A5101650362- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Magnetism in coordination complexes
- Metal complexes synthesis and properties
- Lanthanide and Transition Metal Complexes
- Quantum Dots Synthesis And Properties
- Crystallography and molecular interactions
- Chalcogenide Semiconductor Thin Films
- Electrocatalysts for Energy Conversion
- Advanced battery technologies research
- Metal-Catalyzed Oxygenation Mechanisms
- Metal-Organic Frameworks: Synthesis and Applications
- Electronic and Structural Properties of Oxides
- Magnetic and transport properties of perovskites and related materials
- Copper-based nanomaterials and applications
- Advanced Condensed Matter Physics
- Boron Compounds in Chemistry
- Physics of Superconductivity and Magnetism
- Multiferroics and related materials
- Advanced Photocatalysis Techniques
- Porphyrin and Phthalocyanine Chemistry
- Fuel Cells and Related Materials
- Electrochemical Analysis and Applications
- Synthesis and Characterization of Heterocyclic Compounds
- Radiopharmaceutical Chemistry and Applications
Gongju National University of Education
2017-2025
Kongju National University
2014-2025
Seoul National University
2018-2022
Institute for Basic Science
2017-2022
Cornell University
2022
Interface (United States)
2022
University of St Andrews
2022
Pohang University of Science and Technology
2022
Government of the Republic of Korea
2015-2021
Korea Hydrographic and Oceanographic Agency
2019
The visible green and red upconversion emissions in Er3+/Yb3+ doped β-NaGdF4 nanoparticles were enhanced by tridoping with Fe3+ ions (0–40 mol%). XRD, XPS, ICP-AES EDS data demonstrated successful incorporation of NaGdF4:Yb3+/Er3+ nanoparticles. effect on the luminescence NPs was investigated detail. emission intensities 34 30 times, respectively. maximum observed a sample containing mol% ions. A possible mechanism for is proposed. In addition, layer silica coated onto surface UCNPs to...
A simple and efficient coating method of silver nanowires with uniform shells TiO2 has been established using 2-mercaptoethanol monolayers. The thickness the titania layer can be controlled by changing concentration precursor solution. In situ TEM thermal annealing studies showed that nanowire core remains intact until temperatures 750 °C, which is significantly higher than melting temperature bare nanowires. After this temperature, Ag were melted subsequently vaporized, leaving nanotubes....
A simple solvothermal approach for the phase controlled synthesis of SnSe and SnSe<sub>2</sub> hierarchical nanostructures (HNs) has been reported.
This review focuses on the various synthetic approaches to upconversion nanocrystals and recent developments in photovoltaic applications of nanomaterials.
A novel rear reflector structure that combines NIR light harvesting β-NaGdF4:Yb, Er, Fe upconversion nanoparticles (UCNPs) and reflecting silver particles has been successfully used to improve the performance of dye-sensitized solar cells (DSSCs). The power conversion efficiency DSSCs with a was 7.04%, which is an increase 21.3% compared cell without (5.8%).
Urchin like Ni<sub>x</sub>Co<sub>3−x</sub>O<sub>4</sub>hierarchical nanostructures were demonstrated as promising electrocatalysts for oxygen reduction and methanol oxidation reactions in alkaline fuel cells.
ADVERTISEMENT RETURN TO ISSUEPREVNoteNEXTWeak Ferromagnetism in a Three-Dimensional Manganese(II) Azido Complex, [Mn(4,4'-bipy)(N3)2]n (bipy = Bipyridine)Sujin Han, Jamie L. Manson, Jinkwon Kim, and Joel S. MillerView Author Information Department of Chemistry, Kongju National University, 182 Shinkwan, Chungnam 314-701, Korea, University Utah, 315 South 1400 East RM 2124, Salt Lake City, Utah 84112-0850 Cite this: Inorg. Chem. 2000, 39, 18, 4182–4185Publication Date (Web):August 15,...
Abstract Highly efficient, nonprecious and stable electrocatalysts for the hydrogen evolution reaction (HER) are absolutely crucial renewable energy conversion, yet design of such catalysts remains to be a long arduous task. Herein, cobalt phosphide (CoP) nanoparticles (NPs) embedded in hierarchical N‐doped carbon nanotube frameworks (CoP‐HNCs) have been synthesized by controlled phosphidation NPs (Co‐HNCs). The Co‐HNCs were prepared direct carbonization Co‐based zeolitic imidazolate...
The development of hydrogen evolution catalysts based on nonprecious metals is essential for the practical application water-splitting devices. Herein, synthesis Co9 S8 -MoS2 hierarchical nanoboxes (HNBs) as efficient reaction (HER) reported. surface hollow cubic structure was organized by CoMoS4 nanosheets formed through MoS42- and Co2+ released from cobalt zeolite imidazole framework (ZIF-67) templates under reflux in a mixture water/ethanol. formation process HNB structures characterized...
Abstract Nonequilibrium atomic structures can host exotic and technologically relevant properties in otherwise conventional materials. Oxygen octahedral rotation forms a fundamental distortion perovskite oxides, but only few patterns are predominantly present at equilibrium. This has restricted the range of possible functions necessitating utilization nonequilibrium rotation. Here, we report that designed metastable pattern leads to robust room-temperature ferroelectricity CaTiO 3 , which is...
A MOF-on-MOF process affords novel hollow nanocrystals composed of CoP<sub>2</sub> yolk and Fe<sub>x</sub>Co<sub>1−x</sub>P<sub>2</sub> exhibiting excellent electrocatalytic performance for the oxygen evolution reaction.
Different phases of nickel selenides are synthesized from a single coordination polymer precursor by tuning the electronic structure for bifunctional electrocatalytic OER and ORR in alkaline media.
Heterobimetallic hexanuclear cyano-bridged complexes, [{Fe(Tp)(CN)3}4{M(MeCN)(H2O)2}(2)].10H2O.2MeCN [M = Ni (1), Co (2), Mn (3); Tp hydrotris(1-pyrazolyl)borate], have been synthesized in H2O-MeCN solution. Complexes 1-3 are isostructural and with [{Fe(Tp)(CN)3}4{M(MeCN)(H2O)2}2] units linked by hydrogen bonds to form a 2D-structure the solid state. Complex 1 is canted antiferromagnet that undergoes field-induced spin-flop-like transition at approximately T 2 K. At 4.45 K has paramagnetic...
TiO2, SnO2, ZnO, Fe2O3, and ZrO2 nanotubes were synthesized through a combination of templating solvothermal processes. Selenium nanowires have been used as template for the first time to synthesis family functional metal oxide nanotubes. The so obtained composed fine particles with sizes small 6–8 nm. These characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), transmission (TEM) Raman spectra. influence TiO2 on performance dye-sensitized solar cells (DSSCs) based...
The metal-insulator transition (MIT) in transition-metal-oxide is fertile ground for exploring intriguing physics and potential device applications. Here, an atomic-scale MIT triggered by surface termination conversion SrRuO3 ultrathin films reported. Uniform effective engineering at the (001) can be realized via a self-limiting water-leaching process. As converts from SrO to RuO2 , highly insulating nonferromagnetic phase emerges within topmost monolayer. Such spatially confined...
A series of organometallic arene platinum group metal complexes the type [(η6-arene)Ru(L)Cl]PF6 {arene = benzene; p-cymene and hexamethylbenzene, L N, N′ ligands} [(η5-Cp*)M(L)Cl]PF6 (where M Rh(III) Ir(III), ligands) were synthesized. All isolated as hexafluoridophosphate salts characterised by elemental analysis, infrared NMR spectroscopy. The molecular structures three representative 1, 4 9 determined single crystal X-ray crystallography. They have a "piano stool" geometry with η5 η6...
Rational design and construction of hollow structured hybrid electrocatalysts are impressive for efficient sustainable water splitting process. This study emphasizes a MOF-based self-templating approach to synthesize NiSe2–FeSe double-shelled polyhedrons (DHPs) oxygen evolution reaction (OER) in alkaline solutions. Starting from MIL-88A, this demonstrates followed by etching, coprecipitation, selenization treatments construct DHPs. Due the structure compositional merits, resulting DHPs...