FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W4308483536> ?p ?o ?g. }

• W4308483536 endingPage "19146" @default.
• W4308483536 startingPage "19136" @default.
• W4308483536 abstract "Gas–solid interactions between molecular oxygen and metallic vanadium surfaces and the systematic evolution in the electronic structure of vanadium oxide (VOx) surfaces have been explored in the present work by near-ambient pressure photoelectron spectroscopy (NAPPES). The current article studies the evolution of various oxides of vanadium as a function of partial pressure of O2 (ultrahigh vacuum to 1 mbar), temperature (298–875 K), and the exposure time to oxygen (up to 18 h). Valence-band (VB) and core-level spectral measurements recorded with UV (He–I = 21.2 eV) and Al Kα (1486.6 eV) photons, respectively, show interesting changes. (1) Oxidation is limited to the top layers of vanadium at 298 K and up to a partial pressure of 1 mbar O2. About 50% of vanadium gets oxidized, and the remaining amount exists as metal within the top 10 nm. (2) Metallic vanadium disappears above 625 K, and it is predominantly oxidized to a mixture of V4+ and V5+ oxidation states at a 0.1 mbar partial pressure of O2. Points 1 and 2 suggest the predominantly thermodynamically controlled nature of vanadium oxidation through oxygen diffusion into the subsurface and bulk layers. (3) The Fermi-level (EF) feature observed first at ≥725 K at a 0.1 mbar O2 pressure demonstrates the formation of metallic VO2; however, its metallic nature is preserved even at ambient temperature due to interweaving nanodomains of VOx with VO2. (4) Only partial conversion of surface layers to V5+ (V2O5) along with VO2 and V2O3 (within the probing depth of 8–10 nm by near-ambient pressure X-ray photoelectron spectroscopy (NAP-XPS)) was observed even after prolonged heating (18 h) in 1 mbar O2 pressure. (5) The nature of the surface changes between metal and semiconducting/insulator oxides is substantiated by the observation of changes in work function (ϕ) and EF features. Typical VB features and Fermi intensity of V-metal and vanadium oxides were observed, and the results were corroborated with core-level and VB spectra. The present results extend the capabilities of NAPPES to explore the electronic structure evolution as a function of reaction conditions and underscore its relevance to areas such as heterogeneous catalysis and sensing." @default.
• W4308483536 created "2022-11-12" @default.
• W4308483536 creator A5001719442 @default.
• W4308483536 creator A5008865818 @default.
• W4308483536 creator A5030363496 @default.
• W4308483536 creator A5082353672 @default.
• W4308483536 date "2022-11-03" @default.
• W4308483536 modified "2023-10-01" @default.
• W4308483536 title "Electronic Structure Evolution from Metallic Vanadium to Metallic V_<i>x</i>O_<i>y</i>: A NAPPES Study for O₂ + V Gas–Solid Interaction" @default.
• W4308483536 cites W1973315818 @default.
• W4308483536 cites W1973463010 @default.
• W4308483536 cites W1989387746 @default.
• W4308483536 cites W1994741888 @default.
• W4308483536 cites W1999353473 @default.
• W4308483536 cites W2011217369 @default.
• W4308483536 cites W2015080424 @default.
• W4308483536 cites W2019650106 @default.
• W4308483536 cites W2024620885 @default.
• W4308483536 cites W2037087860 @default.
• W4308483536 cites W204686954 @default.
• W4308483536 cites W2048194821 @default.
• W4308483536 cites W2080777271 @default.
• W4308483536 cites W2088308510 @default.
• W4308483536 cites W2098547240 @default.
• W4308483536 cites W2117095666 @default.
• W4308483536 cites W2117617871 @default.
• W4308483536 cites W2136654521 @default.
• W4308483536 cites W2138536626 @default.
• W4308483536 cites W2170162238 @default.
• W4308483536 cites W2314688895 @default.
• W4308483536 cites W2319318358 @default.
• W4308483536 cites W2325935288 @default.
• W4308483536 cites W2330905521 @default.
• W4308483536 cites W2336588386 @default.
• W4308483536 cites W2469230531 @default.
• W4308483536 cites W2512131451 @default.
• W4308483536 cites W2747524394 @default.
• W4308483536 cites W2752114719 @default.
• W4308483536 cites W2788471508 @default.
• W4308483536 cites W2793028256 @default.
• W4308483536 cites W2884042457 @default.
• W4308483536 cites W2892133593 @default.
• W4308483536 cites W2894798394 @default.
• W4308483536 cites W2896747363 @default.
• W4308483536 cites W3035672758 @default.
• W4308483536 cites W3109595563 @default.
• W4308483536 cites W3124747598 @default.
• W4308483536 cites W3166170553 @default.
• W4308483536 cites W4221038676 @default.
• W4308483536 doi "https://doi.org/10.1021/acs.jpcc.2c05212" @default.
• W4308483536 hasPublicationYear "2022" @default.
• W4308483536 type Work @default.
• W4308483536 citedByCount "0" @default.
• W4308483536 crossrefType "journal-article" @default.
• W4308483536 hasAuthorship W4308483536A5001719442 @default.
• W4308483536 hasAuthorship W4308483536A5008865818 @default.
• W4308483536 hasAuthorship W4308483536A5030363496 @default.
• W4308483536 hasAuthorship W4308483536A5082353672 @default.
• W4308483536 hasConcept C121332964 @default.
• W4308483536 hasConcept C147789679 @default.
• W4308483536 hasConcept C184779094 @default.
• W4308483536 hasConcept C185592680 @default.
• W4308483536 hasConcept C191897082 @default.
• W4308483536 hasConcept C192562407 @default.
• W4308483536 hasConcept C26873012 @default.
• W4308483536 hasConcept C504678139 @default.
• W4308483536 hasConcept C544153396 @default.
• W4308483536 hasConcept C8010536 @default.
• W4308483536 hasConcept C86025842 @default.
• W4308483536 hasConceptScore W4308483536C121332964 @default.
• W4308483536 hasConceptScore W4308483536C147789679 @default.
• W4308483536 hasConceptScore W4308483536C184779094 @default.
• W4308483536 hasConceptScore W4308483536C185592680 @default.
• W4308483536 hasConceptScore W4308483536C191897082 @default.
• W4308483536 hasConceptScore W4308483536C192562407 @default.
• W4308483536 hasConceptScore W4308483536C26873012 @default.
• W4308483536 hasConceptScore W4308483536C504678139 @default.
• W4308483536 hasConceptScore W4308483536C544153396 @default.
• W4308483536 hasConceptScore W4308483536C8010536 @default.
• W4308483536 hasConceptScore W4308483536C86025842 @default.
• W4308483536 hasFunder F4320320719 @default.
• W4308483536 hasFunder F4320320767 @default.
• W4308483536 hasIssue "45" @default.
• W4308483536 hasLocation W43084835361 @default.
• W4308483536 hasOpenAccess W4308483536 @default.
• W4308483536 hasPrimaryLocation W43084835361 @default.
• W4308483536 hasRelatedWork W1971893904 @default.
• W4308483536 hasRelatedWork W1985437563 @default.
• W4308483536 hasRelatedWork W2003906622 @default.
• W4308483536 hasRelatedWork W2030766063 @default.
• W4308483536 hasRelatedWork W2336718881 @default.
• W4308483536 hasRelatedWork W2405036244 @default.
• W4308483536 hasRelatedWork W2899084033 @default.
• W4308483536 hasRelatedWork W2945157767 @default.
• W4308483536 hasRelatedWork W2951183257 @default.
• W4308483536 hasRelatedWork W4255871927 @default.
• W4308483536 hasVolume "126" @default.
• W4308483536 isParatext "false" @default.

• next