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Fabrication of highly functional layered hydroxide catalysts based on a structure controlling in nanometer-scale

Research Project

Project/Area Number 20K15368
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 36010:Inorganic compounds and inorganic materials chemistry-related
Research InstitutionHiroshima University

Principal Investigator

Naoki Tarutani  広島大学, 先進理工系科学研究科(工), 助教 (60806199)

Project Period (FY) 2020-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2020: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Keywords層状金属水酸化物 / ナノ粒子 / 電気化学触媒 / 層状金属水酸化物塩 / ナノシート / 自己組織化単分子膜 / ナノ触媒 / 酸素生成反応触媒 / 微細構造制御
Outline of Research at the Start

電気化学的な酸素生成反応は、水の電気分解などの再生可能エネルギー利用に深く関わっており、触媒を用いた効果的な反応進行が望まれる。本研究では埋蔵量の多い元素から構成される金属水酸化物触媒に着目し、原子スケール程度の局所微細構造が触媒活性に与える影響を網羅的に評価する。得られる結果に基づいて材料を精密に設計することで、安価で高活性な触媒開発をめざす。

Outline of Final Research Achievements

Layered metal hydroxides are composed of alternate stacking of hydroxide sheets and anion molecule layers. In this study, nanosized layered metal hydroxides were synthesized. Systematic investigation of synthesis condition enabled to tune the crystal growth direction. As a result, layered metal hydroxide nanoparticles having different crystal edge ratio were obtained. Composites including synthesized layered metal hydroxide nanoparticles and various sized carbon materials were prepared toward electrochemical evaluations. It was found that the composites of layered metal hydroxide nanoparticles with carbon microparticles showed improved electrochemical functions compared with the composites of layered metal hydroxide nanoparticles with carbon nanoparticles.

Academic Significance and Societal Importance of the Research Achievements

再生可能エネルギーの普及に向けて水電解や空気電池の実用化が進められており、双方に関わる酸素生成反応の効率的な進行が望まれている。層状金属水酸化物は安価で埋蔵量の多い元素から構成されており、触媒活性を示す有望な材料である。本研究では層状金属水酸化物をナノ粒子化し、その大きさや形状を様々に制御する手法を確立した。さらに、層状金属水酸化物ナノ粒子の電気化学特性を最大化するため、導電材の大きさについて系統的に検討して最適化の指針を得た。

Report

(3 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • Research Products

    (14 results)

All 2022 2021

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 2 results) Presentation (9 results) (of which Invited: 2 results)

  • [Journal Article] Understanding the Electrophoretic Deposition Accompanied by Electrochemical Reactions Toward Structurally Colored Bilayer Films2022

    • Author(s)
      Naoki Tarutani, Ryo Uesugi, Kensuke Uemura, Kiyofumi Katagiri, Kei Inumaru, and Yukikazu Takeoka
    • Journal Title

      ACS Applied Materials & Interfaces

      Volume: ASAP Issue: 20 Pages: 23653-23659

    • DOI

      10.1021/acsami.2c04635

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Size Effect of Hydroxide Nanobuilding Blocks and Nonionic Block Copolymer Templates on the Formation of Ordered Mesoporous Structures2021

    • Author(s)
      Tarutani Naoki、Katagiri Kiyofumi、Inumaru Kei、Ishigaki Takamasa
    • Journal Title

      The Journal of Physical Chemistry B

      Volume: 125 Issue: 18 Pages: 4883-4889

    • DOI

      10.1021/acs.jpcb.1c00713

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Interconnection of organic-inorganic hybrid nano-building blocks towards thermally robust mesoporous structures2021

    • Author(s)
      Tarutani Naoki、Sato Riona、Yamazaki Wataru、Katagiri Kiyofumi、Inumaru Kei、Ishigaki Takamasa
    • Journal Title

      Nanoscale

      Volume: 13 Issue: 26 Pages: 11446-11454

    • DOI

      10.1039/d0nr08689d

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Shell-thickness control of hollow SiO2 nanoparticles through post-treatment using sol-gel technique toward efficient water confinement2021

    • Author(s)
      Tarutani Naoki、Honda Yuka、Hamakawa Risa、Uchikoshi Tetsuo、Ishigaki Takamasa
    • Journal Title

      Colloids and Surfaces A: Physicochemical and Engineering Aspects

      Volume: 629 Pages: 127501-127501

    • DOI

      10.1016/j.colsurfa.2021.127501

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Organic-Inorganic Hybrid Nanocrystal-based Cryogels with Size-Controlled Mesopores and Macropores2021

    • Author(s)
      Tarutani Naoki、Hashimoto Mana、Ishigaki Takamasa
    • Journal Title

      Langmuir

      Volume: 37 Issue: 9 Pages: 2884-2890

    • DOI

      10.1021/acs.langmuir.0c03112

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] 遷移金属水酸化物ナノ粒子の合成と電気化学特性の調査2022

    • Author(s)
      木村 奏太, 樽谷 直紀, 片桐 清文, 犬丸 啓
    • Organizer
      第60回セラミックス基礎科学討論会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 多元素を組み合わせた層状水酸化物ナノ粒子の合成2021

    • Author(s)
      樽谷 直紀, 平木 佑佳, 片桐 清文, 犬丸 啓
    • Organizer
      日本セラミックス協会第34回秋季シンポジウム
    • Related Report
      2021 Annual Research Report
  • [Presentation] 電気泳動堆積法によるコロイド粒子集積体の配列制御:電着ゾルと泳動条件の検討2021

    • Author(s)
      川口 堅大, 樽谷 直紀, 片桐 清文, 犬丸 啓
    • Organizer
      日本ゾル-ゲル学会第19回討論会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 多成分系水酸化物ナノ粒子の合成と合金化の試み2021

    • Author(s)
      平木 佑佳, 樽谷 直紀, 片桐 清文, 犬丸 啓
    • Organizer
      第11回CSJ化学フェスタ
    • Related Report
      2021 Annual Research Report
  • [Presentation] 水酸化物ナノ粒子の液相合成とメソ・マクロ構造体構築への利用2021

    • Author(s)
      樽谷 直紀
    • Organizer
      2021年日本化学会中国四国支部大会 高知大会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] ナノ粒子の液相合成とメソ・マクロ多孔体構築への利用2021

    • Author(s)
      樽谷 直紀
    • Organizer
      2021年度 第10回グリーンソサエティーセミナー
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Nb添加メカノケミカルTiO2粉末の熱処理挙動と光触媒活性2021

    • Author(s)
      鈴木大雅・小安智士・樽谷直紀・打越哲郎・石垣隆正
    • Organizer
      第59回セラミックス基礎科学討論会
    • Related Report
      2020 Research-status Report
  • [Presentation] 有機-無機ハイブリッド水酸化物ナノ粒子の粒子間結合を利用した熱安定なメソポーラス構造の構築2021

    • Author(s)
      樽谷 直紀・片桐 清文・犬丸 啓・石垣 隆正
    • Organizer
      日本セラミックス協会 2021年年会
    • Related Report
      2020 Research-status Report
  • [Presentation] 不均一な化学組成を持った Nb-Ti 系酸化物のメカノケミカル合成と光触媒活性の評価2021

    • Author(s)
      樽谷 直紀・片桐 清文・犬丸 啓・加藤 龍磨・石垣 隆正
    • Organizer
      日本セラミックス協会 2021年年会
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2023-01-30  

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