A5060819263- Electrocatalysts for Energy Conversion
- Electrochemical sensors and biosensors
- CO2 Reduction Techniques and Catalysts
- Electrochemical Analysis and Applications
- Advanced battery technologies research
- Advanced Thermoelectric Materials and Devices
- Fuel Cells and Related Materials
- Conducting polymers and applications
- Advancements in Battery Materials
- Supercapacitor Materials and Fabrication
- Ionic liquids properties and applications
- Advanced Battery Materials and Technologies
- Dendrimers and Hyperbranched Polymers
- MXene and MAX Phase Materials
- Transition Metal Oxide Nanomaterials
- Analytical Chemistry and Sensors
- Nanoparticle-Based Drug Delivery
- Hydrogen Storage and Materials
- Effects and risks of endocrine disrupting chemicals
- Vehicle emissions and performance
- Block Copolymer Self-Assembly
- Aerosol Filtration and Electrostatic Precipitation
- Thermal Expansion and Ionic Conductivity
- Extraction and Separation Processes
- Adsorption and Cooling Systems
Korea Basic Science Institute
2023-2025
Pohang University of Science and Technology
2019-2023
Korea Post
2020
University of Wollongong
2016-2019
Pusan National University
2013-2019
Dithiooxamide (DTO), an organic ligand, is used to synthesize a ZnDTO framework, which acts as precursor for self-doping of heteroatoms in the presence hemoglobin via carbonization process S and N doped carbon (SNC) Fe-SNC. The sphere shaped porous particles having graphene network exhibit excellent performance energy conversion storage applications. As service our authors readers, this journal provides supporting information supplied by authors. Such materials are peer reviewed may be...
Ambient fine particulate matter (PM) affects both human health and climate. To reduce the PM2.5 (mass of particles below 2.5 μm in diameter) concentration an individual's living environment, ionic liquid-modified polyacrylonitrile (PAN) nanofibers with superior capture capacity were prepared by electrospinning. Ionic liquid diethylammonium dihydrogen phosphate (DEAP) high viscosity hydrophilicity was involved during electrospinning process. Observations scanning electron microscopy (SEM),...
We developed a novel strategy for fabricating poly(3,4-ethylenedioxythiophene) (PEDOT) patterns on various substrates, including hydrogels, via sequential solution procedure without multistep chemical etching or lift-off processes. First, PEDOT nanothin films were prepared glass substrate by phase monomer casting and oxidative polymerization. As second step, after UV-induced poly(ethylene glycol) (PEG) photolithography at the PEDOT/PEG interface through photomask, hydrogel was peeled away...
Abstract Bimetallic nanoparticles (NPs) have aroused interest in various fields because of their synergetic and unique properties. Among those nanoparticles, we strategically approached synthesized Au@Pt NPs via the sonochemical method with different molar ratios (e.g. 3:7, 5:5, 7:3) Au to Pt precursors. The particle structure was confirmed be core-shell, size estimated 60, 52, 47 nm, respectively, for 7:3 Pt. detailed crystallinity as-prepared were further studied by scanning electron...
Abstract A way to synthesize a Mn 2+ ‐ coordinated polymer precursor ligated by sulfur atoms with acetate counter ions (Mn‐DTOGA) is proposed, which achieved an imine formation reaction between dithiooxamide and glutaraldehyde in the presence of manganese (II) acetate. MnS/MnO decorated N, S‐doped carbon nanoparticles (MnS/O‐SNC) are then prepared calcination ion‐coordinated for practical applications catalytic reactions. The Mn‐DTOGA MnS/O‐SNC structures at different temperatures (700, 800,...
A MnS/MnO-decorated S,N-doped carbon electrode was synthesized for advanced LIBs. This shows excellent cycling stability, with the material exhibiting superior performance. In situ XRD and XPS provided a fundamental understanding of material.
Abstract The zeolitic imidazolate frameworks (ZIFs) ZIF-8 and ZIF-67 are well-known as belonging to the series of metal-organic frameworks. Using different types metal ions in them, such Zn2+ Co2+ simultaneously, brings both advantages disadvantages with respect carbonization process. For tailoring their properties, we suggest that best approach involves control bimetallic ZIF-derived carbon nanoarchitecture, which is hybridized through synergistic effects each ion. In this study, ZIFs were...
Vertically aligned MoS 2 nanosheet-anchored Fe,N-doped carbon nanospheres are synthesized and characterized. The material with engineered phase structures revealed trifunctional catalytic activities towards the ORR, HER, H O reduction.
A hurdle to the commercialization of thermoelectrochemical cells (TECs) based on redox reaction hexacyanoferrate (HCF) convert low-grade waste heat into electricity is high manufacturing cost resulting from noble electrode materials like Pt and nanostructured carbon. Herein, we report successful exploitation low-cost Cu, which has not been considered ever for TEC material because its heavy corrosion in operating condition. Interestingly, found that by precisely tuning pH...
Desalination techniques using the photothermal effect hold significant potential for producing fresh water from saline or polluted sources due to their low energy consumption. In case of commercialized carbon materials are related heat loss resulting high thermal conductivity, and metal particles still have trouble in commercialization cost-effectiveness. This is because a desalination evaporator must simultaneously exhibit evaporation performance, excellent conversion efficiency, sufficient...
Dendritic platinum nanoparticles (DPNs) have been synthesized from l-ascorbic acid and an amphiphilic non-ionic surfactant (Brij-58) via a sonochemical method. The particle size shape of the DPNs could be tuned by changing reduction temperature, resulting in uniform DPN with 23 nm or 60 nm. facets studied high-resolution transmission electron microscopy. cytotoxicity has investigated using human embryonic kidney cells (HEK-293), biological adaptability exhibited opened pathway to biomedical...
The functionalized conductive polymer precursor of the terthiophene derivative, 3′-(2-aminopyrimidyl)-2,2′:5′,2″-terthiophene (PATT) was firstly synthesized and confirmed with FT-IR, 1H NMR, 13C mass spectroscopy. electrochemical electronic properties polyPATT film are investigated compared that poly(2,2′:5′,2″-terthiophene-3′-p-benzoic acid) (polyTTBA), which has an electron-accepting group. cyclic voltammograms (CVs) recorded for electrochemically grown reveal redox peaks at +1.1/+0.96 V,...
Converting CO2 to useful chemicals using electrocatalytic processes is a promising technology for reducing the amount of in atmosphere. In previous literature on metal-based catalysts, most attempts have focused optimization CO2-reduction reactions conventional approaches, including nanostructuring and morphology or composite control, which inefficient sluggish reaction kinetics-associated protonation steps. this study, we present an innovative approach electrochemical reduction through...
The unitized regenerative fuel cell (URFC) is a useful electrochemical energy conversion/storage device, in which catalysts for the dual-function (oxygen reduction reaction, ORR, and oxygen evolution OER) electrodes of URFCs must be operative over wide range potentials. Herein, we report highly active stable bifunctional electrocatalyst, three-dimensionally interconnected nanoporous PtIr thin film (np-PtIr) URFC, was prepared by an selective leaching less noble element, Os. np-PtIr showed...
Water electrolysis is known as the most sustainable and clean technology to produce hydrogen gas, however, a serious drawback commercialize this due slow kinetics in oxygen evolution reaction (OER). Thus, we report on nanoporous IrNi thin film that reveals markedly enhanced OER activity, which attained through selective etching of Os from IrNiOs alloy film. Interestingly, electrochemical leads formation 3-dimensionally interconnected structure providing high surface area (ECSA, 80.8 cm2), 90...
Producing practical chemical feedstocks via electrochemical CO2 reduction is a promising technology for carbon recycling and renewable energy storage. To improve performance, electrocatalysts with high activity selectivity must be developed. In this study, Au layers of varying thicknesses were sputtered on polycrystalline Ag catalysts to promote the selective CO. The results show that 2 nm layer exhibited faradaic efficiency 83.9% at −0.9 V versus reversible hydrogen electrode current...