Yeonkyeong Ryu

ORCID: 0000-0003-4670-8365
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About
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Research Areas
  • Synthetic Organic Chemistry Methods
  • Catalysis for Biomass Conversion
  • N-Heterocyclic Carbenes in Organic and Inorganic Chemistry
  • Supercapacitor Materials and Fabrication
  • Carbon dioxide utilization in catalysis
  • Catalysis and Hydrodesulfurization Studies
  • Model-Driven Software Engineering Techniques
  • Chemical Synthesis and Analysis
  • Conducting polymers and applications
  • Lignin and Wood Chemistry
  • Advanced Cellulose Research Studies
  • Catalytic C–H Functionalization Methods
  • CO2 Reduction Techniques and Catalysts
  • Electrocatalysts for Energy Conversion
  • Gas Sensing Nanomaterials and Sensors
  • Enzyme-mediated dye degradation
  • Ionic liquids properties and applications
  • Catalytic Cross-Coupling Reactions
  • Advanced Sensor and Energy Harvesting Materials
  • Fuel Cells and Related Materials
  • Chemical Synthesis and Reactions

Daegu Gyeongbuk Institute of Science and Technology
2023-2025

Korea Research Institute of Chemical Technology
2023-2025

Institute for Basic Science
2019-2020

Ulsan National Institute of Science and Technology
2019-2020

Government of the Republic of Korea
2019

By doping TiO 2 nanoparticles into PVC gel, a high-output TENG was fabricated, enabling temperature-independent pressure sensor. This sensor achieved stable sensitivity of 2.03 V kPa −1 (10–40 kPa) and 0.97 (40–100 from 25 °C to 55 °C.

10.1039/d4ta07867e article EN cc-by-nc Journal of Materials Chemistry A 2025-01-01

The development of Cu-based catalysts for electrochemical CO2 reduction reaction (CO2RR) with stronger CO-binding elements had been unsuccessful in improving multicarbon production from the CO2RR due to CO-poisoning. Here, we discover that trace doping levels Co atoms Cu, termed CoCu single-atom alloy (SAA), achieve up twice formation rate CO as compared bare Cu and further demonstrate a high jC2H4 282 mA cm–2 at −1.01 VRHE neutral electrolyte. From DFT calculations, sites neighboring...

10.1021/acsenergylett.3c00418 article EN ACS Energy Letters 2023-07-14

Switchable catalysts respond to various types of stimuli in a manner that results distinct structural or electronic changes. When each state exhibits different activity, selectivity, solubility, the corresponding catalyst may be used control chemical reactions temporally- spatially-resolved fashion. N-Heterocyclic carbenes (NHCs) are versatile scaffolds for building switchable and many examples changes electrochemical potential light have been introduced. Such NHCs will described this...

10.1039/c9cc00795d article EN Chemical Communications 2019-01-01

A Ru(II) complex supported by an N-heterocyclic carbene annulated to a redox-active naphthoquinone (NQ) was interrogated using range of potentiodynamic and potentiostatic electrochemical techniques. The exhibited two redox processes, one which attributed the Ru(II)|Ru(III) couple (E1/2 = +1.10 V vs saturated calomel electrode) other NQ|NQ– −0.62 V). Using coulometry or bulk electrolysis, application fixed negative potential (−0.95 V) electrodes placed in dichloromethane solution containing...

10.1021/acs.organomet.0c00052 article EN publisher-specific-oa Organometallics 2020-04-22

We show that redox-switchable catalysis may be used to control acyclic diene metathesis (ADMET) polymerizations and related cross (CM) reactions.

10.1039/c9qm00391f article EN Materials Chemistry Frontiers 2019-01-01

Abstract The aerobic oxidation of 5‐hydroxymethylfurfural (HMF) into 2,5‐furandicarboxylic acid (FDCA), a bio‐based plastic monomer, is an important process for the valorization biomass. Here, manganese oxides various states with identical morphologies and similar surface areas were synthesized by introducing oxygen vacancy sites, they investigated as heterogeneous catalysts HMF oxidation. Mn 2 O 3 exhibited remarkable catalytic efficiency due to synergistic effect state metal moieties,...

10.1002/bkcs.12925 article EN Bulletin of the Korean Chemical Society 2024-12-12

Abstract Herein, we present a facile synthetic process for producing biomass‐derived isosorbide (ISB) dioxides using dimethyl dioxirane (DMDO) as an efficient oxidizing agent, which was generated in situ from acetone and KHSO 5 . To achieve high conversion product yield, the concentration, flow rate, reaction temperature were optimized. Under optimal conditions, rapid epoxidation situ‐ DMDO observed under ultrasonication, yielding desired within 35 min at 0 °C. This study offers convenient...

10.1002/asia.202300744 article EN cc-by-nc-nd Chemistry - An Asian Journal 2023-10-04
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