Matches in SemOpenAlex for { <https://semopenalex.org/work/W2128475794> ?p ?o ?g. }
- W2128475794 endingPage "469" @default.
- W2128475794 startingPage "460" @default.
- W2128475794 abstract "Doping of nanocrystalline TiO2 powders with sizes ranging from 9.5 nm up to 19.1 nm was carried out with thiourea (TU) to introduce the C, N and S-species into the TiO2. The crystal size was determined by X-ray diffraction. Doped-TiO2 particles were colored while the undoped TiO2 was white. The edge of the absorption band edge was analyzed to describe the TiO2 band gap according to the indirect transitions theory of semiconductors. In the former analysis the energy distribution of the doped centers is discussed in terms of the Urbach's tail theory (K=K0expσ((hν−Eg)/kT)), being K the absorbance in the Kubelka–Munk equation. Evidence is presented for thiourea doped-TiO2 leading to Urbach's tail associated with the formation of states in the band-gap rather than a narrowing of the band gap. The photocatalytic activity of the doped-TiO2 was tested by the reduction of tetra-nitromethane to nitroform and by the oxidation of I− to I3−. The rate of formation of nitroform (NF) produced under 460 nm light increased for the smaller TiO2 nanoparticles. This suggests the formation of localized centers under 460 nm light. But under 366 nm light, the highest rate of NF formation was observed for samples with the biggest nanocrystal size. Under 366 nm light, the smaller particles show a low rate of nitroform formation due to a more favorable band-gap electron-hole recombination. Lipid phosphatidyl-ethanolcholine (PE) under 460 nm visible light in the presence of doped-TiO2 led to the formation of conjugated of double bonds in PE. This implies the formation of peroxy radicals due to the TiO2 e−cb localized electronic states under visible light irradiation." @default.
- W2128475794 created "2016-06-24" @default.
- W2128475794 creator A5012126259 @default.
- W2128475794 creator A5024673798 @default.
- W2128475794 creator A5052628793 @default.
- W2128475794 creator A5053491293 @default.
- W2128475794 creator A5060221914 @default.
- W2128475794 creator A5069274755 @default.
- W2128475794 creator A5084456508 @default.
- W2128475794 creator A5091717617 @default.
- W2128475794 date "2009-09-01" @default.
- W2128475794 modified "2023-10-01" @default.
- W2128475794 title "Correlations for photocatalytic activity and spectral features of the absorption band edge of TiO2 modified by thiourea" @default.
- W2128475794 cites W1966076042 @default.
- W2128475794 cites W1966634721 @default.
- W2128475794 cites W1971300337 @default.
- W2128475794 cites W1980748092 @default.
- W2128475794 cites W1980835224 @default.
- W2128475794 cites W1981255574 @default.
- W2128475794 cites W1987152514 @default.
- W2128475794 cites W1992924613 @default.
- W2128475794 cites W1997030603 @default.
- W2128475794 cites W2011549175 @default.
- W2128475794 cites W2020702410 @default.
- W2128475794 cites W2022256605 @default.
- W2128475794 cites W2029955177 @default.
- W2128475794 cites W2034888609 @default.
- W2128475794 cites W2042252980 @default.
- W2128475794 cites W2044057637 @default.
- W2128475794 cites W2050918266 @default.
- W2128475794 cites W2058150820 @default.
- W2128475794 cites W2062706176 @default.
- W2128475794 cites W2083226285 @default.
- W2128475794 cites W2084174257 @default.
- W2128475794 cites W2088952940 @default.
- W2128475794 cites W2111787764 @default.
- W2128475794 cites W2112203961 @default.
- W2128475794 cites W2121975741 @default.
- W2128475794 cites W2136252497 @default.
- W2128475794 cites W2169503622 @default.
- W2128475794 cites W2312199777 @default.
- W2128475794 cites W2320054962 @default.
- W2128475794 cites W2952869018 @default.
- W2128475794 doi "https://doi.org/10.1016/j.apcatb.2009.06.015" @default.
- W2128475794 hasPublicationYear "2009" @default.
- W2128475794 type Work @default.
- W2128475794 sameAs 2128475794 @default.
- W2128475794 citedByCount "46" @default.
- W2128475794 countsByYear W21284757942012 @default.
- W2128475794 countsByYear W21284757942013 @default.
- W2128475794 countsByYear W21284757942014 @default.
- W2128475794 countsByYear W21284757942015 @default.
- W2128475794 countsByYear W21284757942016 @default.
- W2128475794 countsByYear W21284757942017 @default.
- W2128475794 countsByYear W21284757942018 @default.
- W2128475794 countsByYear W21284757942019 @default.
- W2128475794 countsByYear W21284757942020 @default.
- W2128475794 countsByYear W21284757942021 @default.
- W2128475794 countsByYear W21284757942022 @default.
- W2128475794 countsByYear W21284757942023 @default.
- W2128475794 crossrefType "journal-article" @default.
- W2128475794 hasAuthorship W2128475794A5012126259 @default.
- W2128475794 hasAuthorship W2128475794A5024673798 @default.
- W2128475794 hasAuthorship W2128475794A5052628793 @default.
- W2128475794 hasAuthorship W2128475794A5053491293 @default.
- W2128475794 hasAuthorship W2128475794A5060221914 @default.
- W2128475794 hasAuthorship W2128475794A5069274755 @default.
- W2128475794 hasAuthorship W2128475794A5084456508 @default.
- W2128475794 hasAuthorship W2128475794A5091717617 @default.
- W2128475794 hasConcept C104663316 @default.
- W2128475794 hasConcept C108225325 @default.
- W2128475794 hasConcept C113196181 @default.
- W2128475794 hasConcept C120665830 @default.
- W2128475794 hasConcept C121332964 @default.
- W2128475794 hasConcept C125287762 @default.
- W2128475794 hasConcept C140676511 @default.
- W2128475794 hasConcept C159985019 @default.
- W2128475794 hasConcept C161790260 @default.
- W2128475794 hasConcept C171250308 @default.
- W2128475794 hasConcept C178790620 @default.
- W2128475794 hasConcept C181966813 @default.
- W2128475794 hasConcept C185592680 @default.
- W2128475794 hasConcept C192562407 @default.
- W2128475794 hasConcept C2780538656 @default.
- W2128475794 hasConcept C43617362 @default.
- W2128475794 hasConcept C49040817 @default.
- W2128475794 hasConcept C50792271 @default.
- W2128475794 hasConcept C55493867 @default.
- W2128475794 hasConcept C57863236 @default.
- W2128475794 hasConcept C65165184 @default.
- W2128475794 hasConcept C75473681 @default.
- W2128475794 hasConcept C98015330 @default.
- W2128475794 hasConceptScore W2128475794C104663316 @default.
- W2128475794 hasConceptScore W2128475794C108225325 @default.
- W2128475794 hasConceptScore W2128475794C113196181 @default.
- W2128475794 hasConceptScore W2128475794C120665830 @default.
- W2128475794 hasConceptScore W2128475794C121332964 @default.
- W2128475794 hasConceptScore W2128475794C125287762 @default.