A5032719831- Quantum Dots Synthesis And Properties
- TiO2 Photocatalysis and Solar Cells
- Advanced Photocatalysis Techniques
- Conducting polymers and applications
- Chalcogenide Semiconductor Thin Films
- Education, Safety, and Science Studies
- Transition Metal Oxide Nanomaterials
- Diverse Approaches in Healthcare and Education Studies
- Supercapacitor Materials and Fabrication
- Advanced Polymer Synthesis and Characterization
- Educational Systems and Policies
- Advanced Nanomaterials in Catalysis
- Metal-Organic Frameworks: Synthesis and Applications
- Molecular Junctions and Nanostructures
- Copper-based nanomaterials and applications
- Carbon Nanotubes in Composites
- Epoxy Resin Curing Processes
- Perovskite Materials and Applications
- Organic Electronics and Photovoltaics
- Polymer composites and self-healing
- Synthesis and properties of polymers
- Nanowire Synthesis and Applications
- Flame retardant materials and properties
- Additive Manufacturing Materials and Processes
- Analytical Chemistry and Sensors
Inha University
2022-2025
Hanyang University
2010-2024
Korea Research Institute of Chemical Technology
2002-2024
Anyang University
2020-2024
Korea University
2009-2023
Korea Testing Laboratory
2022-2023
Daeduk University
2013-2021
Government of the Republic of Korea
2015-2020
University of Auckland
2017
Gyeongnam National University of Science and Technology
2016
Abstract The fabrication of surface‐enhanced Raman spectroscopy (SERS) substrates that are optimized for use with specific laser wavelength–analyte combinations is addressed. In order to achieve large signal enhancement, temporal stability, and reproducibility over substrate areas at low cost, only self‐assembly templating processes employed. resulting consist arrays gold nanospheres controlled diameter spacing, properties dictate the optical response structure. Tunability extended surface...
A 50% enhancement in the conversion efficiency (4.9−7.37%) is realized dye-sensitized solar cells using hydrothermally synthesized TiO2−multiwalled carbon nanotube (MWCNT) nanocomposites as compared to TiO2 without MWCNT and Degussa P25. Several characterizations have been employed reveal nature of modification imparted MWCNTs under hydrothermal processing conditions resulting TiO2−MWCNT conjugation through −COOH groups. Efficient charge transfer nanocomposite efficient electron transport by...
In the present study, a thin layer of Cu-based metal–organic frameworks (MOFs, copper(II) benzene-1,3,5-tricarboxylate) is fabricated using layer-by-layer technique, and investigated as light-absorbing in TiO2-based solar cells. Iodine doping MOFs performed to improve conductivity charge-transfer reaction across TiO2/MOF/electrolyte interface. The HOMO LUMO energy states MOF films are estimated be −5.37 −3.82 eV (vs vacuum), respectively, which show well-matched cascade with TiO2. For first...
We report exceptional electrochemical specific capacitance (640 F g−1) for polythiophene (PTh) infiltrated into TiO2 nanotubes (TNTs) by a controlled electropolymerization route. The resulting PTh–TNTs also exhibit excellent behavior with long-term stability. This reproducible and superior performance of PTh–TNT electrodes makes them attractive candidates energy storage.
Ionic metal-organic frameworks (MOFs) offer a new platform to design and construct complete heterogeneous bifunctional catalytic systems for the chemical fixation of CO2 with epoxides. Herein, we developed series pyridinium ionic MOF catalysts (66Pym-RXs 67BPym-MeI) by postsynthetic N-alkylation noncoordinated pyridine sites in porous MOFs. The synergetic effect acidic nucleophilic anions significantly enhanced activity toward cycloaddition epoxides produce cyclic carbonates under...
A facile formation of 1D polythiophene nanofibers is proposed by an electropolymerization reaction into the hollow matrix TiO<sub>2</sub> nanotube arrays.
Deuterium has been recognized as an irreplaceable element in industrial and scientific research. However, hydrogen isotope separation still remains a huge challenge due to the identical physicochemical properties of isotopes. In this paper, partially fluorinated metal-organic framework (MOF) with copper, so-called FMOFCu, was investigated determine efficiency capacity for deuterium extraction from mixture. The unique structure porous material consists trimodal pore system large tubular...
Current technological advances in the organic light-emitting diode panel design of foldable smartphones demand advanced adhesives with UV-blocking abilities, beyond their conventional roles bonding objects and relieving deformation stress. However, optically clear (OCAs) ability cannot be prepared using UV-curing methods relying on a photoinitiator. Herein, new acrylic resin that can efficiently cured visible light without oxygen removal is presented, which may used to develop OCAs for use...
Synthesis of TiO2 nanowires directly on conductive and transparent glass substrates would be very useful for various applications such as photovoltaics photocatalysis. Here, we report the first time that single-crystalline can synthesized fluorine-doped tin oxide (SnO2:F)-coated soda-lime by chemical vapor deposition (CVD) at a temperature is below softening (<530 °C). Moreover, demonstrate CdS nanorods with high crystallinity grown top nanowire surface via transport (CVT) 500 °C. Resulting...
In the present work, TiO2 nanoparticle and multi-walled carbon nanotubes composite powder is prepared hydrothermally. After doctor blading paste from powder, resulted film sensitized with Cu-based metal-organic frameworks using a layer-by-layer deposition technique characterized FE-SEM, EDX, XRD, UV/Visible spectrophotometry photoluminescence spectroscopy. The influence of in photovoltaic performance studied by constructing Grätzel cell I3−/I− redox couple containing electrolyte. results...
Hole doping leads to an efficient photo-induced interfacial charge transfer from MOFs TiO<sub>2</sub> and thereby the can harvest solar radiation generate electricity.
This paper reports the modification of CdS∕TiO2 quantum-dot sensitized solar cells by using single-walled carbon nanotubes (SWCNTs) on indium-doped tin oxide (ITO) electrodes. The presence SWCNT layers an ITO electrode increased short-circuit current under irradiation condition and also reduced charge recombination process dark condition. power conversion efficiency 50.0% in SWCNTs due to improved charge-collecting recombination.
In the present work, thin films of ruthenium based metal–organic frameworks are synthesized using a layer-by-layer (LbL) technique and film is characterized XRD, FE-SEM, UV/visible spectroscopy, cyclic voltammetry photoluminance spectroscopy. Further, feasibility MOF as sensitizer in solar cell investigated. The HOMO–LUMO level estimated found to be suitable allow use for TiO2. When TiO2 mesoporous sensitized with LBL Grätzel type liquid junction constructed, it demonstrates performance Isc...
Welding quality is a critical criterion for evaluating welding operations. Traditional evaluation methods suffer from drawbacks such as lack of objectivity, untimeliness, and high costs. Therefore, real-time monitoring assessment the weld pool have become mainstream trend in technology. This study introduces novel method defining width boundaries. It utilizes an infrared (IR) camera to capture temperature clusters employs Sobel operator convolution generate gradient map clusters. Through...
The ZnO nanoflowers loaded with gold (Au) nanoparticles (NPs) are synthesized by a hydrothermal route using mixed precursors and controlled conditions. dye-sensitized solar cells based on the Au NPs show power conversion efficiency of 2.5%, which is considerably higher than that without NPs. Detailed characterizations performed, presented, discussed.
This paper reports the formation of a thin ZnO energy barrier between CdSe quantum dot (Q dots) sensitizer and TiO2 nanotubes (TONTs) for improved current efficiency Q dot-sensitized solar cells. The TONTs increased short-circuit under illumination also reduced dark in environment. power conversion TONT cells by 25.9% presence layer due to charge-collecting recombination.