Jihoon Choi
Jihoon Choi
Ph.D. | Postdoctoral Researcher
Korea Research Institute of Chemical Technology (KRICT) · Daejeon, South Korea
About

I am a Postdoctoral Researcher at the Hydrogen Energy Research Center, KRICT, working on selective membrane design for anion exchange membrane water electrolysis. Previously, I completed my Ph.D. and Postdoctoral Fellowship at KAIST under Prof. Dong-Yeun Koh in the Membranes, Materials, Machine Intelligence Laboratory (MMML), where I focused on polymer membranes for organic solvent nanofiltration and complex mixture separations.

Education
2021.03 – 2025.02

Ph.D. in Chemical & Biomolecular Engineering

Dissertation: Separation and Fractionation of Organic Solvent-Based Mixtures with Polymer Nanofiltration Membranes. Advisor: Prof. Dong-Yeun Koh, MMML.

2019.03 – 2021.02

M.S. in Chemical & Biomolecular Engineering

Advisor: Prof. Dong-Yeun Koh, MMML.

2015.03 – 2019.02

B.S. in Chemical & Biomolecular Engineering

Research Interests

Membrane-based Separation & Transport

  • Ion transport and selectivity in anion exchange membranes
  • Organic solvent nanofiltration for complex molecular separation

Membrane Material Development

  • Thin-film composite and copolymer membranes with tunable functionality
  • Polymer synthesis and modification for ion-selective membranes
  • Organic-inorganic hybrid systems for enhanced selectivity and stability

Fabrication & Interface Engineering

  • Initiated chemical vapor deposition (iCVD) for ultrathin polymer films
  • Tailoring nanoporosity and surface chemistry for targeted molecular transport
Professional Experience
2026.03 – Present

Postdoctoral Researcher

Designing selective membrane layers to suppress hydrazine crossover in anion exchange membrane water electrolysis, enabling efficient oxygen evolution.

2025.03 – 2026.02

Postdoctoral Researcher

Dept. of Chemical & Biomolecular Engineering, KAIST · Daejeon, Korea

Developed novel polymer membranes for energy-efficient, room-temperature separation of challenging complex mixtures. Advisor: Prof. Dong-Yeun Koh, Membranes, Materials, Machine Intelligence Laboratory (MMML).

Publications

† Co-first author

MANUSCRIPTS UNDER REVIEW

PEER-REVIEWED JOURNAL ARTICLES

Honors & Awards
Excellent Paper Presentation Award · The Membrane Society of Korea Fall Meeting (2024)
Conference Presentations
2025 KIChE Fall Meeting · "Crude Oil Fractionation Enabled by Dynamic Deposition Layer on Mesoporous Membranes" Oral
2024 The Membrane Society of Korea Fall Meeting · "MnO₂ Incorporation into Polybenzimidazole Membranes for Liquid Hydrocarbon Separation" Poster
2024 Gordon Research Seminar & Conference (GRS/GRC) on Membranes: Materials and Processes · "Ultrathin Organosiloxane Membrane for Precision Organic Solvent Nanofiltration" Poster
2023 13th International Congress on Membranes & Membrane Processes (ICOM) · "Precise Molecular Discrimination with Organosiloxane Composite Membrane via Organic Solvent Nanofiltration" Oral
2022 33rd International Symposium on Chemical Engineering (ISChE) · "Precise Molecular Level Separation of Organosiloxane Membrane via Organic Solvent Nanofiltration" Oral
2022 KIChE Fall Meeting · "Precise Molecular Discrimination with Organosiloxane Membranes via Organic Solvent Nanofiltration" Poster
2022 KIChE Spring Meeting · "Organosiloxane Composite Membrane for Organic Solvent Nanofiltration" Oral
Contact
Location Daejeon, South Korea
Affiliation KRICT, Hydrogen Energy Research Center
Google Scholar Profile →