11. Hematite-based nanocomposites for light-activated applications: Synergistic role of TiO2 and Au introductionGiorgio Carraro, Chiara Maccato, Alberto Gasparotto, Michael E.A Warwick, Cinzia Sada, Stuart Turner, Antonio Bazzo, Teresa Andreu, Olena Pliekhova, Dorota Korte, Urška Lavrenčič Štangar, Gustaaf Van Tendeloo, Joan Ramón Morante, Davide Barreca, 2017, original scientific article Found in: ključnih besedah
Keywords: Fe2O3-TiO2-Au, Plasma enhanced-chemical vapor deposition, Sputtering, Photocatalysis
Published: 10.10.2016; Views: 4269; Downloads: 0
 Fulltext (1,16 MB) |
12. Reuse of TiO2-based catalyst for solar driven water treatment; thermal and chemical reactivationUrška Lavrenčič Štangar, Dominik Kosir, Hrvoje Kušić, Marin Kovacic, Subhan Salaeh, Dionysios D. Dionysiou, Ana Lončarić Božić, 2017, original scientific article Found in: ključnih besedah
Keywords: Solar photocatalysis, TiO2-FeZ, Thermal and chemical reactivation, Ozone, Diclofenac
Published: 03.11.2016; Views: 4014; Downloads: 0
Fulltext (3,57 MB) |
13. Correlations between photocatalytic activity and chemical structure of Cu-modified TiO2–SiO2 nanoparticle compositesIztok Arčon, Urška Lavrenčič Štangar, T. Čižmar, 2016, original scientific article Abstract: Copper-modified TiO2–SiO2photocatalysts were prepared by sol–gel method based on organic copper,silicon and titanium precursors. Copper concentration varied from 0.1 to 3.0 mol%. A widely appliedmodel reaction of photocatalytic oxidation of terephtalic acid (TPA) in water solution was used in order toevaluate the catalytic activities of elaborated samples. The crystal structures of the titania components ofall tested titania–silica species were studied using XRD analysis. The influence of Cu2+cation incorporationon the crystal structure of titania, as well as the chemical states and the neighbouring structures of coppercations, have been examined by means of Cu K-edge EXAFS and XANES analysis. The experimental datashow that there is a ten times increase in photocatalytic activity when TiO2–SiO2matrix is modified with0.1 mol% of Cu. It can be supposed that an enhancement of photocatalytic activity of low-concentratedcopper-modified titania–silica nanocomposites is probably due to a close attachment of Cu2+cationsto the surfaces of photocatalytically active TiO2nanoparticles. In this case, Cu2+cations may possiblyact as free electron traps reducing the intensity of recombination between opposite free charge carriers(electrons, holes) available at the photocatalyst’s surface.
Found in: ključnih besedah
Keywords: Cu-modified TiO2–SiO2photocatalysts, Titanium dioxide, Metal doping, Cu K-edge XANES, EXAFS, Photocatalytic activitya
Published: 17.01.2017; Views: 4352; Downloads: 0
Fulltext (580,62 KB) |
14. EFFECT OF DIFFERENT LOADING CONCENTRATIONS OF Cu AND Zr METAL IONS ON PHOTOCATALYTIC ACTIVITY OF P25Ikram Muhammad, master's thesis Found in: ključnih besedah
Keywords: odpadne vode, degradacija, ki onesnažuje, organska predhodniki, TiO2 photocatalysis, fotokatalitsko aktivnost, Zr in Cu dopantov, superoksid anioni, hidroksilni radikal, metilen modro
Published: 06.02.2017; Views: 5428; Downloads: 244
Fulltext (2,94 MB) |
15. |
16. Transparent titania-zirconia-silica thin films for self-cleaning and photocatalytic applicationsUrška Lavrenčič Štangar, Vlasta Brezova, Nives Vodišek, Kandalam Ramanujachary, 2017, published scientific conference contribution Found in: ključnih besedah
Keywords: TiO2, ZrO2, thin films, photocatalysis, mechanical stability
Published: 13.03.2017; Views: 4194; Downloads: 5
Fulltext (1,46 MB) |
17. Transparent titania-zirconia thin films for self-cleaning and photocatalytic applicationVlasta Brezová, Kandalam Ramanujachary, Nives Vodišek, Urška Lavrenčič Štangar, 2016, published scientific conference contribution abstract Abstract: Thin films were prepared by sol-gel process, where different amount of zirconia were added to titania.
Photocatalytic activity of thin films was measured by two methods i) determination of degradation ration of methyl stearate with measuring the contact angle and ii) formation of hydroxyterephthalic acid was measured by spectrofluorometer.
Prepared samples were characterized by UV-Vis spectrophotometer, SEM, XRD, FT-IR ATR, and BET.
The result of measurements of photocatalytic activity shows that the highest activity has a sample without addition of zirconia, but mechanical stability of that sample is worse.
Found in: ključnih besedah
Keywords: photocatalysis, ZrO2/ TiO2, thin films, self-cleaning, low-temperature, sol-gel process
Published: 14.03.2017; Views: 4285; Downloads: 193
Fulltext (462,52 KB) |
18. |
19. |
20. Design and evaluation of a compact photocatalytic reactor for water treatmentUrška Lavrenčič Štangar, Lev Matoh, Olena Pliekhova, Marko Kete, 2017, original scientific article Found in: ključnih besedah
Keywords: Photocatalysis, Photocatalytic ozonation, TiO2, Al2O3 monolith, LAS, PBIC, Reactive blue 19, Phenol
Published: 24.08.2017; Views: 3949; Downloads: 0
Fulltext (6,74 MB) |
