオンが疎油性の活イオン液体を広く探索した。その結果、Mgグライム系の高濃度電解液がMgを活イオンとして高濃度に含み、かつ、融点が低いことが分かった。またこの電解液がトルエンと良好な相分離挙動を示すことも確認した。トルエンに還元剤を加えた場合には、液液界面においてMgが還元析出できることを見出した。ただし還元析出に伴って液液二相系に中間混合層が生成した。反応場を理想的に二次元にするためには、さらに相溶性の低い液液二相系を探索する必要がある。他の活イオン液体として、還元耐性の高い4級アンモニウムのCl塩の検討を開始した。イミダゾリウム系イオン液体で見られたイオン液体イオン自体の還元分解が起こらないことを見出した。

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

今年度の目標であった、相分離する活イオン液体-油二相系の探索とMgの還元析出が、どちらも良好に進行したため

Strategy for Future Research Activity

引き続き、活イオン液体|油界面におけるMg還元において、液液二相相分離と活イオン液体の還元耐性の観点から研究を進めていく。その成果を学会・論文で積極的に公表し、関連研究者からのフィードバックを得ていく。

Report

(1 results)
  • 2023 Annual Research Report
  • Research Products

    (14 results)

All 2024 2023

All Journal Article (10 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 10 results) Presentation (4 results) (of which Int'l Joint Research: 1 results,  Invited: 4 results)

  • [Journal Article] Charge transfer across the ionic liquid/oil interface: Facilitated ion transfer and electron transfer2024

    • Author(s)
      Miyazato Koji、Yokoyama Yuko、Sakka Tetsuo、Nishi Naoya
    • Journal Title

      Journal of Electroanalytical Chemistry

      Volume: 954 Pages: 118038-118038

    • DOI

      10.1016/j.jelechem.2024.118038

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Layering of hydroxyl groups causes anisotropic molecular clustering in liquid ethanol on hydrophobic surfaces: A molecular dynamics study2023

    • Author(s)
      Kitaoka Haru、Nishi Naoya、Yokoyama Yuko、Sakka Tetsuo
    • Journal Title

      Journal of Molecular Liquids

      Volume: 392 Pages: 123488-123488

    • DOI

      10.1016/j.molliq.2023.123488

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Second harmonic generation as a probe of structure and dynamics of ionic liquids at the electrode interface2023

    • Author(s)
      Nishi Naoya、Baba Hiromasa、Yamazawa Takashi、Yokoyama Yuko、Sakka Tetsuo
    • Journal Title

      Journal of Electroanalytical Chemistry

      Volume: 950 Pages: 117905-117905

    • DOI

      10.1016/j.jelechem.2023.117905

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A new potentiometric method of determining the ionization constant of water based on the ionic liquid salt bridge consisting of N-ethyl-N-heptylpyrrolidinium bis(pentafluoroethanesulfonyl)amide2023

    • Author(s)
      Ogaki Toshiaki、Kitazumi Yuki、Nishi Naoya、Kakiuchi Takashi
    • Journal Title

      Journal of Electroanalytical Chemistry

      Volume: 949 Pages: 117858-117858

    • DOI

      10.1016/j.jelechem.2023.117858

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effective Synthesis of Deuterated n-Octylamine and Its Analogues2023

    • Author(s)
      Akutsu-Suyama Kazuhiro、Ueda Misaki、Shibayama Mitsuhiro、Ishii Kosuke、Nishi Naoya
    • Journal Title

      EPJ Web of Conferences

      Volume: 286 Pages: 01004-01004

    • DOI

      10.1051/epjconf/202328601004

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fraunhofer-type absorption lines from a submerged Cu target by long-pulse laser-induced breakdown spectroscopy: toward non-gated detection2023

    • Author(s)
      Li Nan、Nishi Naoya、Zheng Ronger、Zheng Yongqiu、Guan Jinge、Xue Chenyang、Zhang Zengxing、Sakka Tetsuo
    • Journal Title

      Journal of Analytical Atomic Spectrometry

      Volume: 38 Issue: 10 Pages: 1908-1913

    • DOI

      10.1039/d3ja00129f

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Reductive deposition of aluminum at a water-free ionic liquid/oil interface2023

    • Author(s)
      Yoshida Naohiro、Kuroyama Yohei、Yokoyama Yuko、Sakka Tetsuo、Nishi Naoya
    • Journal Title

      Electrochemistry Communications

      Volume: 156 Pages: 107575-107575

    • DOI

      10.1016/j.elecom.2023.107575

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Nonadditivities of the Particle Sizes Hidden in Model Pair Potentials and Their Effects on Physical Adsorptions2023

    • Author(s)
      Amano Ken-ichi、Furukawa Satoshi、Kubo Yuto、Nakamura Yuka、Ishii Rina、Tanase Ayane、Maebayashi Masahiro、Hayashi Tomohiko、Nishi Naoya、Sakka Tetsuo
    • Journal Title

      Langmuir

      Volume: 39 Issue: 37 Pages: 12999-13007

    • DOI

      10.1021/acs.langmuir.3c00968

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Investigation of the signal uncertainty in laser-induced breakdown spectroscopy based on error propagation considering self-absorption2023

    • Author(s)
      Gu Weilun、Nishi Naoya、Hou Zongyu、Wang Zhe、Sakka Tetsuo
    • Journal Title

      Spectrochimica Acta Part B: Atomic Spectroscopy

      Volume: 206 Pages: 106732-106732

    • DOI

      10.1016/j.sab.2023.106732

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A Water‐Free ITIES: Ionic Liquid/Oil Interface for Base Metal Nanostructure Formation ? Zn Case2023

    • Author(s)
      Nishi Naoya、Kuroyama Yohei、Yoshida Naohiro、Yokoyama Yuko、Sakka Tetsuo
    • Journal Title

      ChemElectroChem

      Volume: 10 Issue: 2

    • DOI

      10.1002/celc.202201000

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Presentation] 量子ビーム反射率法によるイオン液体の電気化学界面の構造解析2024

    • Author(s)
      〇西 直哉
    • Organizer
      第1回SPring-8先端電池研究会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 反射率法でみるイオン液体界面の構造・ダイナミクス・反応2024

    • Author(s)
      〇西 直哉
    • Organizer
      電気化学会第91回大会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Electroless deposition of base metals at the liquid/liquid interface between oil and room-temperature ionic liquids2023

    • Author(s)
      〇N. Nishi
    • Organizer
      2023 Joint Symposium on Molten Salts
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] イオン液体と油との間の非水液液界面における金属ナノ構造の還元析出2023

    • Author(s)
      〇西 直哉
    • Organizer
      溶融塩委員会210回定例委員会
    • Related Report
      2023 Annual Research Report
    • Invited

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Published: 2023-04-13   Modified: 2025-04-17  

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