A5026182027- Metal and Thin Film Mechanics
- Catalytic Processes in Materials Science
- Semiconductor materials and devices
- Diamond and Carbon-based Materials Research
- Copper Interconnects and Reliability
- Magnetic properties of thin films
- Catalysis and Oxidation Reactions
- nanoparticles nucleation surface interactions
- Thin-Film Transistor Technologies
- Surface and Thin Film Phenomena
- Electrocatalysts for Energy Conversion
- Catalysts for Methane Reforming
- Chalcogenide Semiconductor Thin Films
- Ion-surface interactions and analysis
- ZnO doping and properties
- Electron and X-Ray Spectroscopy Techniques
- Quantum Dots Synthesis And Properties
- Fuel Cells and Related Materials
- Gold and Silver Nanoparticles Synthesis and Applications
- Semiconductor materials and interfaces
- Advanced Materials Characterization Techniques
- Nanomaterials for catalytic reactions
- TiO2 Photocatalysis and Solar Cells
- Copper-based nanomaterials and applications
- Microstructure and mechanical properties
Institute for Technical Physics and Materials Science
2016-2025
HUN-REN Centre for Energy Research
2016-2025
Eötvös Loránd University
2022-2024
Hungarian Academy of Sciences
2009-2022
Hungarian Research Network
2020-2022
HUN-REN Research Centre for Natural Sciences
2012-2019
Budapest Institute
2017
TARH (Portugal)
2009
University of Lisbon
2009
University of Tennessee at Knoxville
2009
Alternative methods, including green synthetic approaches for the preparation of various types nanoparticles are important to maintain sustainable development. Extracellular or intracellular extracts fungi perfect candidates synthesis metal due scalability and cost efficiency fungal growth even on industrial scale. There several methods techniques that use fungi-originated fractions gold nanoparticles. However, there is less knowledge about drawbacks limitations these techniques....
HIPIMS (High Power Impulse Magnetron Sputtering) discharge is a new PVD technology for the deposition of high-quality thin films. The flux contains high degree metal ionization and nitrogen dissociation. microstructure HIPIMS-deposited nitride films denser compared to conventional sputter technologies. However, mechanisms acting on microstructure, texture properties have not been discussed in detail so far. In this study, growth TiN by Ti mixed Ar N2 atmosphere has investigated. Varying...
Abstract In this series of articles, a method is presented that performs (semi)quantitative phase analysis for nanocrystalline transmission electron microscope samples from selected area diffraction (SAED) patterns. Volume fractions and degree fiber texture are determined the components. The effect amorphous component minimized by empirical background interpolation. First, two-dimensional SAED pattern converted into one-dimensional distribution similar to X-ray diffraction. components...
Herein, the promotion effect of only 0.3 wt% indium on 3% Ni/Al2O3 and Ni/CeO2-Al2O3 catalysts prepared by deposition-precipitation over a commercial alumina CeO2-modified support was studied. Catalyst characterization XRD, TPR, XPS, TEM, CO-DRIFTS performed. The catalytic properties were investigated coke formation analyzed under temperature ramped CH4-decomposition in Dry Reforming Methane (DRM). unique impact compared to well-known effects ceria additive. carbon deposition blocking...
Experimental data show that the conventional Hall-Petch relationship cannot be maintained in its original form for metals having submicrometer structures. We now propose a dislocation model which modifies Hall-Patch to provide uniform description of grain size strengthening submicron-structured face-centered cubic (f.c.c.) and solid solution alloys.
As a perspective catalyst composition for methane non-oxidative decomposition/methane pyrolysis (CH4⇌C+2H2) yielding clean hydrogen and only solid carbon, the combination of nickel molybdenum on MgO support was investigated. With deliberately low Ni content strong metal-support interaction, 7%Ni4%Mo/MgO 7%Ni12%Mo/MgO catalysts monometallic references were prepared. Structural analysis performed using TPR, XRD, TEM, XPS Raman spectroscopy in reduced state after decomposition test. Catalytic...
In this study, the surface and textural properties as well catalytic performance of Ni/CeO2 NiIn/CeO2 catalysts prepared by wet impregnation (WI) deposition–precipitation (DP) are investigated. The addition Ni (3.0 wt.%) resulted in a decrease specific area pore volume case WI method, possibly due to blockage mesopores. A minimal (0.25 caused further both cases. XRD analysis showed that deposited on CeO2 DP some lattice incorporation, affecting crystallinity support. H2-TPR profiles altered...
This study reveals the connection between silver-doping method, resulting nature and amount of silver dopant together with structural properties long-term antibacterial activity composite coatings.
Balanced, strong interaction of Ni–Na<sub>2</sub>O–ZrO<sub>2</sub>catalyst components under CO<sub>2</sub>reforming methane is a criterion good catalytic activity and stability.
During the experimental formation of sol-gel coatings, colloid dispersions go through a drying process, and structure coatings is formed as result complex chemical, colloidal, capillary interactions. While computer simulations provide guidelines to tune even design nanomaterials synthesis, coating are hitherto unknown in literature. Based on real experiments, we establish here ReaxFF reactive force field-based molecular dynamics simulation protocol order investigate determine role conditions...
Sn-doped TiO2-carbon composites were identified as promising multifunctional supports for Pt electrocatalysts, in which the oxide component enhances resistance against corrosion and strong metal-support interactions at Pt-oxide boundary ensure high stability nanoparticles. This work is devoted to study of influence preliminary functionalization carbon on properties Pt/Ti0.9Sn0.1O2-C catalysts. The structural, compositional morphological differences between samples prepared using...
Copper benzene-1,3,5-tricarboxylate (HKUST-1) is one of the materials holding greatest potential for clean energy gases among microporous storage materials. Although this material commercially available as a powder with particle size 10–20 μm, easier handling adsorbents are preferentially employed pellets or monoliths. Even under binder free conditions there could be high price to pay compacting: loss in crystallinity and porosity. To determine protection graphene oxide (GO) [email...
Photoelectrochemical water splitting can become efficient by grafting co-catalysts on semiconductors that improve the interfacial oxygen evolution reaction. We applied a simple non-noble metal pre-catalyst, [FeII(PBI)3]2+ (PBI is 2-(2′-pyridyl)benzimidazole ligand) for this purpose nanopyramidal BiVO4 semiconductor was morphologically optimal light harvesting, but its performance suffered from V-poor surface recombination sites. The in situ transformed to α-Fe2O3 nanoparticles V-vacant areas...
Design of composite support materials based on Sn-doped TiO2 and carbon is one the strategies to develop corrosion-resistant CO-tolerant Pt electrocatalysts for polymer electrolyte membrane (PEM) fuel cells. As synthesis methodology may have crucial influence structural functional properties composites, different preparation routes novel are explored compared. Ti(1-x)SnxO2–C (x: 0.1-0.3) composites with mixed oxide/carbon ratios were prepared by two sol-gel-based routes, namely (i)...
Low-temperature growth of indium tin oxide (ITO) nanowires (NWs) was obtained on catalyst-free amorphous glass substrates at 250 °C by Nd:YAG pulsed-laser deposition. These ITO NWs have branching morphology as grown in Ar ambient. As suggested scanning electron microscopy (SEM) and high-resolution transmission (HRTEM), our the tendency to grow vertically outward from substrate surface, with (400) plane parallel longitudinal axis nanowires. are low electrical resistivity (1.6 × 10−4 Ω cm)...