08.09.2016 11:16
Abstract
The photocatalytic properties of bismuth-modified titania were studied by photobleaching of two aqueous azo dyes solutions (Reactive Black 5 and Acid Orange 7), and by photoinduced decomposition (PID) of acetaldehyde using in situ FTIR spectroscopy. Low bismuth doping...
08.09.2016 09:19
Abstract
Since its discovery, graphene and its oxidized form, graphene oxide (GO), have attracted interest in a wide range of technical applications. Concerns about their potential toxicity calls for scrutinized studies, but hitherto conflicting results have been reported which partly may...
08.09.2016 09:10
ABSTRACT:
Natural raw mineral tungstenite (WS2) was exfoliated to single-layer sheets using high intensity ultrasound. Exfoliation of bulk layered materials, such as WS2 by ultrasound is an attractive way to a large-scale preparation of mono- or few-layered crystals. To evaluate the quality of...
08.09.2016 09:05
Abstract
Nanosized ceria-zirconia mixed oxides were prepared using template-assisted co-precipitation approach followed by a hydrothermal treatment step. Some synthesis parameters (Ce/Zr ratio, presence of template and hydrothermal treatment temperature) were varied in order to get highly...
08.09.2016 09:01
Abstract
We present a new, simple, quick and ecologically friendly method of exfoliating graphite to produce graphene. The method is based on the intercalation of a permanganate M2MnO4 (M = K, Na, Li), which is formed by the reaction of a manganate MMnO4 with an alkali metal hydroxide MOH....
08.09.2016 08:48
Abstract
Two series of ceria zirconia mixed oxide samples with wide variation in the composition were synthesized using homogeneous precipitation with urea and template-assisted hydrothermal procedures. The samples were characterized by nitrogen physisorption, XRD, SEM, Raman, XPS,...
01.09.2016 14:43
Abstract
ZnO doped with Cr, Mn, Fe, Co, Ni and Cu was prepared by homogeneous hydrolysis of sulfates with urea. The samples were annealed at various temperatures and characterized by X-ray powder diffraction, UV/VIS reflectance spectroscopy, BET (Brunauer-Emmet-Teller) surface area and...
01.09.2016 13:18
Abstract
A series of multi-component materials on the base of titania doped with niobium, copper and/ or cobalt oxides was prepared and tested as catalysts for the total oxidation of ethyl acetate. The obtained materials are characterized by a complex of various physicochemical techniques,...
08.09.2015 08:56
Abstract
Titania-iron mixed oxides with various Ti:Fe ratio were prepared by homogeneous hydrolysis of aqueous solutions of titanium(IV) oxysulphate and iron(III) sulphate with urea as a precipitating agent. The synthesized samples were characterized by X-ray diffraction, Raman and...
