A5100719658- Advanced Photocatalysis Techniques
- TiO2 Photocatalysis and Solar Cells
- Electrocatalysts for Energy Conversion
- Anodic Oxide Films and Nanostructures
- Education, Safety, and Science Studies
- Copper-based nanomaterials and applications
- Transition Metal Oxide Nanomaterials
- Educational Research and Pedagogy
- Gas Sensing Nanomaterials and Sensors
- Genomics and Phylogenetic Studies
- Microbial Community Ecology and Physiology
- Advancements in Battery Materials
- Innovation in Digital Healthcare Systems
- Advanced battery technologies research
- Natural Language Processing Techniques
- Quantum Dots Synthesis And Properties
- Supercapacitor Materials and Fabrication
- ZnO doping and properties
- Conducting polymers and applications
- Internet of Things and Social Network Interactions
- Semiconductor materials and devices
- Advanced Battery Technologies Research
- Advanced Drug Delivery Systems
- Technology and Data Analysis
- Ga2O3 and related materials
Hongik University
2019-2025
Inha University
2008-2024
Korea Institute of Science and Technology
2015-2024
Korea Advanced Institute of Science and Technology
1995-2024
Dong-A University
2024
Korea Institute of Materials Science
2024
Friedrich-Alexander-Universität Erlangen-Nürnberg
2009-2023
Kyung Hee University
1997-2023
Korea Institute of Toxicology
2023
Kyungpook National University
2016-2022
We report a process for the fabrication of an anatase TiO(2) mesosponge (TMS) layer by optimized Ti anodization in hot glycerol electrolyte followed suitable etching process. Such layers can easily be grown to >10 microm thickness and have regular channels structural features 5-20 nm range. The show high photocatalytic activity are mechanically very robust. therefore open new pathways wide field TiO(2)(anatase) applications.
In the present work, we show that fully functional self-organized TiO(2) nanotube layers can be electrochemically grown with an unprecedented growth rate if lactic acid (LA) is used as additive during anodization. The main effect of LA addition it allows performing at significantly higher anodization voltage than in free case, and this without dielectric oxide breakdown ("burning"). As a result, for example, 15 μm tube thick layers, suitable use dye-sensitized solar cells (DSSCs) 45 s 7...
Hematite, α-Fe2O3, is considered as one of the most promising materials for sustainable hydrogen production via photoelectrochemical water splitting with a theoretical solar-to-hydrogen efficiency 17%. However, poor electrical conductivity hematite substantial limitation reducing its in real experimental conditions. Despite computing models suggesting that extremely anisotropic, revealing up to 4 orders magnitude higher electron transport conduction along (110) crystal plane, synthetic...
Electrochemical anodization of low-concentration (0.02–0.2 at% Au) TiAu alloys in a fluoride electrolyte leads to self-organized TiO2 nanotubes that show controllable, regular situ decoration with elemental Au nanoclusters ≈5 nm diameter. The degree self-decoration can be adjusted by the concentration alloy and time. Such particle decorated tubes high activity for photocatalytic H2 production from ethanol solutions. As service our authors readers, this journal provides supporting information...
Introducing oxygen vacancies has emerged as a powerful strategy to enhance the electrocatalytic activity of materials for evolution reaction (OER). This approach enhances active site exposure, improves conductivity,...
A Gram-negative, chemoheterotrophic, facultatively anaerobic coccus, designated IMCC1545 T , was isolated from the digestive tract of a marine clamworm, Periserrula leucophryna inhabiting tidal flat Yellow Sea. Cells strain are non-motile, dividing by binary fission. The predominant fatty acids anteiso-C 15 : 0 and C 18 . respiratory quinone is menaquinone-7 DNA G+C content 52.1 mol%. Phylogenetic analyses based on 16S rRNA gene sequences using three treeing algorithms revealed that formed...
Nb-doped TiO(2) nanotube (with C(Nb) < 1 wt%) layers were successfully fabricated by self-ordered electrochemical anodization of Ti-Nb alloys. When used in dye-sensitized solar cells the efficiency enhanced up to 30% compared non-doped nanotubes. IMVS measurements indicate beneficial effect be due lower recombination losses.
The present work shows a significant enhancement of the photoelectrochemical water-splitting performance anodic TiO2 nanotube layers grown on low concentration (0.01−0.2 at% Ru) Ti−Ru alloys. Under optimized preparation conditions (0.05 Ru, 450 °C annealing) water splitting rate oxide tubes could be 6-fold increased. Moreover, beneficial effect is very stable with illumination time; this in contrast to other typical doping approaches TiO2.
The present work establishes a process for the anodic growth of self-organized TiO(2) nanotubes with single-walled morphology. This yields not only much more defined tube geometry but also provides significant increase in properties and prospect wide range nanotube applications.
A little dopey: Ta-doped titania (TiO2) nanotube (NT) arrays can be grown by electrochemical anodization onto low-Ta-concentration (0.03-0.4 at % Ta) Ti-Ta alloys. Under optimized conditions (0.1 Ta, annealing 650 °C and 7 μm thickness), TiO2 NT show a significantly enhanced activity in photoelectrochemical water splitting under simulated sunlight (see figure).
Gleichförmigkeit perfektioniert: Ein hochorientierter Aunp@TiO2-Photokatalysator wurde durch selbstorganisierende Anodisierung eines Ti-Substrats und anschließende Entnetzung Gold-Dünnfilms erhalten. Das Ergebnis: genau ein Au-Nanopartikel (np) pro TiO2-Nanokavität. Solche Anordnungen sind hocheffiziente Photokatalysatoren für die Wasserstofferzeugung aus Ethanol. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are...
Nanoporous materials: High-aspect-ratio, ordered porous Co3O4 layers were formed by self-organizing anodization of a cobalt substrate and subsequent annealing. The key for successful formation such is to sufficiently suppress competing oxygen evolution during anodization. aligned channel behave as highly efficient water oxidation catalyst (see picture). As service our authors readers, this journal provides supporting information supplied the authors. Such materials are peer reviewed may be...
Differently modified TiO2 nanotubes were used to achieve a drastic change in the selectivity of photocatalytic reaction. For oxidation toluene, depending on electronic properties (anatase, rutile, Ru-doped), strong main reaction product (namely benzoic acid versus benzaldehyde) can be achieved, and certain undesired pathways completely shut down.