A5041036304- Environmental remediation with nanomaterials
- Iron oxide chemistry and applications
- Nanomaterials for catalytic reactions
- Magnetic Properties and Synthesis of Ferrites
- Electrochemical sensors and biosensors
- Catalysts for Methane Reforming
- Nanocluster Synthesis and Applications
- Nanoparticles: synthesis and applications
- Clay minerals and soil interactions
- Planetary Science and Exploration
- Photonic Crystals and Applications
- Electrochemical Analysis and Applications
- Advanced Photocatalysis Techniques
- Minerals Flotation and Separation Techniques
- Laser-Ablation Synthesis of Nanoparticles
- Advanced biosensing and bioanalysis techniques
- Gold and Silver Nanoparticles Synthesis and Applications
- Copper-based nanomaterials and applications
- Adsorption and biosorption for pollutant removal
- Arsenic contamination and mitigation
- Catalysis and Oxidation Reactions
- Graphene research and applications
- Laser Material Processing Techniques
- Catalytic Processes in Materials Science
- Astro and Planetary Science
Regional Centre of Advanced Technologies and Materials
2016-2025
Palacký University Olomouc
2016-2025
Moravská Vysoká Skola Olomouc
2017
Abstract The hydrogenation of nitriles to amines represents an important and frequently used industrial process due the broad applicability resulting products in chemistry life sciences. Despite existing portfolio catalysts reported for nitriles, development iron-based heterogeneous this is still a challenge. Here, we show that impregnation pyrolysis iron(II) acetate on commercial silica produces reusable Fe/Fe–O@SiO 2 catalyst with well-defined structure comprising fayalite phase at Si–Fe...
There are several green methods available to synthesize iron-based nanoparticles using different bio-based reducing agents. Although their useful properties in degradation of organic dyes, chlorinated organics, or arsenic have been described earlier, characterization has ambiguous, and further research is needed this area. Synthesis details on produced by tea extract detail; was carried out transmission electron microscopy (TEM), X-ray powder diffraction (XRD), UV–vis spectrometry followed...
We present a new class of fluorescent carbon dots (CDs) prepared hydrothermally from cationic surfactant cetylpyridinium chloride (CPC). Because the high content, amphiphilicity, and presence heteroaromatic π system, CPC acts as source, stabilizing agent, contributing fluorophore in CDs-based system. The surfactant-derived exhibit tunable blue–green–yellow photoluminescence dependent upon solvent polarity, reaction conditions, excitation wavelength, excellent long-term colloidal...
Nitriding has been used for decades to improve the corrosion resistance of iron and steel materials. Moreover, nitrides (FexN) have shown give an outstanding catalytic performance in a wide range applications. We demonstrate that nitriding also substantially enhances reactivity zerovalent nanoparticles (nZVI) groundwater remediation, alongside reducing particle corrosion. Two different types FexN were synthesized by passing gaseous NH3/N2 mixtures over pristine nZVI at elevated temperatures....
Selenium nanoparticles (SeNPs) have recently attracted attention for their antimicrobial and anticancer activities. Nevertheless, use remains limited due to stability issues. The objective of this study is investigate the impact different reaction conditions (including reducing stabilizing agents, as well temperature) on water dispersion characteristics, stability, biological activity SeNPs. particle characteristics were controlled using sodium borohydride a strong agent ascorbic acid mild...
The dopaminergic neural system is a crucial part of the brain responsible for many its functions including mood, arousal, and other roles. Dopamine key neurotransmitter this system, determination level presents demanding task needed deeper understanding processes, even pathological, involving part. In work, we present method fast analysis dopamine levels in samples cerebrospinal fluid mouse striatum. based on nanocomposite composed magnetite silver nanoparticles, whose surface modified with...
A facile approach for the synthesis of magnetite microspheres with flower-like morphology is reported that proceeds via reduction iron(III) oxide under a hydrogen atmosphere. The ensuing magnetic catalyst well characterized by XRD, FE-SEM, TEM, N2 adsorption-desorption isotherm, and Mössbauer spectroscopy explored simple yet efficient transfer hydrogenation variety nitroarenes to respective anilines in good excellent yields (up 98%) employing hydrazine hydrate. could be easily separated at...
Nickel ferrite NiFe2O4 is a typical soft magnetic with high electrical resistivity used as frequency material. Neodymium (Nd3+) doped materials were fabricated using solid state reaction. The properties of the obtained material investigated by X-Ray Diffraction (XRD), Scanning Electron Microscope (SEM), Fourier-Transform Infrared Spectroscopy (FT-IR), measurements on SQUID and Mössbauer spectroscopy. It was found that consists two different phases: Nd3+ NdFeO3. ions occupy cation sites...
Glass waveguides are the fundamental component of advanced photonic circuits and play a pivotal role in diverse applications, including quantum information processing, light generation, imaging, data storage, sensing platforms. Up to date, fabrication glass relies mainly on demanding chemical processes or employment expensive ultrafast laser equipment. In this work, we demonstrate an advanced, simple, low-temperature, postmelting encapsulation procedure for development waveguides....
The main objective of the present study is to synthesize iron oxide catalysts with engineered crystal defects and clarify their crucial impact on final catalytic activity in CO2 hydrogenation process. method used engineer desired based changing precipitation reaction conditions, such as addition rate order precipitant during primary phase synthesis catalysts. catalyst process formation oxalates first step, followed by thermal decomposition into oxides second which were subsequently tested...
The emerging class of 2D non-van der Waals (n-vdW) materials, including iron oxides, possesses unique properties and high applicability, making them attractive for various technological applications. However, the synthesis these materials through a scalable eco-friendly method remains challenge, as most known chemical exfoliation processes require toxic organic solvents. In this study, we report green hematene (α-Fe2O3) using an ultrasound-supported earth-abundant oxide ore in pure aqueous...
A novel, simple, high-yield synthesis of Hägg carbide nanoparticles is presented. The developed χ-Fe<sub>5</sub>C<sub>2</sub>-based platform shows improved sensitivity towards the determination metronidazole.
In this study, we report on structural, magnetic, and electric features of β-Fe<sub>2</sub>O<sub>3</sub>identifying its magnetic ground state potentiality in photoelectrochemical applications.
There is an urgent need for a simple and up-scalable method the preparation of supercapacitor electrode materials due to increasing global energy consumption worldwide.
Semiconductor junctions can enhance separation of photopromoted charge carriers and broaden the light harvesting range hence are an effective approach to improve performance photocatalysts. Typical semiconductor used in photocatalysis (heterojunctions) formed by bringing two different semiconductors into contact, while homojunctions constructed interfacing domains same phase less explored. Herein, we introduce a method engineer at surface brookite TiO2 nanorods. We first decorated nanorods...