A5088787586- Chalcogenide Semiconductor Thin Films
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Quantum Dots Synthesis And Properties
- Copper-based nanomaterials and applications
- Advanced Thermoelectric Materials and Devices
- Magnetism in coordination complexes
- Environmental remediation with nanomaterials
- Magnetic and transport properties of perovskites and related materials
- Advanced Condensed Matter Physics
- Adsorption and biosorption for pollutant removal
- Organic and Molecular Conductors Research
- Advanced oxidation water treatment
- Electronic and Structural Properties of Oxides
- Electron Spin Resonance Studies
- Nanomaterials for catalytic reactions
- nanoparticles nucleation surface interactions
- CO2 Sequestration and Geologic Interactions
- Engineering Applied Research
- Solid-state spectroscopy and crystallography
- ZnO doping and properties
- Arsenic contamination and mitigation
- Biocrusts and Microbial Ecology
- Therapeutic Uses of Natural Elements
- Clay minerals and soil interactions
Synthon (Czechia)
2020-2024
University of Pavol Jozef Šafárik
2016-2022
Institute of Chemistry of the Slovak Academy of Sciences
2016-2022
University of Pardubice
2020-2021
GEOtest (Czechia)
2019-2020
Synthon (Netherlands)
2020
Blansko Hospital
2020
State Geological Institute of Dionýz Štúr
2020
A completely solid-state mechanochemical synthesis of silver nanoparticles overcoming the problem with water insolubility lichen metabolites hampering their use for classical green in is shown herein. Four species (Xanthoria elegans, Cetraria islandica, Usnea antarctica, and Leptogium puberulum) AgNO3 were used as reducing agents Ag(0) precursor, respectively. The reaction progress was rapid first two cases, whereas case U. antarctica L. puberulum, a significant amount could still be...
Stannite Cu2FeSnS4 and kesterite Cu2ZnSnS4 were synthesized by an eco-friendly ball-milling method in industrial mill. Both sulfides represent perspective materials solar cell technology. Several characterization methods have been applied to determine the course of solid state mechanochemical reactions leading synthesis potential chalcogenide absorbers. The phase surface composition, kinetics, morphology these quaternary elucidated X-ray diffractometry, photoelectron spectroscopy, Soxhlet...
Abstract The present study demonstrates a scalable approach towards the pure Cu 2 ZnSnS 4 (CZTS) phase starting from microsized Cu, Zn, Sn, and S mixture or combination of nanosized CuS, SnS plus Zn S. A set mechanochemical reactions was carried out in an industrial vibratory mill. CZTS obtained after 360 minutes milling with average crystallite size 15 nm for both mixtures. kinetics formation investigated following X‐ray diffractometry (XRD) patterns reaction mixtures milled various times....
Strontium ferromolybdate, Sr 2 FeMoO 6 , is an important member of the family double perovskites with possible technological applications in field spintronics and solid oxide fuel cells. Its preparation via a multi-step ceramic route or various wet chemistry-based routes notoriously difficult. The present work demonstrates that can be mechanosynthesized at ambient temperature air directly from its precursors (SrO, α-Fe, MoO 3 ) form nanostructured powders, without need for solvents and/or...
This article aims to present the results of measurements electromagnetic wave penetration through building element with a specially developed shielding coating.Shielding coating represents dispersed powder in semiconducting liquid.The consists complex oxides La0.7Sr0.3MnO3(LSMO), ZnFe2O4, NiFe2O4 composition and were prepared by self-combustion method using corresponding metal nitrates required molar ratio glycine as fuel.Measurements made for concentration 5 g.Measurements performed...
A pristine colusite Cu26V2Sn6S32 was successfully synthesised on a 100 g scale via mechanochemical reaction in an industrial eccentric vibratory ball mill followed by spark plasma sintering (SPS) at 873 K. The milling of elemental precursors from 1 up to 12 hours performed and the prepared samples were investigated detail X-ray powder diffraction, Mössbauer spectroscopy, scanning electron microscopy, thermoelectric property measurements. results point formation high purity crystallinity...
Nickel mono- (NiSe) and diselenide (NiSe2) were produced from stoichiometric mixtures of powdered Ni Se precursors by the one-step, undemanding mechanochemical reactions. The process was carried out high-energy milling for 30 120 min in a planetary ball mill. kinetics reactions documented, products studied terms their crystal structure, morphology, electrical, optical properties. X-ray powder diffraction confirmed that NiSe has hexagonal NiSe2 cubic structure with an average crystallite size...
Copper, iron, and sulphur in elemental form were applied for mechanochemical synthesis of chalcopyrite CuFeS2.Products characterized by XRD method evaluated Rietveld analysis.A mixture cubic (JCPDS 75-6866) tetragonal 37-0471) phases with almost identical diffractograms identified.Both are nanocrystalline sizes 13 nm 7 laboratory industrial milling, respectively.For determination iron consumption during the synthesis, magnetometry has been applied.Based on magnetization data reflecting time...
The crystal structure of [Ni(bpy)3]2(TCNQ–TCNQ)(TCNQ)2·6H2O (1) was studied by X-ray single-crystal analysis at 145 K and 100 K. structures 1 these two temperatures are essentially the same as previously 200 K: is built up [Ni(bpy)3]2+ complex cations, centrosymmetric crystallographically independent TCNQ·- anion-radicals, disordered σ- π-dimerized (TCNQ)2 units, water molecules crystallization. Lowering temperature from K, via K–100 has shown that lower proportions π-dimerization in unit...
The low temperature physics of structurally amorphous materials is governed by two-level system defects (TLS), the exact origin and nature which remain elusive despite decades study. Recent advances towards realising stable high-coherence platforms for quantum computing has increased importance studying TLS in solid-state circuits, as they are a persistent source decoherence instability. Here we perform scanning gate microscopy on live superconducting circuit at millikelvin temperatures to...