Surface composition of silver nanocubes and their influence on morphological stabilization and catalytic performance in ethylene epoxidation

Handle URI:
http://hdl.handle.net/10754/583401
Title:
Surface composition of silver nanocubes and their influence on morphological stabilization and catalytic performance in ethylene epoxidation
Authors:
Sangaru, Shiv ( 0000-0002-3506-8238 ) ; Zhu, Haibo; Rosenfeld, Devon C.; Samal, Akshaya Kumar ( 0000-0002-7623-3711 ) ; Anjum, Dalaver H.; Basset, Jean-Marie ( 0000-0003-3166-8882 )
Abstract:
Silver nanocubes with exposed (100) facets are reported to have improved selectivity with respect to their spherical counterparts for ethylene epoxidation. In the present study, we observe that the surface composition of the silver nanocubes have also a critical impact on activity. Detailed investigation of the surface composition of silver nanocubes has been carried out using HRTEM, SEM, EDS, EELS and EFTEM. Surfaces of silver nanocubes are “passivated” by chloride and its removal is essential to achieve any catalytic activity. However, the surface chloride is apparently essential for stabilizing the cubic morphology of the particles. Attempts were made to understand the competing effects of the surface species for retaining the morphology of the nanocubes and on their catalytic activity.
KAUST Department:
KAUST Catalysis Center (KCC); Imaging and Characterization Core Lab
Citation:
Surface composition of silver nanocubes and their influence on morphological stabilization and catalytic performance in ethylene epoxidation 2015 ACS Applied Materials & Interfaces
Publisher:
American Chemical Society (ACS)
Journal:
ACS Applied Materials & Interfaces
Issue Date:
4-Dec-2015
DOI:
10.1021/acsami.5b09927
Type:
Article
ISSN:
1944-8244; 1944-8252
Additional Links:
http://pubs.acs.org/doi/10.1021/acsami.5b09927
Appears in Collections:
Articles; Advanced Nanofabrication, Imaging and Characterization Core Lab; KAUST Catalysis Center (KCC)

Full metadata record

DC FieldValue Language
dc.contributor.authorSangaru, Shiven
dc.contributor.authorZhu, Haiboen
dc.contributor.authorRosenfeld, Devon C.en
dc.contributor.authorSamal, Akshaya Kumaren
dc.contributor.authorAnjum, Dalaver H.en
dc.contributor.authorBasset, Jean-Marieen
dc.date.accessioned2015-12-08T12:42:14Zen
dc.date.available2015-12-08T12:42:14Zen
dc.date.issued2015-12-04en
dc.identifier.citationSurface composition of silver nanocubes and their influence on morphological stabilization and catalytic performance in ethylene epoxidation 2015 ACS Applied Materials & Interfacesen
dc.identifier.issn1944-8244en
dc.identifier.issn1944-8252en
dc.identifier.doi10.1021/acsami.5b09927en
dc.identifier.urihttp://hdl.handle.net/10754/583401en
dc.description.abstractSilver nanocubes with exposed (100) facets are reported to have improved selectivity with respect to their spherical counterparts for ethylene epoxidation. In the present study, we observe that the surface composition of the silver nanocubes have also a critical impact on activity. Detailed investigation of the surface composition of silver nanocubes has been carried out using HRTEM, SEM, EDS, EELS and EFTEM. Surfaces of silver nanocubes are “passivated” by chloride and its removal is essential to achieve any catalytic activity. However, the surface chloride is apparently essential for stabilizing the cubic morphology of the particles. Attempts were made to understand the competing effects of the surface species for retaining the morphology of the nanocubes and on their catalytic activity.en
dc.language.isoenen
dc.publisherAmerican Chemical Society (ACS)en
dc.relation.urlhttp://pubs.acs.org/doi/10.1021/acsami.5b09927en
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Materials & Interfaces, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://pubs.acs.org/doi/10.1021/acsami.5b09927.en
dc.subjectSilver nanocubesen
dc.subjectPolyol methoden
dc.subjectCatalysisen
dc.subjectEthylene epoxidationen
dc.titleSurface composition of silver nanocubes and their influence on morphological stabilization and catalytic performance in ethylene epoxidationen
dc.typeArticleen
dc.contributor.departmentKAUST Catalysis Center (KCC)en
dc.contributor.departmentImaging and Characterization Core Laben
dc.identifier.journalACS Applied Materials & Interfacesen
dc.eprint.versionPost-printen
dc.contributor.institutionThe Dow Chemical Company, 2301 N. Brazosport Blvd., Freeport, TX 77541, USAen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorSangaru, Shiven
kaust.authorZhu, Haiboen
kaust.authorSamal, Akshaya Kumaren
kaust.authorAnjum, Dalaver H.en
kaust.authorBasset, Jean-Marieen
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