A5084573899- Advanced Photocatalysis Techniques
- Copper-based nanomaterials and applications
- Gas Sensing Nanomaterials and Sensors
- Electrocatalysts for Energy Conversion
- TiO2 Photocatalysis and Solar Cells
- ZnO doping and properties
- Electronic and Structural Properties of Oxides
- Perovskite Materials and Applications
- Advanced oxidation water treatment
- Advanced battery technologies research
- Quantum Dots Synthesis And Properties
- Solar-Powered Water Purification Methods
- CO2 Reduction Techniques and Catalysts
- Polydiacetylene-based materials and applications
- Polymer Nanocomposites and Properties
- Advanced Sensor and Control Systems
- solar cell performance optimization
- Electrochemical Analysis and Applications
- Fuel Cells and Related Materials
- Vehicle Noise and Vibration Control
- Acoustic Wave Phenomena Research
- Advanced Materials and Mechanics
- Engineering Applied Research
- Transition Metal Oxide Nanomaterials
- Chalcogenide Semiconductor Thin Films
Kyungpook National University
2012-2023
University of Szeged
2020-2022
Government of the Republic of Korea
2017-2018
Texas A&M University at Qatar
2014
Hyundai Motors (South Korea)
2008
Korea Institute of Energy Research
2005
Pusan National University
2004
To improve the photoelectrochemical (PEC) performance of BiVO4, three different modifications (doping, heterojunction, and catalyst deposition) using earth-abundant elements are performed their effects compared in a 0.1 M phosphate electrolyte at pH 7 under AM1.5 light (100 mW/cm2). When hexavalent element (Cr6+, W6+, or Mo6+) is doped various levels, Mo6+-doping effect most significant 10 atomic % with about two times higher photocurrent generation oxygen evolution potential (1.23 VRHE)....
Patterned WO<sub>3</sub> microdisc arrays exhibit excellent photoelectrochemical performances, owing to enhanced light absorption and effective charge separation.
ZnO particles with rod and plate configurations were synthesized using a solvothermal method zinc acetate chloride, respectively. The surface of the as-synthesized rods plates characterized various analysis tools (XRD, XPS, photoluminescence, FE-SEM, HR-TEM, BET, UV–vis) their photocatalytic activities examined for six different redox reactions. areas bandgaps two samples nearly identical; however, XPS photoluminescence (PL) studies showed that have relatively pronounced oxygen vacancy...
The photoelectrochemical properties of template-engineered epitaxial BiVO<sub>4</sub> photoanodes have been enhanced approximately 10 times that bare BiVO<sub>4</sub>.
To enhance the charge separation and kinetics of water oxidation using a BiVO<sub>4</sub> photoanode, BiVO<sub>4</sub>/ZnO nanowire heterostructure decorated with gold (Au) nanoparticles is fabricated as photoanode for photoelectrochemical splitting.
A TiO<sub>2</sub>/NiFeOOH core/shell nanostructured photoanode is fabricated using a facile, one-step electroless deposition method for efficient and durable solar water oxidation.
Nanostructured copper–cobalt oxide (CuxCo3−xO4, CCO) electrodes are grown directly on conducting substrates via electrochemical deposition; then, various factors (e.g., oxygen vacancies, electrochemically active surface area, and electrical conductivity) affecting their electrocatalytic activity for evolution reactions (OERs) studied. The observed OER performance decreases when increasing the annealing temperature due to nanostructure deformation agglomeration decreased number of...
Lead halide perovskites (LHPs) have emerged as perspective materials for light harvesting, due to their tunable band gap and optoelectronic properties. Photocatalytic photoelectrochemical (PEC) studies, employing LHP/liquid junctions, are evolving, where sacrificial reagents often used. In this study, we found that a frequently applied electron scavenger (TCNQ) has dual roles: while it leads rapid transfer from the electrode TCNQ, enhancing PEC performance, also accelerates decomposition of...
Studying the effect of nanoscale morphology on photoelectrochemical performance semiconductor electrodes has been in forefront research for over a decade, there are still major inconsistencies and controversies literature. Here we aimed to resolve some these issues, by controlled preparation TiO2 photoelectrodes from nanoparticles, nanorods, nanosheets, where nano dimension 0D, 1D, 2D structures was kept similar (about 10 nm). XRD, Raman spectroscopy, XPS UPS were employed confirm that...
The importance of developing efficient technologies for converting solar energy into chemical has drawn attention, particularly through water splitting using photocatalytic materials. It highlighted the complexity factors affecting performance photoelectrodes in this process, including bandgap energy, carrier density, morphology, defects, and surface properties. Among them, nanostructuring offers potential improved efficiency due to their large specific area accelerated charge transfer....
Single-walled carbon nanotubes (SWNTs) catalyzed hydrogen production from water containing various electron donors under visible light (<TEX>${\lambda}$</TEX> > 420 nm). As-received SWNTs were effective for production, yet the effect vanished when they underwent surface chemical treatments. Upon coupling with CdSe particles, however, treated far superior to non-treated by a factor of ~30 production.
The blends of polybutylene terephthalate (PBT) with glass-filled thermotropic liquid crystalline polymer (LCP-g) was prepared by a melt mixing technique. rheological, crystalline, thermal, dynamic mechanical, and morphological characteristics these were investigated. viscosity the higher than PBT in whole shear rate range. At low rate, decreased LCP concentration. Higher percent crystallinity observed increasing LCP-g content blend PBT. thermal stability increased relaxation phenomenon as...