A5005554561- Nuclear Physics and Applications
- X-ray Spectroscopy and Fluorescence Analysis
- Advanced Photocatalysis Techniques
- TiO2 Photocatalysis and Solar Cells
- Electron and X-Ray Spectroscopy Techniques
- Catalytic Processes in Materials Science
- Radioactive element chemistry and processing
- Aerogels and thermal insulation
- Analytical chemistry methods development
- Graphene research and applications
- Carbon Nanotubes in Composites
- Analytical Chemistry and Chromatography
- Radioactivity and Radon Measurements
- Semiconductor materials and devices
- Radiation Shielding Materials Analysis
- Graphene and Nanomaterials Applications
- Skin Protection and Aging
- Carbon dioxide utilization in catalysis
- Nonlinear Optical Materials Studies
- ZnO doping and properties
- Municipal Solid Waste Management
- Metallic Glasses and Amorphous Alloys
- Membrane Separation and Gas Transport
- Inorganic Chemistry and Materials
- melanin and skin pigmentation
Budapest University of Technology and Economics
2016-2023
Institute for Technical Physics and Materials Science
1985-1989
Hungarian Academy of Sciences
1981-1989
University of Miskolc
1983
Institute for Physics
1973-1981
Central Research Institute
1973-1981
Eötvös Loránd University
1973
Institute of Physics
1971
Carbon nanospheres (CNSs) were prepared by hydrothermal synthesis, and coated with TiO2 ZnO nanofilms atomic layer deposition. Subsequently, through burning out the carbon core templates hollow metal oxide obtained. The substrates, carbon-metal composites characterized TG/DTA-MS, FTIR, Raman, XRD, SEM-EDX, TEM-SAED their photocatalytic activity was also investigated. results indicate that CNSs are not beneficial for photocatalysis, but crystalline have considerable activity.
Carbon nanospheres were used as templates for the first time to prepare titania inverse opal photonic crystal. From spheres, colloid crystals made by vertical deposition on microscope slides, and TiO2 was grown them using atomic layer (ALD). For this technique, relatively high thermal stability presence of oxygen containing functional groups surface carbon spheres are beneficial. Subsequent annealing burned out template leaving behind structures. The upper solid removed with argon ion...
[NH4Cu(OH)MoO4] as active photocatalyst in the decomposition of Congo Red when irradiated by UV or visible light has been prepared an unusual ammonia/water ligand exchange reaction [tetraamminecopper(II)] molybdate, [Cu(NH3)4]MoO4. [Cu(NH3)4]MoO4 was subjected to moisture open air at room temperature. Light blue orthorhombic [Cu(NH3)(H2O)3]MoO4 formed 2 days a result unexpected solid/gas phase ammonia–water reaction. This complex does not lose its last ammonia on further standing air;...
TiO2 and ZnO single multilayers were deposited on hydroxyl functionalized multi-walled carbon nanotubes using atomic layer deposition. The bare the resulting heterostructures characterized by TG/DTA, Raman, XRD, SEM-EDX, XPS, TEM-EELS-SAED low temperature nitrogen adsorption techniques, their photocatalytic gas sensing activities also studied. (CNTs) uniformly covered with anatase wurtzite layers combinations. In degradation of methyl orange, most beneficial structures are those where is...
A nitrogen doped carbon aerogel was used as a substrate for the atomic layer deposition of TiO<sub>2</sub> and ZnO layers in various thicknesses.
Possible utilization of SRF (solid recovered fuel) in the energy industry is a widely investigated topic, because even though it economically feasible, its complex reactions make steady operation hard to maintain. prepared as mixture well-combustible (but not recyclable) parts municipal and industrial waste, which consists mainly various papers, plastics textiles with very different combustion characteristics. To describe kinetics sample like this, more advanced methods recommended. In this...
When graphene oxide is reduced, the functional groups are released and structure becomes more ordered. The degree of reduction might be tunable with process parameters. In our work, prepared effect thermal chemical investigated. samples characterized TG/DTA-MS, SEM-EDX, TEM, XPS, ATR-FTIR, Raman spectroscopy XRD. Their electrical resistance, cyclic voltammetry photocatalytic activity data conductivity can varied by several orders magnitude, offering a tool to match its properties certain...
Core-shell carbon-TiO2 composite and hollow TiO2 nanospheres were prepared using carbon as hard-templates, coating them with atomic layer deposition, subsequent burning out of the cores. The bare carbon, characterized TG/DTA-MS, FTIR, XRD SEM-EDX.
Vertically aligned carbon nanotubes (VACNTs or "CNT forest") were decorated with semiconductor particles (TiO₂ and ZnO) by atomic layer deposition (ALD). Both the structure morphology of components systematically studied using scanning (SEM) high resolution transmission electron microscopy (HRTEM), energy-dispersive X-ray spectroscopy (EDX), Raman spectroscopy, diffraction (XRD) methods. Characterization results revealed that decoration was successful in whole bulk VACNTs. The effect a...
Abstract In the literature data, several papers reported synthesis by various chemical or physical methods of SrCu 2 O (SCO) having possible applications in thermoelectric completely electronic devices such as solar cells, liquid crystal displays and touch screen. A great challenge is represented formation pure (SCO), due to high labiality Cu valence, depending on temperature. present paper, thermal behavior Sr–Cu–O gels obtained sol–gel (SG) microwave (MW)-assisted SG was studied order...
The boron concentration of Fe40Ni40P14B6, Fe32Ni36Cr14P12B6 and Fe40Ni40B20 metallic glasses is measured by neutron activation analysis on both surfaces the ribbon samples. It found that always higher bright side than dull which in contact with cold surface wheel during rapid quenching from melt. A possible explanation given terms solid–liquid interface moving rapidly cooled to free when preparing [Russian text ignored].
The aim of the study was to analyze reversibility cycle graphene oxide (GO), reduced GO, and GO obtained by consecutive reoxidation GO. Accordingly, heated in three different atmospheres (oxidizing, inert, reducing, i.e., air, nitrogen, argon/hydrogen mixture, respectively) at 400 °C obtain with varying composition. bare RGO samples were oxidized or reoxidized HNO3. thermal properties, composition, bonds, structure investigated TG/DTA, EDX, Raman spectroscopy, XRD. Their photocatalytic...