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Materials Science Poland
2008 Vol. 26, No. 3 518--526
EN A novel, visible-light-activated Fe2O3/SnO2 photocatalyst was prepared by the co-precipitation method, and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), N2 adsorption–desorption measurement and UV-Vis diffuse reflectance spectroscopy. The phase composition, crysta[...]
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Physicochemical Problems of Mineral Processing
EN The aim of this research was to prepare rare metal (Er, Yb)-modified TiO2 nanoparticles by a sol-gel method. The obtained nanoparticles were characterized by BET measurements, UV-Vis spectra and the Laser-induced fluorescence (LIF) method. Visible light photocatalytic activity of the sample was stud[...]
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Physicochemical Problems of Mineral Processing
EN Iron modified TiO2 was prepared by the sol-gel method and surface modification method followed by calcination at 400°C. Two types of titanium dioxide: TiO2 ST-01(Ishihara Sangyo Ltd., Japan;300 m2/g), and TiO2 P25 (Evonik, Germany, 50 m2/g) were used in the grinding procedure. The photocatalysts wer[...]
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Physicochemical Problems of Mineral Processing
2010 Vol. 45 57-71
EN In order to avoid large problems regarding peeling of the titania layer coated on the substrate, we developed an epoch-making "strong titania fiber" consisting of photoactive surface layer with a nanometer-scale compositional gradient, which can effectively oxidize any kind of organic materials. An [...]
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Physicochemical Problems of Mineral Processing
2010 Vol. 45 29-38
EN TiO2 was surface modified with silver, gold and platinum ion clusters to improve its photocatalytic activity. The effect of metal content, the kind of dopant and titanium dioxide source (commercial - P25 and ST-01) used during preparation procedure on photoactivity were investigated. The photocataly[...]
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Physicochemical Problems of Mineral Processing
2010 Vol. 45 141-151
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Physicochemical Problems of Mineral Processing
2010 Vol. 45 39-47
EN The aim of the present work was to remove organic impurities from water using a reactor with photoactive refill. Application of the photoactive refill solves the problem of the replacement of the reactor or its parts when the photocatalyst activity decreases. In case of photocatalytic activity drop,[...]
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Polish Journal of Chemistry
2007 Vol. 81, nr 10 1819-1819
EN This paper reports results of an investigation of the removal of Indanthrene BR Violet (IBRV) dye in a photoelectrochemical oxidation reactor with semiconductor suspended in the aqueous solution. TiO2 nano powder is prepared by sol-gel method to improve catalytic efficiency. X-ray diffraction analys[...]
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Polish Journal of Chemistry
EN Anatase-type TiO2 composites with various allotropic forms of carbon (carbon nanotubes, carbon nanofibers and activated carbon) were prepared and characterized by X-ray diffraction (XRD), nitrogen adsorption, thermogravimetry-differential scanning calorimetry (TG-DSC), Fourier-transform infrared (FT[...]
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Prace Naukowe Instytutu Chemii i Technologii Nafty i Węgla Politechniki Wrocławskiej. Konferencje
EN Titania aerogels were prepared. Their physicochemical properties and adsorption capability were determined. Commercial TiO2 Degussa was examined for comparison. The activities of the catalysts in the photocatalytic processes were tested. Two para derivatives of phenol were chosen as model compounds [...]
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Polish Journal of Chemistry
2001 Vol. 75, nr 10 1543-1551
EN The zeolite-Y entrapped ruthenium tris-2,2_-bipyridine complex, in 1% wt. metallized with platinum (Z-[Ru(bpy)3]2+/Pt), has been examined as a new photocatalyst for wastewater treatment in flow reactors of the pilot plant at the Plataforma Solar de Almeria, in Spain. The catalyst generated by the te[...]
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Prace Naukowe Instytutu Chemii i Technologii Nafty i Węgla Politechniki Wrocławskiej. Konferencje
EN The photodegradation processes using semi-conductor like TiO2 as a catalyst, provide new methods for waste water treatment. In this method the step of adsorption of organic compounds on the semi-conductor surface could have a prominent influence. We describe the adsorption phenomen for two classes o[...]
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Journal of Polish CIMEEAC
EN This paper constitutes the approach to correlate the results of gas purification properties performed with aid of photocatalysis with the cytotoxicity test results. The gas purification by means of photocatalysis is a subject well known a profusely described in literature. Easiness and continence of[...]
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Physicochemical Problems of Mineral Processing
EN TiO2 was surface modified with silver, gold, palladium and platinum ion clusters to improve its photocatalytic activity. The effect of metal content and kind of dopant used during preparation procedure on the photoactivity were investigated. in toluene removal which was used as a model volatile orga[...]
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Environment Protection Engineering
2016 Vol. 42, nr 4 151--159
EN Oxidative pretreatment methods such as the Fenton oxidation, ozonation, and photocatalytic treatment have been compared in reducing adsorbable organic halogens (AOX) and chlorophenolic compounds in untreated kraft pulp bleaching effluent. Their efficiency was also studied on effluent ultrafiltration[...]
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Physicochemical Problems of Mineral Processing
2010 Vol. 45 99-112
EN Photocatalytic activity of Ag/TiO2 composites obtained by photoreduction treatment (PRT) was investigated. The composite materials, containing 1.0 and 2.1 wt% of silver nanoparticles were obtained by depositing silver on the Evonic-Degussa P25 titania surface. Ag/TiO2 samples were examined by SEM, X[...]
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Materials Science Poland
2014 Vol. 32, No. 3 514--520
EN In this study, we fabricated ZnO nanostructures using bamboo fibers as templates. The starting material used was zinc acetate, and the nanostructures were synthesized by soaking and calcining the bamboo fibers. The fabricated nanostructures were characterized using X-ray powder diffraction (XRD) ana[...]
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Journal of Ecological Engineering
2018 Vol. 19, nr 4 260--268
EN This paper presents the evaluation of the photocatalytic kinetics of bisphenol A decomposition in the presence of commercial titanium(IV) oxide and modified photocatalysts (composites). The following modification methods were used: mechanical mixing, calcination and impregnation. The decomposition p[...]
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Polish Journal of Chemical Technology
EN The paper presents a simple way to improve the photocatalytic properties of titanium dioxide using mechanochemical method. The TiO2 (Anatase) powders was subjected to high-energy ball milling in dry environment and in methanol. It has been shown that it is possible to induce the phas[...]
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Polish Journal of Chemical Technology
2018 Vol. 20, nr 1 103--108
EN Ordered nanocrystalline titania-mesoporous silica nanotube structures are synthesized by hydrolysis of the titania precursor inside pours silica shell. Silica coating surrounding carbon nanotubes was further removed by thermal reduction. The proposed method of functionalization silica channels with [...]
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