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Investigation of the anion order in Pb/Bi containing mixed anion compounds

Research Project

Project/Area Number 16K05731
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Inorganic chemistry
Research InstitutionKindai University (2019)
Chuo University (2016-2018)

Principal Investigator

Oka Kengo  近畿大学, 理工学部, 講師 (80602044)

Project Period (FY) 2016-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywordsアニオン複合化物 / 酸フッ化物 / アニオン秩序配列 / 負熱膨張 / トポタクティック / 複合アニオン化合物 / 精密構造解析 / 層状ペロブスカイト / アパタイト / 誘電材料 / リートベルト解析 / 誘電体物性 / 無機工業化学
Outline of Final Research Achievements

In this research project, we focused our attention on oxyfluorides containing Pb. We discovered new compounds Pb2Ti4O9F2 and Pb2Ti2O5.4F1.2. Precise structural analysis revealed the presence of O/F anion order in these materials. The anion order of oxide and fluoride ions is considered to be resulted from the anisotropic covalent bond arose from the 6s2 lone pair of Pb. We also studied the oxfluoride PbVO3-xFx, in which oxide ion is subustituted with fluoride ion. The substitution led structural transition that occurred under high pressure condition to undergo under ambient pressure. As the structural transition occurs under ambient pressure, we succeeded in observe large negative thermal expansion behavior of this compound.

Academic Significance and Societal Importance of the Research Achievements

新しい無機材料として、複数の異種アニオンを構造中に有するアニオン複合化物が注目を集めている。アニオン複合化物において、異種アニオン同士が結晶中でどのように配列するかを明らかにすることは、その特性を理解する上で重要である。本研究では、酸フッ化物を研究対象とし、酸化物イオンとフッ化物イオンの秩序配列に主に着目して研究を行った。結果、Pbの6s2孤立電子対に由来する異方的な共有結合を応用することで、アニオンの秩序配列が誘起されていることを示唆する結果が得られた。これは、今後のアニオン複合化物の物質デザイン指針の発展に貢献する重要な結果であり、今後の戦略的な材料開発へと繋がることが期待される。

Report

(5 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (22 results)

All 2020 2019 2018 2017 2016 Other

All Int'l Joint Research (1 results) Journal Article (11 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 11 results,  Open Access: 4 results,  Acknowledgement Compliant: 1 results) Presentation (10 results) (of which Int'l Joint Research: 2 results,  Invited: 3 results)

  • [Int'l Joint Research] ボーズ基礎科学研究センター/インド工科大学(インド)

    • Related Report
      2017 Research-status Report
  • [Journal Article] Light Absorption Properties and Electronic Band Structures of Lead‐Vanadium Oxyhalide Apatites Pb5(VO4)3X (X=F, Cl, Br, I)2020

    • Author(s)
      Masashi Nakamura, Kenji Oqmhula, Keishu Utimula, Miharu Eguchi, Kengo Oka, Kenta Hongo, Ryo Maezono, Kazuhiko Maeda*
    • Journal Title

      Chem Asian J.

      Volume: 15 Issue: 4 Pages: 540-545

    • DOI

      10.1002/asia.201901692

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Oxyfluoride Pb2Ti4O9F2 as a Stable Anode Material for Photoelectrochemical Water Oxidation2020

    • Author(s)
      K. Maeda, N. Hirayama, H. Nakata, H. Wakayama, and K. Oka
    • Journal Title

      The Journal of Physical Chemistry C

      Volume: 124 Issue: 3 Pages: 1844-1850

    • DOI

      10.1021/acs.jpcc.9b09969

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Negative thermal expansion in electron doped PbVO3-xFx2019

    • Author(s)
      Ogata Takahiro、Oka Kengo、Azuma Masaki
    • Journal Title

      Applied Physics Express

      Volume: 12 Issue: 2 Pages: 023005-023005

    • DOI

      10.7567/1882-0786/aafb9b

    • NAID

      210000135584

    • Related Report
      2019 Annual Research Report 2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Enhanced Negative Thermal Expansion Induced by Simultaneous Charge Transfer and Polar-Nonpolar Transitions2019

    • Author(s)
      Takumi Nishikubo, Yuki Sakai, Kengo Oka, Tetsu Watanuki, Akihiko Machida, Masaichiro Mizumaki, Koki Maebayashi, Takashi Imai, Takahiro Ogata, Keisuke Yokoyama, Yoichi Okimoto, Shin-ya Koshihara, Hajime Hojo, Takashi Mizokawa and Masaki Azuma
    • Journal Title

      J. Am. Chem. Soc.

      Volume: 141 Issue: 49 Pages: 19397-19403

    • DOI

      10.1021/jacs.9b10336

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Optimized negative thermal expansion induced by gradual intermetallic charge transfer in Bi1-xSbxNiO32018

    • Author(s)
      Nishikubo Takumi、Sakai Yuki、Oka Kengo、Mizumaki Masaichiro、Watanuki Tetsu、Machida Akihiko、Maejima Naoyuki、Ueda Shigenori、Mizokawa Takashi、Azuma Masaki
    • Journal Title

      Applied Physics Express

      Volume: 11 Issue: 6 Pages: 061102-061102

    • DOI

      10.7567/apex.11.061102

    • NAID

      210000136216

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] A Stable, Narrow-Gap Oxyfluoride Photocatalyst for Visible-Light Hydrogen Evolution and Carbon Dioxide Reduction2018

    • Author(s)
      Kuriki Ryo、Ichibha Tom、Hongo Kenta、Lu Daling、Maezono Ryo、Kageyama Hiroshi、Ishitani Osamu、Oka Kengo、Maeda Kazuhiko
    • Journal Title

      Journal of the American Chemical Society

      Volume: 140 Issue: 21 Pages: 6648-6655

    • DOI

      10.1021/jacs.8b02822

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Synthesis, Crystal Structure, and Optical Properties of Layered Perovskite Scandium Oxychlorides: Sr2ScO3Cl, Sr3Sc2O5Cl2, and Ba3Sc2O5Cl22018

    • Author(s)
      Su Yu、Tsujimoto Yoshihiro、Fujii Kotaro、Tatsuta Makoto、Oka Kengo、Yashima Masatomo、Ogino Hiraku、Yamaura Kazunari
    • Journal Title

      Inorganic Chemistry

      Volume: 57 Issue: 9 Pages: 5615-5623

    • DOI

      10.1021/acs.inorgchem.8b00573

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Light Absorption Properties and Electronic Band Structures of Lead Titanium Oxyfluoride Photocatalysts Pb2Ti4O9F2 and Pb2Ti2O5.4F1.22018

    • Author(s)
      Wakayama Haruki、Utimula Keishu、Ichibha Tom、Kuriki Ryo、Hongo Kenta、Maezono Ryo、Oka Kengo、Maeda Kazuhiko
    • Journal Title

      The Journal of Physical Chemistry C

      Volume: 122 Issue: 46 Pages: 26506-26511

    • DOI

      10.1021/acs.jpcc.8b08953

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Incorporation of sulfur ions into La2-xSrxCuO4 superconducting cuprate2018

    • Author(s)
      Oka Kengo、Shirota Kensuke、Sato Yoshiki、Oh-ishi Katsuyoshi
    • Journal Title

      Journal of Asian Ceramic Societies

      Volume: 6 Issue: 3 Pages: 284-288

    • DOI

      10.1080/21870764.2018.1507611

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Experimental and Theoretical Studies of the Metallic Conductivity in Cubic PbVO3 under High Pressure2018

    • Author(s)
      Oka Kengo、Yamauchi Touru、Kanungo Sudipta、Shimazu Taku、Oh-ishi Katsuyohi、Uwatoko Yoshiya、Azuma Masaki、Saha-Dasgupta Tanusri
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 87 Issue: 2 Pages: 024801-024801

    • DOI

      10.7566/jpsj.87.024801

    • NAID

      210000134709

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Temperature-Independent, Large Dielectric Constant Induced by Vacancy and Partial Anion Order in the Oxyfluoride Pyrochlore Pb2Ti2O6-δF2δ2016

    • Author(s)
      Kengo Oka, Hajime Hojo, Masaki Azuma, and Katsuyoshi Oh-ishi
    • Journal Title

      Chemistry of Materials

      Volume: 28 Issue: 15 Pages: 5554-5559

    • DOI

      10.1021/acs.chemmater.6b02509

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] 酸フッ化物におけるアニオン秩序と機能の発現2019

    • Author(s)
      岡研吾
    • Organizer
      応用物理学会 秋季学術講演会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] 新規Ruddlesden-Popper型層状ペロブスカイトPb3Fe2O5F2の構造および磁気転移2019

    • Author(s)
      岡研吾, 林直顕, 高野幹夫,草野圭弘,大石克嘉
    • Organizer
      日本物理学会第74次年次大会
    • Related Report
      2018 Research-status Report
  • [Presentation] Observation of anion order in the Pb-Ti-O-F oxyfluoride system2018

    • Author(s)
      Kengo Oka, Hajime Hojo, Masaki Azuma, Katsuyoshi Oh-ishi
    • Organizer
      ICPAC Langkawi
    • Related Report
      2018 Research-status Report
  • [Presentation] フッ化物アパタイトにおけるイオン伝導2018

    • Author(s)
      岡 研吾・大石 克嘉・ 舩山 耕生・植田 紘一郎・稲熊 宜之
    • Organizer
      日本セラミックス協会第31回秋期シンポジウム
    • Related Report
      2018 Research-status Report
  • [Presentation] フッ化アパタイトA5V3O12F (A = Pb, Ba, Sr)におけるフッ素脱離吸収挙動2018

    • Author(s)
      岡研吾・大石克嘉、舩山耕生・植田紘一郎・稲熊宜之
    • Organizer
      日本セラミックス協会2018年会
    • Related Report
      2017 Research-status Report
  • [Presentation] 新規酸フッ化物層状ペロブスカイトPb3Fe2O5F2の合成と結晶構造2017

    • Author(s)
      岡 研吾・大石 克嘉 ・ 林 直顕・高野 幹夫
    • Organizer
      日本セラミックス協会2017年会
    • Place of Presentation
      日本大学
    • Year and Date
      2017-03-17
    • Related Report
      2016 Research-status Report
  • [Presentation] 新規酸フッ化物層状ペロブスカイトPb3Fe2O5F2の磁性2017

    • Author(s)
      岡研吾、大石克嘉、林直顕、高野幹夫
    • Organizer
      日本セラミックス協会秋季シンポジウム
    • Related Report
      2017 Research-status Report
  • [Presentation] ressure induced large volume collapse in PbVO3 and its potential for negative thermal expansion2017

    • Author(s)
      岡研吾、大石克嘉、山内徹、上床美也、S. Kanuango, Y. Sakai, 尾形晃宏, 上床美也, T. Saha-Dasgupta, 東正樹
    • Organizer
      2nd International Symposium on Negative Thermal Expansion and Related Materials
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] パイロクロア酸フッ化物Pb2Ti2O5.4F1.2におけるアニオン秩序2016

    • Author(s)
      岡 研吾・大石 克嘉・北條 元・東 正樹
    • Organizer
      日本セラミックス協会 第29回秋季シンポジウム
    • Place of Presentation
      広島大学
    • Year and Date
      2016-09-07
    • Related Report
      2016 Research-status Report
  • [Presentation] Temperature-Independent,Large Dielectric Constant Induced by Vacancy and Partial Anion Order in the Oxyfluoride Pyrochlore Pb2Ti2O6-δF2δ2016

    • Author(s)
      Kengo Oka, Katsuyoshi Oh-ishi, Hajime Hojo, Masaki Azuma
    • Organizer
      ISAMR2016
    • Place of Presentation
      Sun Moon Lake
    • Year and Date
      2016-08-11
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2016-04-21   Modified: 2021-02-19  

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