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Photocatalytic niobium and tantallum doped monodispersed nanoparticles of titania for visible-ligt applications
Štengl, Václav; Houšková, Vendula; Bakardjieva, Snejana; Murafa, Nataliya
2009 - English
Niobium or tantalum doped anatase were prepared by thermal hydrolysis of peroxotitanium complex aqueous solutions dissolving niobium or tantalum peroxo-comples at 100 degrees C for 3 days The synthesized samples were characterized by X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), High Resolution Transmission Electron Microscopy (HRTEM), surface area (BET) and porosity determination (BJH) The photocatalytic activity of doped titania samples was determined by decomposition of salicylic acid during irradiation at 365 nm and 400 nm Niobium-doping caused the increase of unit cell constants of anatase and the shape change of anatase crystallites from spindle-like to cubic-like structure. The niobium and tantalum doping increases the stability of anatase to above 1000 degrees C by inhibiting the growth of Mania crystallites.
Keywords:
titania; peroxo-complexes; niobium
Available at various institutes of the ASCR
Photocatalytic niobium and tantallum doped monodispersed nanoparticles of titania for visible-ligt applications
Niobium or tantalum doped anatase were prepared by thermal hydrolysis of peroxotitanium complex aqueous solutions dissolving niobium or tantalum peroxo-comples at 100 degrees C for 3 days The ...
Microscopic and structural characterization of high velocity oxygen-flue and atmospheric plasma sprayed coatings
Murafa, Nataliya; Štengl, Václav; Ctibor, Pavel; Houšková, Vendula
2009 - English
TiO2 nano-powders were agglomerated by a spray drying process for applying to thermal spraying High Velocity Oxygen-Fuel (HVOF) and Atmospheric Plasma Spraying (APS) were used to deposit porous partially nanostructured TiO2 coatings Steel substrate was used for a coatings spraying Scanning Electron Microscopy (SEM), and X-Ray diffraction were performed to study the morphology and the crystalline phases of the titania coatings
Keywords:
powder; coating; rutile; anatase
Available at various institutes of the ASCR
Microscopic and structural characterization of high velocity oxygen-flue and atmospheric plasma sprayed coatings
TiO2 nano-powders were agglomerated by a spray drying process for applying to thermal spraying High Velocity Oxygen-Fuel (HVOF) and Atmospheric Plasma Spraying (APS) were used to deposit porous ...
Study of hydrogen evolution on PIGE and HMDE electrodes
Klosová, K.; Barath, Peter; Trnková, L.
2009 - English
Hydrogen evolution on a paraffin impregnated graphite electrode (PIGE) and hanging mercury drop electrode (HMDE) has been studied by linear sweep voltammetry (LSV) and elimination voltammetry with linear scan (EVLS).
Keywords:
paraffin impregnated graphite electrode; hanging mercury drop electrode
Available at various institutes of the ASCR
Study of hydrogen evolution on PIGE and HMDE electrodes
Hydrogen evolution on a paraffin impregnated graphite electrode (PIGE) and hanging mercury drop electrode (HMDE) has been studied by linear sweep voltammetry (LSV) and elimination voltammetry with ...
Ion liquids for safer lithium-ion batteries - aluminium corrosion in TFSI- based ILs
Nádherná, Martina; Dominko, R.; Gabersček, M.; Reiter, Jakub
2009 - English
The electrolytes based on ionic liquids were more compatible with electrode additives ( a combination of Al, CB and EPDM binder ) than the conventional electrolytes.
Keywords:
accumulators
Available at various institutes of the ASCR
Ion liquids for safer lithium-ion batteries - aluminium corrosion in TFSI- based ILs
The electrolytes based on ionic liquids were more compatible with electrode additives ( a combination of Al, CB and EPDM binder ) than the conventional electrolytes.
The LiOH and cobalt influence in Ni(OH)2
Špičák, P.; Máca, T.; Sedlaříková, M.; Vondrák, Jiří; Kazelle, J.
2009 - English
Lithium hydroxide has a benefical effect on stability of molecular weight Mw. This effect support cobalt influence in active mass.
Keywords:
cobalt influence
Available at various institutes of the ASCR
The LiOH and cobalt influence in Ni(OH)2
Lithium hydroxide has a benefical effect on stability of molecular weight Mw. This effect support cobalt influence in active mass.
Sodium used instead of lithium in the electrochromic devices
Svoboda, V.; Kazelle, J.; Vondrák, Jiří; Sedlaříková, M.
2009 - English
The mass of thin layer can be observed by the EQCM method. This method is based on the changes of the resonance frequency of a quartz crystal resonator.
Keywords:
EQCM
Available at various institutes of the ASCR
Sodium used instead of lithium in the electrochromic devices
The mass of thin layer can be observed by the EQCM method. This method is based on the changes of the resonance frequency of a quartz crystal resonator.
Thermal properties of sulfolane
Sedlaříková, M.; Vondrák, Jiří; Zatloukal, M.
2009 - English
The properties of CL as aprotic and highly polar solvent are promising for many applications.
Keywords:
sulfolane
Available at various institutes of the ASCR
Thermal properties of sulfolane
The properties of CL as aprotic and highly polar solvent are promising for many applications.
Utilization of alpha nickel hydroxide in alkaline accumulators
Máca, T.; Nezgoda, L.; Špachman, V.; Vondrák, Jiří; Sedlaříková, M.; Barath, P.; Vrbický, J.; Špičák, P.; Jirák, T.
2009 - English
Nickel hydroxide is used as an electrochemically active component of accumulator masses for positive electrode of Ni-Cd, Ni-MH and Ni-Zn alkaline accumulators.
Keywords:
alkaline accumulators
Available at various institutes of the ASCR
Utilization of alpha nickel hydroxide in alkaline accumulators
Nickel hydroxide is used as an electrochemically active component of accumulator masses for positive electrode of Ni-Cd, Ni-MH and Ni-Zn alkaline accumulators.
Aprotic gel polymer electrolytes
Vondrák, Jiří; Sedlaříková, M.; Krejza, O.
2008 - English
The systematic research of gel polymer electrolytes started in the days of 1st and 2nd Lithium Battery Meetings in Italy. The idea was rather unique - to "thicken" an aprotic solution of lithium sall with an inert polymer. Aprotické gelové polymerní elektrolyty.
Keywords:
gel polymer electrolytes
Available at various institutes of the ASCR
Aprotic gel polymer electrolytes
The systematic research of gel polymer electrolytes started in the days of 1st and 2nd Lithium Battery Meetings in Italy. The idea was rather unique - to "thicken" an aprotic solution of lithium sall ...
Galvanic deposition of metals with electrocatalytic properties
Knotek, T.; Kunovjánek, M.; Barath, Peter; Vondrák, Jiří
2008 - English
This work deals with problems of preparations galvanic deposition of metals formation alloys emphasis. Galvanotechnické vylučování kovů majících elektrokatalytické vlastnosti.
Keywords:
special electrochemical components
Available at various institutes of the ASCR
Galvanic deposition of metals with electrocatalytic properties
This work deals with problems of preparations galvanic deposition of metals formation alloys emphasis.
Galvanotechnické vylučování kovů majících elektrokatalytické vlastnosti.
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