Matches in SemOpenAlex for { <https://semopenalex.org/work/W2084817818> ?p ?o ?g. }
Showing items 1 to 42 of
42
with 100 items per page.
- W2084817818 endingPage "17" @default.
- W2084817818 startingPage "17" @default.
- W2084817818 abstract "SURFACE SCIENCEOne of the problems that can plague fuel cells is poisoning by CO adsorption; one solution is to alloy platinum (Pt) with other metals, such as ruthenium or tin (Sn), that can more readily react with water, binding a hydroxyl group while liberating a proton and an electron. This hydroxyl group can then react with CO molecules on Pt atoms, liberating CO2 and another proton and electron. In order to understand these processes better, several groups have been studying model single-crystal catalysts as summarized by Koper. In particular, Gallagher et al . have examined changes in a Pt3Sn(111) surface immersed in a sulfuric acid electrolyte with in situ surface x-ray scattering, which can resolve small changes in structure. At low applied potentials (0.05 V), the entire surface layer undergoes a expansion of about 2%, but at 0.55 V, the Pt atoms in the outermost layer contract inward to an expansion of only 0.6%, whereas the Sn atoms expand outward by 6%. This buckling of the surface is also observed under CO saturation at 0.55 V and appears to be a precursor to Sn desorption that occurs at 1.0 V. The ability to observe such changes bodes well for more detailed studies of these reactions. — PDS Surf. Sci . 10.1016/j.susc.2003.10.045 (2003); Surf. Sci . 544 , L729 (2003)." @default.
- W2084817818 created "2016-06-24" @default.
- W2084817818 date "2004-01-02" @default.
- W2084817818 modified "2023-09-26" @default.
- W2084817818 title "Changes in Bimetallic Catalysts" @default.
- W2084817818 doi "https://doi.org/10.1126/science.303.5654.17b" @default.
- W2084817818 hasPublicationYear "2004" @default.
- W2084817818 type Work @default.
- W2084817818 sameAs 2084817818 @default.
- W2084817818 citedByCount "0" @default.
- W2084817818 crossrefType "journal-article" @default.
- W2084817818 hasConcept C161790260 @default.
- W2084817818 hasConcept C178790620 @default.
- W2084817818 hasConcept C185592680 @default.
- W2084817818 hasConcept C39432304 @default.
- W2084817818 hasConcept C43411465 @default.
- W2084817818 hasConceptScore W2084817818C161790260 @default.
- W2084817818 hasConceptScore W2084817818C178790620 @default.
- W2084817818 hasConceptScore W2084817818C185592680 @default.
- W2084817818 hasConceptScore W2084817818C39432304 @default.
- W2084817818 hasConceptScore W2084817818C43411465 @default.
- W2084817818 hasIssue "5654" @default.
- W2084817818 hasLocation W20848178181 @default.
- W2084817818 hasOpenAccess W2084817818 @default.
- W2084817818 hasPrimaryLocation W20848178181 @default.
- W2084817818 hasRelatedWork W1973045750 @default.
- W2084817818 hasRelatedWork W1974925147 @default.
- W2084817818 hasRelatedWork W2041840250 @default.
- W2084817818 hasRelatedWork W2052260805 @default.
- W2084817818 hasRelatedWork W2084409320 @default.
- W2084817818 hasRelatedWork W2796389189 @default.
- W2084817818 hasRelatedWork W2899084033 @default.
- W2084817818 hasRelatedWork W3197351755 @default.
- W2084817818 hasRelatedWork W4295921565 @default.
- W2084817818 hasRelatedWork W969945399 @default.
- W2084817818 hasVolume "303" @default.
- W2084817818 isParatext "false" @default.
- W2084817818 isRetracted "false" @default.
- W2084817818 magId "2084817818" @default.
- W2084817818 workType "article" @default.