Ezra S. Koh

ORCID: 0000-0003-1676-8623
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About
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Research Areas
  • Electrocatalysts for Energy Conversion
  • CO2 Reduction Techniques and Catalysts
  • Catalytic Processes in Materials Science
  • Ammonia Synthesis and Nitrogen Reduction
  • Fuel Cells and Related Materials
  • Electrochemical Analysis and Applications
  • Enzyme Catalysis and Immobilization
  • biodegradable polymer synthesis and properties
  • Advanced battery technologies research
  • Carbon dioxide utilization in catalysis
  • Vascular Procedures and Complications
  • Advanced Photocatalysis Techniques
  • Peripheral Artery Disease Management
  • Catalysts for Methane Reforming
  • Machine Learning in Materials Science
  • Advanced Thermoelectric Materials and Devices
  • Anodic Oxide Films and Nanostructures
  • Infectious Aortic and Vascular Conditions
  • Catalysis for Biomass Conversion

Technical University of Darmstadt
2019-2023

Technical University of Munich
2023

Methodist Hospital
2022

Abstract Iridium oxide is the state‐of‐the‐art catalyst for electrochemical water oxidation in an acidic medium. Despite being one of rarest elements Earth's crust, there a pressing need to maximize utilization and longevity active iridium centers. While conventional low‐temperature synthesis can yield nanostructures with high mass‐specific activity, they are often insufficiently stable during oxidation. Structurally ordered most electrocatalysts utilized polymer electrolyte membrane...

10.1002/aenm.202301450 article EN cc-by-nc Advanced Energy Materials 2023-06-13

Abstract The copper‐catalyzed electrochemical CO 2 reduction reaction represents an elegant pathway to reduce emissions while producing a wide range of valuable hydrocarbons. selectivity for these products depends strongly on the structure and morphology copper catalyst. However, continued deactivation during catalysis alters obtained product spectrum. In this work, we report stabilizing effect three different carbon supports with unique pore structures. influence stability was examined by...

10.1002/celc.202200924 article EN cc-by ChemElectroChem 2023-01-03

Abstract The utilization of nanoscale catalysts represents a valuable and promising strategy for augmenting catalytic performance while mitigating the reliance on expensive noble metals. Nevertheless, significant knowledge gap persists regarding intricate interplay between catalyst size, physical properties, behavior in context oxygen reduction reaction. In this study, synthesis precisely controlled palladium is presented, spanning wide range from individual atoms to metal clusters...

10.1002/admi.202300647 article EN cc-by Advanced Materials Interfaces 2023-09-29

Abstract The utilization of biomass is one the major challenges for transition from fossil to renewable resources. Often, separation desired product reaction mixture most energy‐intensive step. Liquid‐phase adsorption a promising technology that could significantly improve downstream processing in biorefineries. Highly hydrophobic adsorbents were applied lactic acid (LA) aqueous solutions and avoid formation gypsum as byproduct. High uptakes selectivity obtained single‐solute co‐adsorption...

10.1002/cssc.201900847 article EN ChemSusChem 2019-05-09

The Fischer-Tropsch-to-Olefins process allows to convert waste stemming CO2 with green hydrogen olefins. Iron can catalyse both core reactions: 1) reverse-water-gas-shift as well 2) Fischer-Tropsch. Carbon supported catalysts were reported be highly attractive in this context, but until now mainly non technically applicable research carbons like nanotubes or ordered mesoporous studied and long term stability studies are missing. Here, beaded carbon blacks, available inexpensive support...

10.1016/j.catcom.2023.106622 article EN cc-by Catalysis Communications 2023-02-01

Polymer electrolyte membrane (PEM) electrolysis is considered to play a vital role in the sustainable energy transition. The efficient generation of hydrogen largely influenced by slow rate anodic oxygen evolution reaction (OER). Iridium oxide represents one most promising catalysts for electrochemical oxidation water an acidic environment. Under harsh operating conditions at anode, iridium found be among dissolution-resistant while offering acceptable OER activity. However, iridium’s...

10.1149/ma2023-01362023mtgabs article EN Meeting abstracts/Meeting abstracts (Electrochemical Society. CD-ROM) 2023-08-28

The electrochemical CO 2 reduction reaction (CO RR) provides the combined benefit of reducing anthropogenic emissions while supplying a wide variety valuable chemical feedstock chemicals. [1] While many transition metals are RR active catalysts, only copper can form products requiring more than two electrons in conversion . This includes multitude high-value-added such as ethylene, ethanol, or propanol. [1-3] selectivity is strongly influenced by structure and morphology catalysts....

10.1149/ma2023-01261743mtgabs article EN Meeting abstracts/Meeting abstracts (Electrochemical Society. CD-ROM) 2023-08-28

The electrochemical oxygen reduction reaction (ORR) involving the transfer of two electrons (2-electron ORR) offers a sustainable alternative for production hydrogen peroxide (H 2 O ) on-site. Minimizing use expensive noble metal catalysts and maximizing their atomic utilization can be achieved by reducing size catalysts. While previous studies have primarily focused on relationship between particle activity in 4-electron ORR using Pt-based catalysts, less attention has been paid to...

10.1149/ma2023-01382247mtgabs article EN Meeting abstracts/Meeting abstracts (Electrochemical Society. CD-ROM) 2023-08-28
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