A5016519719- Iron oxide chemistry and applications
- Catalytic Processes in Materials Science
- Semiconductor materials and interfaces
- Advanced Photocatalysis Techniques
- Advancements in Battery Materials
- Nanomaterials for catalytic reactions
- Transition Metal Oxide Nanomaterials
- Advanced Nanomaterials in Catalysis
- Electrospun Nanofibers in Biomedical Applications
- X-ray Diffraction in Crystallography
- Pigment Synthesis and Properties
- Intermetallics and Advanced Alloy Properties
- Copper-based nanomaterials and applications
- Shape Memory Alloy Transformations
- Conducting polymers and applications
- Polyoxometalates: Synthesis and Applications
- Crystallization and Solubility Studies
- Extraction and Separation Processes
- Liquid Crystal Research Advancements
- Catalysts for Methane Reforming
- Supercapacitor Materials and Fabrication
- TiO2 Photocatalysis and Solar Cells
- Catalysis for Biomass Conversion
- Crystallography and molecular interactions
- Crystal structures of chemical compounds
Czech Academy of Sciences, Institute of Physics
2015-2024
Czech Academy of Sciences
2011-2024
Camera di Commercio di Firenze
2022
Yale University
2022
Karlovac University of Applied Sciences
2020
Hearst (United States)
2020
Abstract A simple, rapid, and low‐cost method for preparation of Co 3 O 4 nanoparticles (Co ‐1 ‐2) using solid‐state calcination mixture Co(NO ) 2 ∙6H salicylic acid (1:1 weight ratio) at two different temperatures 500 600°C is reported. The morphologies structure the as‐prepared were characterized X‐ray diffraction (XRD) transmission electron microscope (TEM). In addition, we tested them as an anode material lithium‐ion batteries. cycling stability electrochemical performance excellent....
Nanofibrous scaffolds loaded with bioactive nanoparticles are promising materials for bone tissue engineering.In this study, composite nanofibrous membranes containing a copolymer of L-lactide and glycolide (PLGA) diamond were fabricated by an electrospinning technique. PLGA was dissolved in mixture methylene chloride dimethyl formamide (2:3) at concentration 2.3 wt%, nanodiamond (ND) powder added 0.7 wt% (about 23 dry PLGA).In the scaffolds, ND particles either arranged like beads central...
Nearly equiatomic AlCoCrFeNi alloy samples were prepared by induction melting and mechanical alloying (MA) combined with spark plasma sintering (SPS). The cast sample showed a dendritic microstructure composed of spinodally decomposed nanometric constituents the B2 BCC phases. sintered exhibited an ultrafine-grained phase FCC solid solution Cr23C6 carbides. MA+SPS was strengthened compressive stress-strain test up to yield strength 2029 ± 5 MPa, resulting significantly higher compared 1366...
The diffraction data of η'-Cu(3+x)(Si,Ge) were collected by 3D quantitative electron tomography on a submicrometer-sized sample, and the structure was solved charge-flipping algorithm in superspace. It is shown that trigonal, it incommensurately modulated with two modulation vectors q(1) = (α, α, 1/3) q(2) (-2α, 1/3), superspace group P31m(α, 1/3)000(-2α, 1/3)000. functions some atoms are very complicated reach amplitudes comparable unit cell dimensions. can be described as sheets Cu...
Keggin-type polyoxometalates (H<sub>3</sub>PMo<sub>12</sub>O<sub>40</sub>, H<sub>3</sub>PW<sub>12</sub>O<sub>40</sub> and H<sub>4</sub>SiW<sub>12</sub>O<sub>40</sub>) were supported chemically on silicacoated perovskite-type LaMnO<sub>3</sub> nanoparticles for the removal of organic pollutants in water.
The development of intrinsic vacancies in SnSe single crystals was investigated as a function annealing temperature by means positron annihilation spectroscopy accompanied transport measurements. It has been demonstrated that two types are present single-crystalline SnSe. While Sn dominate the low-temperature region, Se and vacancy clusters govern high-temperature region. These findings supported theoretical calculations enabling direct detection quantification most favorable type vacancies....
Various types of nanofibers are increasingly used in tissue engineering, mainly for their ability to mimic the architecture at nanoscale. We evaluated adhesion, growth, viability, and differentiation human osteoblast-like MG 63 cells on polylactide (PLA) prepared by needle-less electrospinning loaded with 5 or 15 wt % hydroxyapatite (HA) nanoparticles. On day 7 after seeding, cell number was highest samples HA. This result confirmed XTT test, especially dynamic cultivation, when...
There are relatively few nanotechnologies that can produce nanocomposite scaffolds for cell growth. Electrospinning has emerged as the foremost method of producing nanofibrous biomimetic tissue engineering applications. In this study diamond nanoparticles were integrated into a polymer solution to develop scaffold containing poly(lactide-co-glycolide) (PLGA) loaded with nanoparticles. To investigate effect adding PLGA scaffolds, primary human mesenchymal stem cells (hMSCs) seeded on...
The effect of magnetic nanoparticles size and concentration on nematic liquid crystal (NLC) behavior in a field was investigated. magneto-optical investigation using measurements the light transmission through used to study structural changes induced by an applied weak field. Magnetic Fe
Abstract Cerium oxide (CeO 2 ) nanoparticles via solution combustion technique using Ce(NO 3 as an oxidizer and benzoic acid fuel were prepared at two different temperatures (500 600°C). The as‐synthesized CeO characterized FT‐IR, PL, BET, XRD, VSM, TEM techniques. results of FT‐IR XRD techniques show that cerium have been successfully synthesized. absence other peaks in the pattern indicates there are no impurities these compounds. images also confirm synthesis smaller than 20 nm. VSM weak...
Liquid crystal doped with aerosil nanoparticles is known for exhibiting an electromechanical memory effect. After exposing the composite to electric field state induced by stays remembered due presence of nanoparticles. In this paper, we investigated effect and magnetic fields. 4-cyano-4′-pentylbiphenyl non-magnetic a mixture elongated goethite were explored via capacitance measurements. Studied systems exhibited hysteresis in capacitance-voltage capacitance-magnetic dependences. The...
We report the anomalous Nernst effect (ANE) in large-grain ceramics, nanogranular and thin films of ${\mathrm{La}}_{0.7}{\mathrm{Sr}}_{0.3}\mathrm{Co}{\mathrm{O}}_{3}$, measured over temperature range 5--300 K. The study is complemented with thermopower, resistivity, magnetic measurements. temperature-dependent ANE below Curie ${T}_{\mathrm{C}}$ (240--250 K) analyzed help longitudinal resistivity Seebeck using a previously proposed formula derived by combination Onsager reciprocity, Mott...
Novel magnetic hybrid nanomaterials 1 (LaFeO 3 .Fe O 4 @SiO 2 ‐NH /PW 12 ) were synthesized by supporting phosphotungstic acid (H PW 40 ; on LaFeO through sono‐assisted method. The fully characterized using FT‐IR, XRD, UV–vis, BET‐BJH, VSM, SEM, and TEM analyses. UV–vis confirmed successful synthesis of nanomaterials. SEM images revealed spherical morphology with core‐shell structure for . VSM results the property suggested it as easily recyclable photocatalyst removal organic dyes from...
In the present study, set of directionally solidified samples from alloy with nominal composition Co38Ni33Al29 were prepared using Bridgman and floating zone method. Various growth rates results in various solidification structures, mainly different ratio disordered phase γ-cobalt solid solution ordered (β-B2 (Co,Ni)Al. The has fundamental effect on temperature martensitic transition. This evolution structure was studied by metallography, SEM, EPMA EBSD methods. are discussed frame...