A5075534088- Gas Sensing Nanomaterials and Sensors
- Transition Metal Oxide Nanomaterials
- Advanced Photocatalysis Techniques
- TiO2 Photocatalysis and Solar Cells
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Thermal and Kinetic Analysis
- Metal-Organic Frameworks: Synthesis and Applications
- Analytical Chemistry and Sensors
- Polyoxometalates: Synthesis and Applications
- ZnO doping and properties
- Planetary Science and Exploration
- Catalytic Processes in Materials Science
- thermodynamics and calorimetric analyses
- Photonic Crystals and Applications
- Conducting polymers and applications
- Nanofluid Flow and Heat Transfer
- Catalysis and Oxidation Reactions
- Semiconductor materials and devices
- Metal complexes synthesis and properties
- Chemical Thermodynamics and Molecular Structure
- Graphene research and applications
- Quantum Dots Synthesis And Properties
- Aerogels and thermal insulation
- Metal Extraction and Bioleaching
University of Miskolc
2024-2025
Budapest University of Technology and Economics
2015-2024
HUN-REN Centre for Energy Research
2024
Institute of Materials and Environmental Chemistry
2023
HUN-REN Research Centre for Natural Sciences
2008-2023
Eötvös Loránd University
2009-2021
Hungarian Academy of Sciences
2009-2018
WWF Hungary
2018
Government of Hungary
2018
Budapest Institute
2014-2017
This paper discusses the formation of nanosized hexagonal tungsten oxide (h-WO3) during annealing ammonium bronze (HATB), (NH4)0.33−xWO3−y. process was investigated by TG/DTA-MS, XRD, SEM, Raman, XPS, and 1H-MAS NMR analyses. Through adjusting temperature atmosphere HATB, composition (W oxidation state, residual NH4+ NH3 content) h-WO3 could be controlled. The effect on conductivity gas sensitivity studied. New structural information obtained about both HATB h-WO3. It found that situated at...
Abstract Graphene has attracted much attention from the science world because of its mechanical, thermal, and physical properties. nanofluid is well known for easy synthesis, longer suspension stability, higher heat conductivity, lower erosion, corrosion, larger surface area/volume ratio, demand pumping power. This article an audit experimental outcome about preparation stability graphene-based nanofluids. Numerous researches to prepare stabilize nanofluids have been developed, it...
Understanding of the effect morphology and crystal phase on photocatalytic efficiency their precise control are still a great challenge in photocatalysis.
Effects of different reaction parameters in the hydrothermal synthesis molybdenum oxides (MoO3) were investigated and monoclinic (β-) MoO3 was prepared hydrothermally for first time. Various temperatures (90/210 °C, as a novelty 240 °C) durations (3/6 h) used. At cetyltrimethylammonium bromide (CTAB) CrCl3 additives also tested. Both played significant role formation products. 90 h-MoO3 obtained, while at °C orthorhombic (α-) formed with hexagonal rod-like nanofibrous morphology,...
Coupling TiO2 nanofibers with other semiconductor metal oxides can effectively extend the light absorbability of to visible range electromagnetic spectrum. This study demonstrates synthesis TiO2–MoO3 composite via electrospinning using Ti and Mo water-soluble precursors. Aqueous solutions these precursors were added a PVP solution in N–N dimethylformamide. The mixture was electrospun, followed by annealing air at 600 °C obtaining oxide nanofibers. fibers characterized thermogravimetry...
Abstract Core WO 3 nanofibers (140–300 nm in diameter, several hundred µm long) are made by a novel, water‐based electrospinning process using ammonium metatungstate (AMT) and polyvinylpyrrolidone (PVP) as precursors. TiO 2 shells (1.5–20 nm) grown atomic layer deposition (ALD) TiCl 4 water at 250°C. The /TiO composite fibers analyzed X‐ray diffraction (XRD), scanning electron microscopy (SEM)‐energy dispersive (EDX), transmission (TEM), Raman spectroscopy (RS), UV‐Vis spectroscopy,...
Study on h-WO<sub>3</sub>/TiO<sub>2</sub> nanowires as ALD nucleation of TiO<sub>2</sub> was found to be influenced by the WO<sub>3</sub> polymorphs.
Nanofluids obtained from halloysite and de-ionized water (DI) were prepared by using surfactants changing pH for heat-transfer applications. The nanotubes (HNTs) nanofluids studied several volume fractions (0.5, 1.0, 1.5 vol%) temperatures (20, 30, 40, 50, 60 °C). properties of HNTs with a scanning electron microscope (SEM), energy-dispersive X-ray analysis (EDX), Fourier-transform infrared (FT-IR) spectroscopy, powder diffraction (XRD), Raman spectroscopy thermogravimetry/differential...