K2‑SPRING Q-ENERGY Innovator Unit グリーンイノベーションユニット
Jacqueline Andrea Hidalgo Jiménez Photo
hidalgo_jacqueline.jpg
2022 Cohort 2022年度
Q-ENERGY Fellowship · Cohort 2022 Q-ENERGYフェローシップ · 2022年度

Jacqueline Andrea Hidalgo Jiménez

Jacqueline Andrea Hidalgo Jiménez

Completed修了
Affiliation
所属
Graduate School of Integrated Frontier Sciences
統合新領域学府
Major / Department
専攻
Department of Automotive Science
オートモーティブサイエンス専攻
Supervisor
指導教員
Prof. Kaveh EDALATIEdalati Kaveh 教授
§ 01

Doctoral research

博士 研究

Main PhD work 博士課程主研究

High-entropy ceramics as new family of photocatalysts for hydrogen production and CO2 conversion: Ab initio calculations and experiments

High-entropy ceramics as new family of photocatalysts for hydrogen production and CO2 conversion: Ab initio calculations and experiments

The utilization of fossil fuels has caused global warming, and transportation is one of the most contaminated industries. Hydrogen utilization and CO2 conversion to functional products are two alternatives to reduce emissions. Both processes can be carried out through photocatalysis which uses light in the presence of a semiconductor to achieve a chemical reaction. Among several materials, high entropy ceramics demonstrated good properties as photocatalysts.
Objective:
A. Design new high entropy ceramics with outstanding photocatalytic activity.
B. Clarify the mechanism of photocatalytic activity and band structure of materials
C. Compare DFT calculations with experimental results

The utilization of fossil fuels has caused global warming, and transportation is one of the most contaminated industries. Hydrogen utilization and CO2 conversion to functional products are two alternatives to reduce emissions. Both processes can be carried out through photocatalysis which uses light in the presence of a semiconductor to achieve a chemical reaction. Among several materials, high entropy ceramics demonstrated good properties as photocatalysts.
Objective:
A. Design new high entropy ceramics with outstanding photocatalytic activity.
B. Clarify the mechanism of photocatalytic activity and band structure of materials
C. Compare DFT calculations with experimental results

§ 02

Research achievements

研究 成果

Research Papers論文
  1. Hidalgo-Jiménez J., Akbay T., Ishihara T., Edalati K. “Active high-entropy photocatalyst designed by incorporating alkali metals to achieve d0+d10+s0 cationic configurations and wide electronegativity mismatch” Acta Materialia, Vol. 302, 121632 (2026) doi:10.1016/j.actamat.2025.121632
  2. Edalati K., Hidalgo-Jiménez J., Tam Nguyen T. “High-Pressure Torsion-Induced Transformation of Adenosine Monophosphate: Insights into Prebiotic Chemistry of RNA by Astronomical Impacts” Astrobiology, Vol. 26, pp. 1–9 (2026) doi:10.1177/15311074251412318
  3. Nguyen T.T., Hidalgo-Jiménez J., Edalati K. “High-entropy oxide photocatalysts for green ammonia synthesis from nitrogen fixation in water” Scripta Materialia, Vol. 269, 116931 (2025) doi:10.1016/j.scriptamat.2025.116931
  4. Edalati K., Hidalgo-Jiménez J., Nguyen T.T., Sena H., Enikeev N., Rogl G., Levitas V.I., Horita Z., Zehetbauer M.J., Valiev R.Z., Langdon T.G. “Severe Plastic Deformation of Ceramics by High-Pressure Torsion: Review of Principles and Applications” Annual Review of Materials Research, Vol. 55, pp. 89–124 (2025) doi:10.1146/annurev-matsci-080423-122701
  5. Hidalgo-Jiménez J., Akbay T., Sauvage X., Ishihara T., Edalati K. “Photocatalytic carbon dioxide methanation by high-entropy oxides: Significance of work function” Applied Catalysis B: Environmental, Vol. 371, 125259 (2025) doi:10.1016/j.apcatb.2025.125259
  6. Hidalgo-Jiménez J., Akbay T., Watanabe M., Saito K., Guo Q., Ishihara T., Edalati K. “Entropy-stabilized oxides with d10 and s0p0 cations as heterostructured photocatalysts with high work function: Experiments and first-principles calculations” Journal of Energy Chemistry, Vol. 111, pp. 954–968 (2025) doi:10.1016/j.jechem.2025.08.033
  7. Hai H.T.N., Hidalgo-Jiménez J., Edalati K. “Boosting hydrogen and methane formation on a high-entropy photocatalyst by integrating atomic d0/d10 electronic junctions and microscopic P/N heterojunctions” International Journal of Hydrogen Energy, Vol. 162, 150762 (2025) doi:10.1016/j.ijhydene.2025.150762
  8. Nguyen T.T., Hidalgo-Jiménez J., Sauvage X., Saito K., Guo Q., Edalati K. “Phase and sulfur vacancy engineering in cadmium sulfide for boosting hydrogen production from catalytic plastic waste photoconversion” Chemical Engineering Journal, Vol. 504, 158730 (2025) doi:10.1016/j.cej.2024.158730
  9. Hidalgo-Jiménez J., Akbay T., Sauvage X., van Eijck L., Watanabe M., Huot J., Ishihara T., Edalati K. “Hybrid d0 and d10 electronic configurations promote photocatalytic activity of high-entropy oxides for CO2 conversion and water splitting” Journal of Materials Chemistry A, Vol. 12, pp. 31589–31602 (2024) doi:10.1039/d4ta04689g
  10. Katai M., Edalati P., Hidalgo-Jiménez J., Shundo Y., Akbay T., Ishihara T., Arita M., Fuji M., Edalati K. “Black brookite rich in oxygen vacancies as an active photocatalyst for CO2 conversion: Experiments and first-principles calculations” Journal of Photochemistry and Photobiology A: Chemistry, Vol. 449, 115409 (2024) doi:10.1016/j.jphotochem.2023.115409
  11. Edalati K., Hidalgo-Jiménez J., Nguyen T.T., Watanabe M., Taniguchi I. “High-Pressure Torsion Processing of Serine and Glutamic Acid: Understanding Mechanochemical Behavior of Amino Acids under Astronomical Impacts” Advanced Engineering Materials, Vol. 26, 2302267 (2024) doi:10.1002/adem.202302267
  12. Hidalgo-Jiménez J., Akbay T., Ishihara T., Edalati K. “Investigation of a high-entropy oxide photocatalyst for hydrogen generation by first-principles calculations coupled with experiments: Significance of electronegativity” Scripta Materialia, Vol. 250, 116205 (2024) doi:10.1016/j.scriptamat.2024.116205
  13. Hidalgo-Jiménez J., Akbay T., Ikeda Y., Ishihara T., Edalati K. “Mechanism of anatase-to-columbite TiO2 phase transformation via sheared phases: first-principles calculations and high-pressure torsion experiments” Journal of Materials Science, Vol. 59, pp. 5995–6007 (2024) doi:10.1007/s10853-023-09206-8
  14. Hidalgo-Jiménez J., Akbay T., Ishihara T., Edalati K. “Understanding high photocatalytic activity of the TiO2 high-pressure columbite phase by experiments and first-principles calculations” Journal of Materials Chemistry A, Vol. 11, pp. 23523–23535 (2023) doi:10.1039/d3ta04198k
  15. Hidalgo-Jiménez J., Cubero-Sesin J.M., Edalati K., Khajavi S., Huot J. “Effect of high-pressure torsion on first hydrogenation of Laves phase Ti0.5Zr0.5(Mn1−xFex)Cr (x = 0, 0.2 and 0.4) high entropy alloys” Journal of Alloys and Compounds, Vol. 969, 172243 (2023) doi:10.1016/j.jallcom.2023.172243
  16. Hidalgo-Jimenez J., Wang Q., Edalati K., Cubero-Sesín J.M., Razavi-Khosroshahi H., Ikoma Y., Gutiérrez-Fallas D., Dittel-Meza F.A., Rodríguez-Rufino J.C., Fuji M., Horita Z. “Phase transformations, vacancy formation and variations of optical and photocatalytic properties in TiO2-ZnO composites by high-pressure torsion” International Journal of Plasticity, Vol. 124, pp. 170–185 (2020) doi:10.1016/j.ijplas.2019.08.010
Conference Presentations学会発表
  1. Jacqueline Andrea Hidalgo Jiménez, “High-entropy oxides for solar-driven photocatalysis: a systematic design approach,” 13th Workshop, Decarbonization Society in Kyushu (Q-DeCS), Kyushu University, Ito Campus, May 2025. [Domestic, Oral]
  2. Jacqueline Andrea Hidalgo Jiménez, 「太陽光駆動光触媒反応のためのハイエントロピー酸化物：体系的な設計アプローチ」, 九州脱炭素化研究会 第13回ワークショップ, 九州大学伊都キャンパス, 2025年5月. [国内, 口頭]
Other Achievementsその他の業績
  1. Coming soon準備中
Programme & institutional affiliation プログラム・機関情報
K2-SPRING JST SPRING programmeJSTスプリングプログラム
Q-PIT Unit coordinatorユニットコーディネーター
Q-Energy Innovator Unit Q-Energy Innovator Unitグリーンイノベーションユニット
Kyushu University Host universityホスト大学