National Repository of Grey Literature 6 records found  Search took 0.01 seconds. 
Rheologie vodných nanosuspenzí
Večeř, Marek ; Tihon, Jaroslav ; Pěnkavová, Věra
Recent works have shown that suspensions of highly thermally conducting nanoparticles have great potential as a high-energy carrier for small flow channel systems. Information on the viscosity of nanofluids is needed for successful modeling of such flow systems.
Příprava a charakterizace dobře definovaných tenkých vrstev oxidů přechodných kovů
Krejčíková, Simona ; Strýhal, Z. ; Pavlík, J. ; Kužel, R. ; Matějová, Lenka ; Šolcová, Olga
The differences in surface morphology, roughness, structural and textural properties of thin nanolayers of Titania that is promising as a catalytic agent e.g. for removing of organic impurities from waste water and air were studied. Special attention was focused on testing of superhydrophilic properties by contact angel measuring.
Vliv velikosti krystalitů TiO2 na jeho fotokatalytickou reaktivitu
Kočí, K. ; Obalová, L. ; Matějová, Lenka ; Šolcová, Olga ; Plachá, D. ; Lacný, Z.
The aim of this work is to assess the effect of particle size on photocatalytic reactivity of TiO2 exemplified by the photoreduction of CO2 by water. As the particle size decreased higher methane yields over the TiO2 nanoparticles under the illumination of the light were obtained. Results were compared with yields of mathane over Degussa P25, which in non-porous. We demonstrated that photoreactivity of Degussa P25 was lower than all tested TiO2 nanoparticles.
Příprava TiO2 pro fotokatalytické aplikace
Matějová, Lenka ; Cajthaml, Tomáš ; Matěj, Z. ; Strýhal, Z. ; Benada, Oldřich ; Šolcová, Olga
Powder nanoporous TiO2 with narrow monodisperse pore-size distribution in the range from 2 to 30 nm were prepared by self-assemble micelle system in nonpolar and polar solvents at laboratory temperature and pressure. Nonionic surfactants Triton X-102, 100, 114, 45, 15 were used for preparation of micelle systems. Various approaches were applied for removing of residual organic matter from prepared titania gels: a) calcination, b) improved extraction by supercritical (CO2) and subcritical fluids (H2O, CH3OH) and c) the combination of both forenamed approaches.
Správné stanovení texturních vlastností mikro-mesoporézních materiálů
Šolcová, Olga ; Matějová, Lenka ; Hudec, P. ; Schneider, Petr
Evaluation of micropore volume and mesopore surface area in microporous-mesoporous samples is presented.
Samonosné pelety z molekulového síta (Al-)SBA-15
Topka, Pavel ; Klusoň, Petr ; Šolcová, Olga
This contribution describes self-supporting pellets from (Al-)SBA-15 molecular sieve.

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