Department of Materials Chemistry
| Department head: Henych Jiří, doc. Ing. Ph.D. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
AreaThe research is focused on the design, preparation, and characterization of molecules and (nano)materials with unique properties that can be used in industrial, environmental, and medical applications. We delineate the properties of prepared materials in details using a wide range of modern and advanced techniques. University students are actively participating in the research. We also supervise a number of doctoral dissertations. The results of our scientific work are also used in application outputs.Scientific Topics 1. Photoactive Inorganic Molecules and Materials The research is focused on the synthesis and characterization of new molecules, nanostructured materials, and luminescent (nano)materials and photosensitizers of singlet oxygen. The main emphasis is put on their stability, photostability, low toxicity, phototoxicity, biocompatibility with regard to their use as stable luminescent materials or in biology. In particular, we study the following systems: Transition Metal Cluster Complexes for Biological Applications (K. Lang, K. Kirakci), e.g., Mo, W, Re and Cu as new biomaterials with photodynamic and radiosensitizing properties for photodynamic treatment and X-ray contrast materials. Porphyrinoids (J. Hynek, K. Lang, K. Kirakci) such as covalent organic networks and inorganic polymers. The main interest is to obtain stable structures with luminescent properties and the ability to produce singlet oxygen after excitation for photodynamic applications (e.g., antibacterial layers, photodynamic therapy, oxygen sensing). Photocatalytic Materials (J. Henych) Borenium Fluorophores (K. Škoch) 2. Chemistry of Boron Theoretical Chemistry of Polyhedral Boranes (D. Hnyk) Activated Borane (J. Demel) Borenium Salts (K. Škoch) 3. Materials for Environmental Sustainability Our research effort is focused on the development of new materials for environmental applications such as the purification of contaminated air, surface water and soil and the reduction of power consumption. Metal–Organic Frameworks Based on Phosphinates (J. Demel) and trivalent metals such as Fe(III) or Al(III), which have a large pore size variability and can be carriers of different functional groups. In addition to tunable functionality, these materials exhibit increased aqueous stability and biocompatibility. They are mainly investigated for gas separation and sorption of environmental pollutants. Multiferroic and Thermoelectric Materials (J. Buršík) based on Fe (III) oxides in the form of thin films and ceramics. Nanocrystalline Reactive Metal Oxides (J. Henych) combined with low-dimensional nanomaterials (e.g., graphene, quantum dots, nanodiamonds) in unique nanocomposites: we investigate their structures, interactions and properties, thanks to which they bind and decompose on their surfaces highly toxic substances including chemical warfare agents (e.g., Sarin, Soman, Yperit) and environmental pollutants (e.g., VOC, pesticides). Applications In cooperation with industrial partners, we focus on the development of construction materials and materials for environmental applications: Remedial Product for Plasters and Facades (Z. Černý): ZnO nanosols with self-cleaning properties for the treatment of repair of contaminated building surfaces with algae or mold Materials for Neutron Radiation Shielding (Z. Černý): Combined materials for radiation shielding and secondary ionizing radiation shielding, special concretes including inorganic materials based on original matrices for the nuclear industry, coating systems for new concrete remediation technologies in the nuclear industry. Materials for 3D Printing (Z. Černý): Inorganic systems for 3D printing technology (Z. Černý) Water Treatment (Z. Černý): Nanoparticles for water treatment and stabilization Elimination of Toxic Materials (J. Henych): Powder materials for rapid deactivation of chemical warfare agents Functional Coatings and Smart Materials (Z. Černý) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Members
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FacilitiesX-Ray powder diffractometer Bruker D2.Scanning electron microscope (SEM) FEI Nova NanoSEM 450 with TLD, ETD, CBS, LVD a STEM detectors. Transmission/scanning electron microscope (S/TEM) FEI Talos F200X with EDS elemental detection and 3D mapping. Atomic force microscope (AFM) Bruker Dimension Icon. FTIR spectrometer Nicolet Nexus 670 with DTGS a MCT detectors and transmission, diffuse reflectance and ATR accessory. High-temperature reaction cell (Harrick) for in situ measurements. UV/Vis spectrometer Perkin Elmer Lambda 35 with an integration sphere. Fluorescence spectrometers: Avantes Avaspec-ULS2048XL, Fluorolog 3 spectrometer equipped with a cooled TBX-05-C photon detection module (Horiba Jobin Yvon) or a Hamamatsu H10330-45 photomultiplier, Quantaurus QY C11347-1 spectrometer (Hamamatsu) for measuring of absolute photoluminescence quantum yields. DLS Malvern Zetasizer Nano for particle size and Zeta potential measurements. Dionex UltiMate 3000 HPLC system with an autosampler and DAD detection. Gas chromatograph Agilent 6890N with quadrupole mass detector JEOL JMS-Q100GC. High-power ultrasound systems (1 kW a 2kW) with sonotrodes and water-cooled high-pressure batch and continuous-flow reactors. Belsorp max II instrument (Microtrac Bel) for the measuring nitrogen adsorption isotherms. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||