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Article: Splitting water on metal oxide surfaces

TitleSplitting water on metal oxide surfaces
Authors
Issue Date2011
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journals/jpccck/
Citation
Journal Of Physical Chemistry C, 2011, v. 115 n. 40, p. 19710-19715 How to Cite?
AbstractWe have identified a class of metal oxide surfaces that are very effective in dissociating water. These oxide surfaces are characterized by having their surface O 2p level lying significantly above the valence band maximum (VBM) and within the band gap. Density functional theory is used to determine the adsorption energy per water molecule and finds that water dissociates completely at all coverages on these surfaces. Fourier transform infrared (FTIR) spectroscopy is used to verify that there is little or no molecular water present on the surface. Besides splitting water, this class of metal oxide surfaces should also be effective in splitting other kinds of hydrogen compounds. By contrast, oxides whose surface O 2p level lies buried inside the valence band are much less reactive, and water adsorbs on these surfaces in molecular form. © 2011 American Chemical Society.
Persistent Identifierhttp://hdl.handle.net/10722/159419
ISSN
2014 Impact Factor: 4.772
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorXu, Hen_HK
dc.contributor.authorZhang, RQen_HK
dc.contributor.authorNg, AMCen_HK
dc.contributor.authorDjurišić, ABen_HK
dc.contributor.authorChan, HTen_HK
dc.contributor.authorChan, WKen_HK
dc.contributor.authorTong, SYen_HK
dc.date.accessioned2012-08-16T05:49:12Z-
dc.date.available2012-08-16T05:49:12Z-
dc.date.issued2011en_HK
dc.identifier.citationJournal Of Physical Chemistry C, 2011, v. 115 n. 40, p. 19710-19715en_HK
dc.identifier.issn1932-7447en_HK
dc.identifier.urihttp://hdl.handle.net/10722/159419-
dc.description.abstractWe have identified a class of metal oxide surfaces that are very effective in dissociating water. These oxide surfaces are characterized by having their surface O 2p level lying significantly above the valence band maximum (VBM) and within the band gap. Density functional theory is used to determine the adsorption energy per water molecule and finds that water dissociates completely at all coverages on these surfaces. Fourier transform infrared (FTIR) spectroscopy is used to verify that there is little or no molecular water present on the surface. Besides splitting water, this class of metal oxide surfaces should also be effective in splitting other kinds of hydrogen compounds. By contrast, oxides whose surface O 2p level lies buried inside the valence band are much less reactive, and water adsorbs on these surfaces in molecular form. © 2011 American Chemical Society.en_HK
dc.languageengen_US
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journals/jpccck/en_HK
dc.relation.ispartofJournal of Physical Chemistry Cen_HK
dc.titleSplitting water on metal oxide surfacesen_HK
dc.typeArticleen_HK
dc.identifier.emailDjurišić, AB: dalek@hku.hken_HK
dc.identifier.emailChan, WK: waichan@hku.hken_HK
dc.identifier.authorityDjurišić, AB=rp00690en_HK
dc.identifier.authorityChan, WK=rp00667en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/jp2032884en_HK
dc.identifier.scopuseid_2-s2.0-80053917896en_HK
dc.identifier.hkuros205711en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-80053917896&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume115en_HK
dc.identifier.issue40en_HK
dc.identifier.spage19710en_HK
dc.identifier.epage19715en_HK
dc.identifier.isiWOS:000295546100033-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridXu, H=36160491400en_HK
dc.identifier.scopusauthoridZhang, RQ=7404864320en_HK
dc.identifier.scopusauthoridNg, AMC=12140078600en_HK
dc.identifier.scopusauthoridDjurišić, AB=7004904830en_HK
dc.identifier.scopusauthoridChan, HT=7403402352en_HK
dc.identifier.scopusauthoridChan, WK=13310083000en_HK
dc.identifier.scopusauthoridTong, SY=24512624800en_HK
dc.identifier.citeulike9860311-

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