Youngkook Kwon
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View article: A Hybrid Recommendation System Based on Similar-Price Content in a Large-Scale E-Commerce Environment
A Hybrid Recommendation System Based on Similar-Price Content in a Large-Scale E-Commerce Environment Open
In large-scale e-commerce, recommendation systems must overcome the shortcomings of conventional models, which often struggle to convert user interest into purchases. This study proposes a revenue-driven recommendation approach that explic…
View article: Integration of biomass valorization and bicarbonate electrolysis for low-voltage production of value-added chemicals
Integration of biomass valorization and bicarbonate electrolysis for low-voltage production of value-added chemicals Open
Bicarbonate electrolysis (BCE) utilizing captured CO2 holds promise for the production of carbon-based chemicals and fuels but exhibits a low energy efficiency due to the high theoretical voltage required to drive the anodic oxygen evoluti…
View article: Foreign cation-promoted active species formation enables efficient electrochemical glycerol valorization
Foreign cation-promoted active species formation enables efficient electrochemical glycerol valorization Open
A foreign cation substitution approach to Ni–Co spinel oxide promotes the active NiOOH species formation, resulting in remarkable electrochemical glycerol oxidation performance.
View article: Scalable Low-Temperature CO<sub>2</sub> Electrolysis: Current Status and Outlook
Scalable Low-Temperature CO<sub>2</sub> Electrolysis: Current Status and Outlook Open
The electrochemical CO2 reduction (eCO2R) in membrane electrode assemblies (MEAs) has brought e-chemical production one step closer to commercialization because of its advantages of minimized ohmic resistance and stackability. However, the…
View article: Direction of oxygen evolution reaction electrocatalyst evaluation for an anion exchange membrane CO<sub>2</sub> electrolyzer
Direction of oxygen evolution reaction electrocatalyst evaluation for an anion exchange membrane CO<sub>2</sub> electrolyzer Open
The reference electrode-integrated MEA-type electrolyzer can be utilized to genuinely assess OER electrocatalyst performance for CO 2 electrolysis.
View article: Immobilizing Low‐Cost Metal Nitrides in Electrochemically Reconstructed Platinum Group Metal (PGM)‐Free Oxy‐(Hydroxides) Surface for Exceptional OER Kinetics in Anion Exchange Membrane Water Electrolysis (Adv. Energy Mater. 6/2023)
Immobilizing Low‐Cost Metal Nitrides in Electrochemically Reconstructed Platinum Group Metal (PGM)‐Free Oxy‐(Hydroxides) Surface for Exceptional OER Kinetics in Anion Exchange Membrane Water Electrolysis (Adv. Energy Mater. 6/2023) Open
Oxygen Evolution Reaction In article number 2203401, Youngkook Kwon, and co-workers demonstrate an energy-efficient, low-cost oxygen-evolving electrode by immobilizing Ni3N particles on an electrochemically reconstructed V-NiFeOOH surface …
View article: Nanozyme Based on Porphyrinic Metal–Organic Framework for Electrocatalytic CO<sub>2</sub> Reduction
Nanozyme Based on Porphyrinic Metal–Organic Framework for Electrocatalytic CO<sub>2</sub> Reduction Open
Nanozyme Based on Porphyrinic Metal-Organic Frameworks A new 2D porphyrin-based metal-organic framework is constructed from a highly nonplanar saddle-distorted porphyrin linker to mimic a natural enzyme system. In article number 2200087, W…
View article: Selectively Enhanced Electrocatalytic Oxygen Evolution within Nanoscopic Channels Fitting a Specific Reaction Intermediate for Seawater Splitting
Selectively Enhanced Electrocatalytic Oxygen Evolution within Nanoscopic Channels Fitting a Specific Reaction Intermediate for Seawater Splitting Open
Abundant availability of seawater grants economic and resource‐rich benefits to water electrolysis technology requiring high‐purity water if undesired reactions such as chlorine evolution reaction (CER) competitive to oxygen evolution reac…
View article: Nanozyme Based on Porphyrinic Metal–Organic Framework for Electrocatalytic CO<sub>2</sub> Reduction
Nanozyme Based on Porphyrinic Metal–Organic Framework for Electrocatalytic CO<sub>2</sub> Reduction Open
Mimicry of natural enzyme systems is an important approach for catalyst design. To create an enzyme‐inspired catalyst, it is essential to mimic both the active center and the second coordination sphere. Metal–organic frameworks (MOFs), an …
View article: Design of less than 1 nm Scale Spaces on SnO<sub>2</sub> Nanoparticles for High‐Performance Electrochemical CO<sub>2</sub> Reduction (Adv. Funct. Mater. 8/2022)
Design of less than 1 nm Scale Spaces on SnO<sub>2</sub> Nanoparticles for High‐Performance Electrochemical CO<sub>2</sub> Reduction (Adv. Funct. Mater. 8/2022) Open
3D Tomography In article number 2107349, Stefan Ringe, Youngkook Kwon, Hyung Mo Jeong, and co-workers suggest a new catalytic carbon dioxide reduction reaction (CO2RR) environment, sub-nano scale spacing within Sn nanoparticles, which is a…
View article: CSD 2033397: Experimental Crystal Structure Determination
CSD 2033397: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
View article: Selective photocatalytic production of CH<sub>4</sub> using Zn-based polyoxometalate as a nonconventional CO<sub>2</sub> reduction catalyst
Selective photocatalytic production of CH<sub>4</sub> using Zn-based polyoxometalate as a nonconventional CO<sub>2</sub> reduction catalyst Open
We report the synthesis of Zn-based polyoxometalate (ZnPOM) and its application in photocatalytic CO2 reduction to CH4.
View article: CO<sub>2</sub> Reduction: Atomic‐Scale Spacing between Copper Facets for the Electrochemical Reduction of Carbon Dioxide (Adv. Energy Mater. 10/2020)
CO<sub>2</sub> Reduction: Atomic‐Scale Spacing between Copper Facets for the Electrochemical Reduction of Carbon Dioxide (Adv. Energy Mater. 10/2020) Open
In article number 1903423, Jeung Ku Kang and co-workers describe Cu nanoparticles with atomic-scale spacings. They enable a current density exceeding that of pristine nanoparticles by 12 fold and a Faradaic efficiency of nearly 80% to C2+ …
View article: Atomic‐Scale Spacing between Copper Facets for the Electrochemical Reduction of Carbon Dioxide
Atomic‐Scale Spacing between Copper Facets for the Electrochemical Reduction of Carbon Dioxide Open
Copper (Cu) offers a means for producing value‐added fuels through the electrochemical reduction of carbon dioxide (CO 2 ), i.e., the CO 2 reduction reaction (CO 2 RR), but designing Cu catalysts with significant Faradaic efficiency to C 2…
View article: Hydrolysis of Electrolyte Cations Enhances the Electrochemical Reduction of CO<sub>2</sub> over Ag and Cu
Hydrolysis of Electrolyte Cations Enhances the Electrochemical Reduction of CO<sub>2</sub> over Ag and Cu Open
Electrolyte cation size is known to influence the electrochemical reduction of CO2 over metals; however, a satisfactory explanation for this phenomenon has not been developed. We report here that these effects can be attributed to a previo…
View article: Strong Impact of Platinum Surface Structure on Primary and Secondary Alcohol Oxidation during Electro-Oxidation of Glycerol
Strong Impact of Platinum Surface Structure on Primary and Secondary Alcohol Oxidation during Electro-Oxidation of Glycerol Open
Herein we describe a combined experimental and computational study of electrochemical glycerol oxidation in acidic media on Pt(111) and Pt(100) electrodes. Our results show that glycerol oxidation is a very structure-sensitive reaction in …
View article: CO<sub>2</sub> Electroreduction with Enhanced Ethylene and Ethanol Selectivity by Nanostructuring Polycrystalline Copper
CO<sub>2</sub> Electroreduction with Enhanced Ethylene and Ethanol Selectivity by Nanostructuring Polycrystalline Copper Open
There are a number of recent reports on the use of oxidation/reduction cycling of Cu surfaces to improve their selectivity for ethylene formation in the aqueous CO 2 reduction reaction. Here, the oxidation/reduction process is examined in …
View article: Palladium–gold catalyst for the electrochemical reduction of CO<sub>2</sub> to C<sub>1</sub>–C<sub>5</sub> hydrocarbons
Palladium–gold catalyst for the electrochemical reduction of CO<sub>2</sub> to C<sub>1</sub>–C<sub>5</sub> hydrocarbons Open
Electrochemical reduction of CO2 on PdAu electrodes yields the production of C1–C5 hydrocarbons.
View article: Effects of temperature and gas–liquid mass transfer on the operation of small electrochemical cells for the quantitative evaluation of CO<sub>2</sub>reduction electrocatalysts
Effects of temperature and gas–liquid mass transfer on the operation of small electrochemical cells for the quantitative evaluation of CO<sub>2</sub>reduction electrocatalysts Open
The effect of bulk electrolyte CO2depletion and temperature on catalyst evaluation were explored when using high electrode surface area to electrolyte volume electrochemical cells for CO2reduction.
View article: Trace Levels of Copper in Carbon Materials Show Significant Electrochemical CO<sub>2</sub> Reduction Activity
Trace Levels of Copper in Carbon Materials Show Significant Electrochemical CO<sub>2</sub> Reduction Activity Open
Carbon materials are frequently used as supports for electrocatalysts because they are conductive and have high surface area. However, recent studies have shown that these materials can contain significant levels of metallic impurities tha…
View article: Differential Electrochemical Mass Spectrometer Cell Design for Online Quantification of Products Produced during Electrochemical Reduction of CO<sub>2</sub>
Differential Electrochemical Mass Spectrometer Cell Design for Online Quantification of Products Produced during Electrochemical Reduction of CO<sub>2</sub> Open
The discovery of electrocatalysts that can efficiently reduce CO2 to fuels with high selectivity is a subject of contemporary interest. Currently, the available analytical methods for characterizing the products of CO2 reduction require te…