Abstract
In the present work, the effect of individual additives calculated as molar fractions of Sb2O3 and CeO2 (x Sb 2O3 range: 0.03–0.08 %, x CeO 2 range: 0.05–0.14 %), on the phase composition, phase transformation, and optical properties of photostable rutile titanium dioxide was studied using selective leaching method, ICP-AES technique, XRD method, spectrophotometric analysis and S BET measurements. The starting material was hydrated titanium dioxide. It was observed that the addition of Sb2O3 to TiO2 did not influence the anatase-rutile phase transformation, but increasing the CeO2 addition caused a decrease in the rutilization degree. Thus, CeO2 acted as an inhibitor of the TiO2 phase transformation. Sb2O3 addition to TiO2 presumably caused the formation of a co-phase of Sb with Ti. Cerium formed a separate phase, CeO2, and reacted partly with titanium, probably creating co-phase, Ce0.8Ti0.2O2. Comparing the colour of modified rutile titanium dioxide according to the type of the additive introduced, it was found that TiO2 with CeO2 had higher brightness but lower white tone values when compared with TiO2 modified with Sb2O3. The relative lightening power and grey tone of the modified TiO2 were higher in TiO2 modified with Sb2O3. The values of the photocatalytic activity measured in all TiO2 samples modified either with Sb2O3 or CeO2 were very similar and varied around the value of 21.
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© 2011 Institute of Chemistry, Slovak Academy of Sciences
Articles in the same Issue
- Mechanisms controlling lipid accumulation and polyunsaturated fatty acid synthesis in oleaginous fungi
- Predicting retention indices of aliphatic hydrocarbons on stationary phases modified with metallocyclams using quantitative structure-retention relationships
- New SPME fibre for analysis of mequinol emitted from DVDs
- Continuous production of citric acid from raw glycerol by Yarrowia lipolytica in cell recycle cultivation
- Enhancing the production of gamma-linolenic acid in Hansenula polymorpha by fed-batch fermentation using response surface methodology
- Process characteristics for a gas—liquid system agitated in a vessel equipped with a turbine impeller and tubular baffles
- Kinetic study of pyrolysis of waste water treatment plant sludge
- Transport phenomena in an agitated vessel with an eccentrically located impeller
- Membrane extraction of 1-phenylethanol from fermentation solution
- Theoretical study on transesterification in a combined process consisting of a reactive distillation column and a pervaporation unit
- Wall effects on terminal falling velocity of spherical particles moving in a Carreau model fluid
- The effect of the physical properties of the liquid phase on the gas-liquid mass transfer coefficient in two- and three-phase agitated systems
- Effectiveness of nitric oxide ozonation
- Modelling of nanocrystalline iron nitriding process — influence of specific surface area
- Effect of CeO2 and Sb2O3 on the phase transformation and optical properties of photostable titanium dioxide
- Carnauba wax microparticles produced by melt dispersion technique
- Complexation studies of 3-substituted β-diketones with selected d- and f-metal ions
- Influence of the solvent donor number on the O/W partition ratio of Cu(II) complexes of 1,2-dialkylimidazoles
- Continuous dialysis of sulphuric acid in the presence of zinc sulphate
- Differences in affinity of arylstilbazolium derivatives to tetraplex structures
- Fast ferritin immunoassay on PDMS microchips
Articles in the same Issue
- Mechanisms controlling lipid accumulation and polyunsaturated fatty acid synthesis in oleaginous fungi
- Predicting retention indices of aliphatic hydrocarbons on stationary phases modified with metallocyclams using quantitative structure-retention relationships
- New SPME fibre for analysis of mequinol emitted from DVDs
- Continuous production of citric acid from raw glycerol by Yarrowia lipolytica in cell recycle cultivation
- Enhancing the production of gamma-linolenic acid in Hansenula polymorpha by fed-batch fermentation using response surface methodology
- Process characteristics for a gas—liquid system agitated in a vessel equipped with a turbine impeller and tubular baffles
- Kinetic study of pyrolysis of waste water treatment plant sludge
- Transport phenomena in an agitated vessel with an eccentrically located impeller
- Membrane extraction of 1-phenylethanol from fermentation solution
- Theoretical study on transesterification in a combined process consisting of a reactive distillation column and a pervaporation unit
- Wall effects on terminal falling velocity of spherical particles moving in a Carreau model fluid
- The effect of the physical properties of the liquid phase on the gas-liquid mass transfer coefficient in two- and three-phase agitated systems
- Effectiveness of nitric oxide ozonation
- Modelling of nanocrystalline iron nitriding process — influence of specific surface area
- Effect of CeO2 and Sb2O3 on the phase transformation and optical properties of photostable titanium dioxide
- Carnauba wax microparticles produced by melt dispersion technique
- Complexation studies of 3-substituted β-diketones with selected d- and f-metal ions
- Influence of the solvent donor number on the O/W partition ratio of Cu(II) complexes of 1,2-dialkylimidazoles
- Continuous dialysis of sulphuric acid in the presence of zinc sulphate
- Differences in affinity of arylstilbazolium derivatives to tetraplex structures
- Fast ferritin immunoassay on PDMS microchips