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Article: Hydrothermally synthesized CuxO as a catalyst for CO oxidation

TitleHydrothermally synthesized CuxO as a catalyst for CO oxidation
Authors
Issue Date2015
PublisherRSC Publications. The Journal's web site is located at http://pubs.rsc.org/en/journals/journalissues/ta#!recentarticles&all
Citation
Journal of Materials Chemistry A, 2015, v. 3 n. 7, p. 3627-3632 How to Cite?
AbstractHydrothermally synthesized CuxO exhibited improved performance for CO oxidation compared to the hydrothermally synthesized Cu2O, as well as commercial CuO nanoparticles. Hydrothermally synthesized CuxO predominantly consists of CuO, but it also contains a small contribution from Cu2O, as well as Cu2(OH)3(NO3) (before annealing). After annealing, only CuO and Cu2O phases are present, and the T50 value is significantly improved from 179 °C to 149 °C, and the T50 value of annealed hydrothermal CuxO remains practically unchanged for 3 catalytic cycles. The improved performance of hydrothermal CuxO can be attributed to its composition and surface properties. The ratio of lattice oxygen to surface oxygen (oxygen in surface adsorbates, surface states, and defects) increases after the first CO oxidation reaction for all samples except commercial CuO nanoparticles, which exhibit steady decrease with increased cycling. In addition, pure Cu2O irreversibly changes to CuO after CO oxidation reaction, but its catalytic performance after the first cycle is significantly improved compared to commercial CuO nanoparticles. © The Royal Society of Chemistry 2015.
Persistent Identifierhttp://hdl.handle.net/10722/208701
ISSN
2015 Impact Factor: 8.262
2015 SCImago Journal Rankings: 2.770

 

DC FieldValueLanguage
dc.contributor.authorGUO, M-
dc.contributor.authorLIU, F-
dc.contributor.authorTsui, J-
dc.contributor.authorVoskanyan, A-
dc.contributor.authorNg, AMC-
dc.contributor.authorDjurisic, A-
dc.contributor.authorChan, GKY-
dc.contributor.authorChan, KY-
dc.contributor.authorLiao, CZ-
dc.contributor.authorShih, KS-
dc.contributor.authorSurya, C-
dc.date.accessioned2015-03-18T09:05:59Z-
dc.date.available2015-03-18T09:05:59Z-
dc.date.issued2015-
dc.identifier.citationJournal of Materials Chemistry A, 2015, v. 3 n. 7, p. 3627-3632-
dc.identifier.issn2050-7488-
dc.identifier.urihttp://hdl.handle.net/10722/208701-
dc.description.abstractHydrothermally synthesized CuxO exhibited improved performance for CO oxidation compared to the hydrothermally synthesized Cu2O, as well as commercial CuO nanoparticles. Hydrothermally synthesized CuxO predominantly consists of CuO, but it also contains a small contribution from Cu2O, as well as Cu2(OH)3(NO3) (before annealing). After annealing, only CuO and Cu2O phases are present, and the T50 value is significantly improved from 179 °C to 149 °C, and the T50 value of annealed hydrothermal CuxO remains practically unchanged for 3 catalytic cycles. The improved performance of hydrothermal CuxO can be attributed to its composition and surface properties. The ratio of lattice oxygen to surface oxygen (oxygen in surface adsorbates, surface states, and defects) increases after the first CO oxidation reaction for all samples except commercial CuO nanoparticles, which exhibit steady decrease with increased cycling. In addition, pure Cu2O irreversibly changes to CuO after CO oxidation reaction, but its catalytic performance after the first cycle is significantly improved compared to commercial CuO nanoparticles. © The Royal Society of Chemistry 2015.-
dc.languageeng-
dc.publisherRSC Publications. The Journal's web site is located at http://pubs.rsc.org/en/journals/journalissues/ta#!recentarticles&all-
dc.relation.ispartofJournal of Materials Chemistry A-
dc.titleHydrothermally synthesized CuxO as a catalyst for CO oxidation-
dc.typeArticle-
dc.identifier.emailNg, AMC: alanalfa@hku.hk-
dc.identifier.emailDjurisic, A: dalek@hku.hk-
dc.identifier.emailChan, GKY: hrsccky@hku.hk-
dc.identifier.authorityDjurisic, A=rp00690-
dc.identifier.authorityChan, GKY=rp00662-
dc.identifier.doi10.1039/C4TA06804A-
dc.identifier.scopuseid_2-s2.0-84922713151-
dc.identifier.hkuros242591-
dc.identifier.volume3-
dc.identifier.issue7-
dc.identifier.spage3627-
dc.identifier.epage3632-
dc.publisher.placeUnited Kingdom-

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