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SEO Okkyun  徐 玉均

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Seo Okkyun  徐 玉均

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Researcher Number 30814206
Other IDs
Affiliation (Current) 2025: 公益財団法人高輝度光科学研究センター, 分光・イメージング推進室, 研究員
2025: 国立研究開発法人物質・材料研究機構, 技術開発・共用部門, NIMSポスドク研究員
Affiliation (based on the past Project Information) *help 2021 – 2022: 公益財団法人高輝度光科学研究センター, 産業利用・産学連携推進室, テニュアトラック研究員
2020: 国立研究開発法人物質・材料研究機構, 技術開発・共用部門, NIMSポスドク研究員
Review Section/Research Field
Principal Investigator
Basic Section 27020:Chemical reaction and process system engineering-related
Keywords
Principal Investigator
Synchrotron X-ray / Catalytic reaction / Ambient pressure XPS / XAFS / EXAFS / H absorption / three-way catalysts / H2 absorption / CO oxidation / metal nanoparticles / in-situ XAFS / AP-XPS
  • Research Projects

    (1 results)
  • Research Products

    (27 results)
  • Co-Researchers

    (4 People)
  •  Ambient-Pressure synchrotron X-ray study to reveal atomic-scale mechanism of CO oxidation and three-way catalytic reaction of Ru based solid-solution nanoparticlesPrincipal Investigator

    • Principal Investigator
      Seo Okkyun
    • Project Period (FY)
      2020 – 2022
    • Research Category
      Grant-in-Aid for Early-Career Scientists
    • Review Section
      Basic Section 27020:Chemical reaction and process system engineering-related
    • Research Institution
      Japan Synchrotron Radiation Research Institute
      National Institute for Materials Science

All 2023 2022 2021 2020

All Journal Article Presentation

  • [Journal Article] Control of atomic ordering of LiNiO2 thin films on a sapphire substrate from rock-salt to layered structure using uniaxial compression2023

    • Author(s)
      Seo Okkyun、Kim Jaemyung、Tang Jiayi、Kumara L.S.R.、Kimoto Koji、Miki Kazushi、Matsuda Akifumi、Yoshimoto Mamoru、Sakata Osami
    • Journal Title

      Journal of Alloys and Compounds

      Volume: 945 Pages: 169177-169177

    • DOI

      10.1016/j.jallcom.2023.169177

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K04868, KAKENHI-PROJECT-18K18995, KAKENHI-PROJECT-20K15083
  • [Journal Article] Analysis of Iodide Transport on Methyl Ammonium Lead Iodide Perovskite Solar Cell Structure Through Operando Hard X-ray Photoelectron Spectroscopy2023

    • Author(s)
      Gueye Ibrahima、Shirai Yasuhiro、Nagata Takahiro、Tsuchiya Takashi、Khadka Dhruba B.、Yanagida Masatoshi、Seo Okkyun、Miyano Kenjiro、Sakata Osami
    • Journal Title

      Chemistry of Materials

      Volume: 35 Issue: 5 Pages: 1948-1960

    • DOI

      10.1021/acs.chemmater.2c03162

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K15083
  • [Journal Article] Compositional dependence of structures and hydrogen evolution reaction activity of platinum-group-metal quinary RuRhPdIrPt alloy nanoparticles2022

    • Author(s)
      Maruta Yuto、Kusada Kohei、Wu Dongshuang、Yamamoto Tomokazu、Toriyama Takaaki、Matsumura Syo、Seo Okkyun、Yasuno Satoshi、Kawaguchi Shogo、Sakata Osami、Kubota Yoshiki、Kitagawa Hiroshi
    • Journal Title

      Chemical Communications

      Volume: 58 Issue: 44 Pages: 6421-6424

    • DOI

      10.1039/d2cc01866g

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-21H01762, KAKENHI-PROJECT-20K15083, KAKENHI-PROJECT-20H05623
  • [Journal Article] Electronic states of gallium oxide epitaxial thin films and related atomic arrangement2022

    • Author(s)
      Chen Yanna、Sakata Osami、Morita Hiroyuki、Matsuda Akifumi、Jia Fanhao、Seo Okkyun、Kumara Loku Singgappulige Rosantha、Ina Toshiaki、Kobayashi Eiichi、Kim Jaemyung、Song Chulho、Hiroi Satoshi、Palina Natalia、Lou Yanfang、Ren Wei、Yoshimoto Mamoru
    • Journal Title

      Applied Surface Science

      Volume: 578 Pages: 151943-151943

    • DOI

      10.1016/j.apsusc.2021.151943

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K04868, KAKENHI-PROJECT-20K15083
  • [Journal Article] Near-UV light emitting diode with on-chip photocatalysts for purification applications2022

    • Author(s)
      Leem Young-Chul、Myoung NoSoung、Hong Sang-Hyun、Jeong Sehee、Seo Okkyun、Park Seong-Ju、Yim Sang-Youp、Kim Joon Heon
    • Journal Title

      Nanoscale Advances

      Volume: 4 Issue: 17 Pages: 3585-3591

    • DOI

      10.1039/d2na00305h

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K15083
  • [Journal Article] Noble-Metal High-Entropy-Alloy Nanoparticles: Atomic-Level Insight into the Electronic Structure2022

    • Author(s)
      Wu Dongshuang、Kusada Kohei、Nanba Yusuke、Koyama Michihisa、Yamamoto Tomokazu、Toriyama Takaaki、Matsumura Syo、Seo Okkyun、Gueye Ibrahima、Kim Jaemyung、Rosantha Kumara Loku Singgapulige、Sakata Osami、Kawaguchi Shogo、Kubota Yoshiki、Kitagawa Hiroshi
    • Journal Title

      Journal of the American Chemical Society

      Volume: 144 Issue: 8 Pages: 3365-3369

    • DOI

      10.1021/jacs.1c13616

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-21H01762, KAKENHI-PROJECT-20K15083, KAKENHI-PROJECT-20H05623
  • [Journal Article] Polar-axis-oriented epitaxial tetragonal (Bi,K)TiO<sub>3</sub> films with large remanent polarization deposited below Curie temperature by a hydrothermal method2022

    • Author(s)
      Ito Yoshiharu、Tateyama Akinori、Kubota Rurika、Shiraishi Takahisa、Shimizu Takao、Kim Jaemyung、Seo Okkyun、Sakata Osami、Kurosawa Minoru、Funakubo Hiroshi
    • Journal Title

      Applied Physics Letters

      Volume: 120 Issue: 2 Pages: 022903-022903

    • DOI

      10.1063/5.0075014

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K15083
  • [Journal Article] Hydrogen absorption and diffusion behaviors in cube-shaped palladium nanoparticles revealed by ambient-pressure X-ray photoelectron spectroscopy2022

    • Author(s)
      Tang Jiayi、Seo Okkyun、Rocabado David S. Rivera、Koitaya Takanori、Yamamoto Susumu、Nanba Yusuke、Song Chulho、Kim Jaemyung、Yoshigoe Akitaka、Koyama Michihisa、Dekura Shun、Kobayashi Hirokazu、Kitagawa Hiroshi、Sakata Osami、Matsuda Iwao、Yoshinobu Jun
    • Journal Title

      Applied Surface Science

      Volume: 587 Pages: 152797-152797

    • DOI

      10.1016/j.apsusc.2022.152797

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K15240, KAKENHI-PROJECT-18K04868, KAKENHI-PROJECT-20K05338, KAKENHI-PROJECT-20K15083, KAKENHI-PROJECT-20H05623
  • [Journal Article] Behavior of the monoclinic order in VO2 thin films grown on sapphire near the metal-insulator transition2022

    • Author(s)
      Soo Ha Sung、Choi Sukjune、Jun Oh Ho、Choi Yesul、Kwon Ouyoung、Jo Yong-Ryun、Hwa Cho In、Kim Jaemyung、Seo Okkyun、Kim Jin-Woo、Kim Bong-Joong、Park Sungkyun、Chol Kang Hyon、Young Noh Do
    • Journal Title

      Applied Surface Science

      Volume: 595 Pages: 153547-153547

    • DOI

      10.1016/j.apsusc.2022.153547

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K15083
  • [Journal Article] Suppression of Charging Effect of Insulating Materials in Hard X-ray Photoelectron Spectroscopy2022

    • Author(s)
      Yasuno Satoshi、Seo Okkyun、Kumara L. S. R.
    • Journal Title

      e-J. Surf. Sci. Nanotechnol.

      Volume: 20 Issue: 3 Pages: 180-185

    • DOI

      10.1380/ejssnt.2022-025

    • ISSN
      1348-0391
    • Year and Date
      2022-06-09
    • Language
      English
    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K15083
  • [Journal Article] Highly-crystalline 6 inch free-standing GaN observed using X-ray diffraction topography2021

    • Author(s)
      Kim Jaemyung、Seo Okkyun、Kumara L. S. R.、Nabatame Toshihide、Koide Yasuo、Sakata Osami
    • Journal Title

      CrystEngComm

      Volume: 23 Issue: 7 Pages: 1628-1633

    • DOI

      10.1039/d0ce01572e

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K15083
  • [Journal Article] Mechanism of Hydrogen Storage and Structural Transformation in Bimetallic Pd?Pt Nanoparticles2021

    • Author(s)
      Tayal Akhil、Seo Okkyun、Kim Jaemyung、Kobayashi Hirokazu、Yamamoto Tomokazu、Matsumura Syo、Kitagawa Hiroshi、Sakata Osami
    • Journal Title

      ACS Applied Materials &amp; Interfaces

      Volume: 13 Issue: 20 Pages: 23502-23512

    • DOI

      10.1021/acsami.0c22432

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K04868, KAKENHI-PROJECT-20K15083
  • [Journal Article] Chemical and Electronic Investigation of Buried NiO<sub>1?δ</sub>, PCBM, and PTAA/MAPbI<sub>3?<i>x</i></sub>Cl<sub><i>x</i></sub> Interfaces Using Hard X-ray Photoelectron Spectroscopy and Transmission Electron Microscopy2021

    • Author(s)
      Gueye Ibrahima、Shirai Yasuhiro、Khadka Dhruba B.、Seo Okkyun、Hiroi Satoshi、Yanagida Masatoshi、Miyano Kenjiro、Sakata Osami
    • Journal Title

      ACS Applied Materials &amp; Interfaces

      Volume: 13 Issue: 42 Pages: 50481-50490

    • DOI

      10.1021/acsami.1c11215

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K04868, KAKENHI-PROJECT-20K15083
  • [Journal Article] Total x-ray scattering setup for crystalline particles at SPring-8 BL15XU NIMS beamline2021

    • Author(s)
      Seo Okkyun、Kumara L. S. R.、Kim Jaemyung、Hiroi Satoshi、Kusada Kohei、Kitagawa Hiroshi、Sakata Osami
    • Journal Title

      Review of Scientific Instruments

      Volume: 92 Issue: 11 Pages: 113905-113905

    • DOI

      10.1063/5.0067938

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-21H01762, KAKENHI-PROJECT-18K04868, KAKENHI-PROJECT-20K15083
  • [Journal Article] Effects of heat-treatment atmosphere and temperature on cobalt species in Co/Al2O3 catalyst for propane dehydrogenation2021

    • Author(s)
      Jeon Namgi、Oh Jungmok、Tayal Akhil、Jeong Beomgyun、Seo Okkyun、Kim Sujin、Chung Iljun、Yun Yongju
    • Journal Title

      Journal of Catalysis

      Volume: 404 Pages: 1007-1016

    • DOI

      10.1016/j.jcat.2021.10.035

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K15083
  • [Journal Article] Investigation of Local Structure and Enhanced Thermal Stability of Ir-Doped PdRu Nanoparticles for Three-Way Catalytic Applications2021

    • Author(s)
      Tayal Akhil、Seo Okkyun、Kim Jaemyung、Kusada Kohei、Kitagawa Hiroshi、Sakata Osami
    • Journal Title

      The Journal of Physical Chemistry C

      Volume: 125 Issue: 37 Pages: 20583-20591

    • DOI

      10.1021/acs.jpcc.1c05929

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-21H01762, KAKENHI-PROJECT-18K04868, KAKENHI-PROJECT-20K15083
  • [Journal Article] Efficient overall water splitting in acid with anisotropic metal nanosheets2021

    • Author(s)
      Wu Dongshuang、Kusada Kohei、Yoshioka Satoru、Yamamoto Tomokazu、Toriyama Takaaki、Matsumura Syo、Chen Yanna、Seo Okkyun、Kim Jaemyung、Song Chulho、Hiroi Satoshi、Sakata Osami、Ina Toshiaki、Kawaguchi Shogo、Kubota Yoshiki、Kobayashi Hirokazu、Kitagawa Hiroshi
    • Journal Title

      Nature Communications

      Volume: 12 Issue: 1 Pages: 1145-1145

    • DOI

      10.1038/s41467-021-20956-4

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PUBLICLY-19H05170, KAKENHI-PROJECT-20K15083
  • [Journal Article] Investigation of microstructure and hydrogen absorption properties of bulk immiscible AgRh alloy nanoparticles2021

    • Author(s)
      Tayal Akhil、Seo Okkyun、Kim Jaemyung、Kusada Kohei、Kobayashi Hirokazu、Kitagawa Hiroshi、Sakata Osami
    • Journal Title

      Journal of Alloys and Compounds

      Volume: 869 Pages: 159268-159268

    • DOI

      10.1016/j.jallcom.2021.159268

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K04868, KAKENHI-PROJECT-20K15083
  • [Journal Article] Non-oxidative propane dehydrogenation over alumina-supported Co-V oxide catalysts2021

    • Author(s)
      Jeon Namgi、Seo Okkyun、Oh Jungmok、Park Jisu、Chung Iljun、Kim Jaemyung、Sakata Osami、Tayal Akhil、Yun Yongju
    • Journal Title

      Applied Catalysis A: General

      Volume: 614 Pages: 118036-118036

    • DOI

      10.1016/j.apcata.2021.118036

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K15083
  • [Journal Article] Highly Stable and Active Solid‐Solution‐Alloy Three‐Way Catalyst by Utilizing Configurational‐Entropy Effect2021

    • Author(s)
      Kusada Kohei, Wu Dongshuang, Nanba Yusuke, Koyama Michihisa, Yamamoto Tomokazu, Tran Xuan Quy, Toriyama Takaaki, Matsumura Syo, Ito Ayano, Sato Katsutoshi, Nagaoka Katsutoshi, Seo Okkyun, Song Chulho, Chen Yanna, Palina Natalia, Kumara Loku Singgappulige Rosantha, Hiroi Satoshi, Sakata Osami, Kitagawa Hiroshi et al.
    • Journal Title

      Advanced Materials

      Volume: in press Issue: 16 Pages: 2005206-2005206

    • DOI

      10.1002/adma.202005206

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PUBLICLY-19H05170, KAKENHI-PROJECT-20K15083
  • [Journal Article] Crystalline to amorphous transformation in solid-solution alloy nanoparticles induced by boron doping2020

    • Author(s)
      Kobayashi Keigo、Kusada Kohei、Wu Dongshuang、Ogiwara Naoki、Kobayashi Hirokazu、Haruta Mitsutaka、Kurata Hiroki、Hiroi Satoshi、Seo Okkyun、Song Chulho、Chen Yanna、Kim Jaemyung、Tayal Akhil、Sakata Osami、Ohara Koji、Honma Tetsuo、Kitagawa Hiroshi
    • Journal Title

      Chemical Communications

      Volume: 56 Issue: 85 Pages: 12941-12944

    • DOI

      10.1039/d0cc05418f

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K15083, KAKENHI-PUBLICLY-19H05170, KAKENHI-PROJECT-18J23021, KAKENHI-PROJECT-19K23648
  • [Journal Article] Hydrogen absorption and desorption on Rh nanoparticles revealed by in situ dispersive X-ray absorption fine structure spectroscopy2020

    • Author(s)
      Song Chulho、Seo Okkyun、Matsumura Daiju、Hiroi Satoshi、Cui Yi-Tao、Kim Jaemyung、Chen Yanna、Tayal Akhil、Kusada Kohei、Kobayashi Hirokazu、Kitagawa Hiroshi、Sakata Osami
    • Journal Title

      RSC Advances

      Volume: 10 Issue: 34 Pages: 19751-19758

    • DOI

      10.1039/d0ra03322g

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K04868, KAKENHI-PROJECT-20K15083
  • [Journal Article] Modifying the crystal structures of Fe2O3-doped NiO epitaxial thin films grown at room temperature by controlling the oxygen partial pressure2020

    • Author(s)
      Seo Okkyun、Tayal Akhil、Kim Jaemyung、Song Chulho、Katsuya Yoshio、Sakata Osami、Tang Jiayi、Lee Nodo、Kim Yong Tae、Ikeya Yuki、Takano Shiori、Matsuda Akifumi、Yoshimoto Mamoru
    • Journal Title

      Applied Surface Science

      Volume: 533 Pages: 147432-147432

    • DOI

      10.1016/j.apsusc.2020.147432

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K04868, KAKENHI-PROJECT-20K15083
  • [Journal Article] On the electronic structure and hydrogen evolution reaction activity of platinum group metal-based high-entropy-alloy nanoparticles2020

    • Author(s)
      Wu Dongshuang、Kusada Kohei、Yamamoto Tomokazu、Toriyama Takaaki、Matsumura Syo、Gueye Ibrahima、Seo Okkyun、Kim Jaemyung、Hiroi Satoshi、Sakata Osami、Kawaguchi Shogo、Kubota Yoshiki、Kitagawa Hiroshi
    • Journal Title

      Chemical Science

      Volume: 11 Issue: 47 Pages: 12731-12736

    • DOI

      10.1039/d0sc02351e

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K15083, KAKENHI-PUBLICLY-19H05170
  • [Presentation] Stacking fault density of fcc metal nanoparticles analyzed by Rietveld method2022

    • Author(s)
      Okkyun Seo, Osami Sakata
    • Organizer
      The 17th Asian Crystallographi Association
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K15083
  • [Presentation] Oxidation/reduction behaviors of PdRu solid-solution nanoparticles under three-way catalytic reaction conditions2021

    • Author(s)
      Okkyun Seo, Akhil Tayal, Jaemyung Kim, Kohei Kusada, Jiayi Tang, Hirokazu Kobayashi, Hiroshi Kitagawa, and Osami Sakata
    • Organizer
      Materials Research Meeting 2021
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K15083
  • [Presentation] Hard X-ray photoelectron spectroscopy at BL46XU beamline of SPring-8: present and the future2021

    • Author(s)
      Okkyun Seo, Satoshi Yasuno
    • Organizer
      The 12th International Conference on Advanced Materials and Devices
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K15083
  • 1.  草田 康平
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 4 results
  • 2.  坂田 修身
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 7 results
  • 3.  北川 宏
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 2 results
  • 4.  出倉 駿
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 1 results

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