Matches in SemOpenAlex for { <https://semopenalex.org/work/W2084889929> ?p ?o ?g. }
- W2084889929 endingPage "8939" @default.
- W2084889929 startingPage "8931" @default.
- W2084889929 abstract "V-loaded anatase materials with V/Ti molar ratios in the range 0.02−0.06 have been prepared by a sol−gel procedure under inert atmosphere. Combining macroscopic (XRD, TEM, and BET) and spectroscopic (XPS, Raman, ESR, and 51V NMR) techniques, we show that most of the V species are incorporated within the anatase bulk (amount of surface V species below the sensitivity limit of XPS, i.e., lower than 0.5−1 at. %). As revealed by XPS and in situ XRD measurements, upon calcination below 600 °C in flowing oxygen, a migration of V species from the anatase bulk toward its surface, associated with a sintering of anatase particles, is induced. Above 600 °C, VxTi1-xO2 rutile solid solutions are formed. The threshold temperature at which anatase particles transform into rutile is affected by the V/Ti molar ratio. Located near 650 ± 50 °C in our experimental conditions for V-free titania, this temperature regularly increases with V loading and can be located at 750 ± 50 °C for a V/Ti molar ratio of 0.06. Furthermore, on a parallel experiment performed on a mechanical mixture of V-free titania and vanadia (V/Ti molar ratio of 0.05), we have observed that this temperature decreases to 550 ± 50 °C. These observations strongly suggest that the decrease in the threshold temperature at which V-loaded anatase materials are transformed into rutile, which has been previously observed, extensively discussed in the literature and attributed to vanadium, is not actually due to V species incorporated within the anatase bulk. Our results rather suggest that rutile formation is initiated near the surface of anatase particles and that a minimal amount of surface V species is required to decrease the threshold temperature at which rutile can be detected." @default.
- W2084889929 created "2016-06-24" @default.
- W2084889929 creator A5003839600 @default.
- W2084889929 creator A5035568161 @default.
- W2084889929 creator A5045676535 @default.
- W2084889929 creator A5068253217 @default.
- W2084889929 creator A5083845597 @default.
- W2084889929 date "2000-08-30" @default.
- W2084889929 modified "2023-09-26" @default.
- W2084889929 title "Sintering and Phase Transformation of V-Loaded Anatase Materials Containing Bulk and Surface V Species" @default.
- W2084889929 cites W111358053 @default.
- W2084889929 cites W1430763899 @default.
- W2084889929 cites W1638760679 @default.
- W2084889929 cites W1963940205 @default.
- W2084889929 cites W1964466767 @default.
- W2084889929 cites W1966257485 @default.
- W2084889929 cites W1968618065 @default.
- W2084889929 cites W1979231118 @default.
- W2084889929 cites W1985000812 @default.
- W2084889929 cites W1987152514 @default.
- W2084889929 cites W1988596938 @default.
- W2084889929 cites W1988844063 @default.
- W2084889929 cites W2002792247 @default.
- W2084889929 cites W2013176406 @default.
- W2084889929 cites W2013469783 @default.
- W2084889929 cites W2014386630 @default.
- W2084889929 cites W2014416110 @default.
- W2084889929 cites W2014612195 @default.
- W2084889929 cites W2020862859 @default.
- W2084889929 cites W2025171097 @default.
- W2084889929 cites W2025483110 @default.
- W2084889929 cites W2028315828 @default.
- W2084889929 cites W2046456316 @default.
- W2084889929 cites W2046573061 @default.
- W2084889929 cites W2055911306 @default.
- W2084889929 cites W2065331796 @default.
- W2084889929 cites W2069385878 @default.
- W2084889929 cites W2078300939 @default.
- W2084889929 cites W2078419259 @default.
- W2084889929 cites W2086663376 @default.
- W2084889929 cites W2087792316 @default.
- W2084889929 cites W2088284470 @default.
- W2084889929 cites W2107867262 @default.
- W2084889929 cites W2119300663 @default.
- W2084889929 cites W2247969026 @default.
- W2084889929 cites W2519492446 @default.
- W2084889929 cites W282335807 @default.
- W2084889929 cites W2949720911 @default.
- W2084889929 cites W2951040322 @default.
- W2084889929 cites W4231111743 @default.
- W2084889929 cites W7494469 @default.
- W2084889929 doi "https://doi.org/10.1021/jp000569m" @default.
- W2084889929 hasPublicationYear "2000" @default.
- W2084889929 type Work @default.
- W2084889929 sameAs 2084889929 @default.
- W2084889929 citedByCount "32" @default.
- W2084889929 countsByYear W20848899292012 @default.
- W2084889929 countsByYear W20848899292013 @default.
- W2084889929 countsByYear W20848899292015 @default.
- W2084889929 countsByYear W20848899292016 @default.
- W2084889929 countsByYear W20848899292018 @default.
- W2084889929 countsByYear W20848899292019 @default.
- W2084889929 countsByYear W20848899292020 @default.
- W2084889929 countsByYear W20848899292021 @default.
- W2084889929 countsByYear W20848899292023 @default.
- W2084889929 crossrefType "journal-article" @default.
- W2084889929 hasAuthorship W2084889929A5003839600 @default.
- W2084889929 hasAuthorship W2084889929A5035568161 @default.
- W2084889929 hasAuthorship W2084889929A5045676535 @default.
- W2084889929 hasAuthorship W2084889929A5068253217 @default.
- W2084889929 hasAuthorship W2084889929A5083845597 @default.
- W2084889929 hasConcept C113196181 @default.
- W2084889929 hasConcept C120665830 @default.
- W2084889929 hasConcept C121332964 @default.
- W2084889929 hasConcept C127413603 @default.
- W2084889929 hasConcept C144082473 @default.
- W2084889929 hasConcept C147789679 @default.
- W2084889929 hasConcept C161790260 @default.
- W2084889929 hasConcept C175708663 @default.
- W2084889929 hasConcept C178790620 @default.
- W2084889929 hasConcept C185592680 @default.
- W2084889929 hasConcept C191897082 @default.
- W2084889929 hasConcept C192562407 @default.
- W2084889929 hasConcept C2777402863 @default.
- W2084889929 hasConcept C2777581544 @default.
- W2084889929 hasConcept C2777889555 @default.
- W2084889929 hasConcept C39353612 @default.
- W2084889929 hasConcept C40003534 @default.
- W2084889929 hasConcept C42360764 @default.
- W2084889929 hasConcept C44280652 @default.
- W2084889929 hasConcept C504678139 @default.
- W2084889929 hasConcept C506065880 @default.
- W2084889929 hasConcept C65165184 @default.
- W2084889929 hasConcept C7082614 @default.
- W2084889929 hasConcept C97355855 @default.
- W2084889929 hasConceptScore W2084889929C113196181 @default.
- W2084889929 hasConceptScore W2084889929C120665830 @default.
- W2084889929 hasConceptScore W2084889929C121332964 @default.