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

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)TiO3 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 & 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 NiO1?δ, PCBM, and PTAA/MAPbI3?xClx 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 & 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

SEO Okkyun 徐 玉均

Seo Okkyun 徐 玉均

Research Projects

Research Products

Co-Researchers

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

Project Period (FY)

Research Category

Review Section

Research Institution

[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)

Journal Title

DOI

Data Source

[Journal Article] Analysis of Iodide Transport on Methyl Ammonium Lead Iodide Perovskite Solar Cell Structure Through Operando Hard X-ray Photoelectron Spectroscopy2023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Compositional dependence of structures and hydrogen evolution reaction activity of platinum-group-metal quinary RuRhPdIrPt alloy nanoparticles2022

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Electronic states of gallium oxide epitaxial thin films and related atomic arrangement2022

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Near-UV light emitting diode with on-chip photocatalysts for purification applications2022

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Noble-Metal High-Entropy-Alloy Nanoparticles: Atomic-Level Insight into the Electronic Structure2022

Author(s)

Journal Title

DOI

Data Source

[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)

Journal Title

DOI

Data Source

[Journal Article] Hydrogen absorption and diffusion behaviors in cube-shaped palladium nanoparticles revealed by ambient-pressure X-ray photoelectron spectroscopy2022

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Behavior of the monoclinic order in VO2 thin films grown on sapphire near the metal-insulator transition2022

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Suppression of Charging Effect of Insulating Materials in Hard X-ray Photoelectron Spectroscopy2022

Author(s)

Journal Title

DOI

ISSN

Year and Date

Language

Data Source

[Journal Article] Highly-crystalline 6 inch free-standing GaN observed using X-ray diffraction topography2021

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Mechanism of Hydrogen Storage and Structural Transformation in Bimetallic Pd?Pt Nanoparticles2021

Author(s)

Journal Title

DOI

Data Source

[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)

Journal Title

DOI

Data Source

[Journal Article] Total x-ray scattering setup for crystalline particles at SPring-8 BL15XU NIMS beamline2021

SEO Okkyun 徐玉均

Seo Okkyun 徐玉均