Atomic Resolution Imaging of Nanoscale Structural Ordering in a Complex Metal Oxide Catalyst

Handle URI:
http://hdl.handle.net/10754/575565
Title:
Atomic Resolution Imaging of Nanoscale Structural Ordering in a Complex Metal Oxide Catalyst
Authors:
Zhu, Yihan; Wang, Qingxiao; Zhao, Lan; Teng, Baiyang; Lu, Weimin; Han, Yu ( 0000-0003-1462-1118 )
Abstract:
The determination of the atomic structure of a functional material is crucial to understanding its "structure-to-property" relationship (e.g., the active sites in a catalyst), which is however challenging if the structure possesses complex inhomogeneities. Here, we report an atomic structure study of an important MoVTeO complex metal oxide catalyst that is potentially useful for the industrially relevant propane-based BP/SOHIO process. We combined aberration-corrected scanning transmission electron microscopy with synchrotron powder X-ray crystallography to explore the structure at both nanoscopic and macroscopic scales. At the nanoscopic scale, this material exhibits structural and compositional order within nanosized "domains", while the domains show disordered distribution at the macroscopic scale. We proposed that the intradomain compositional ordering and the interdomain electric dipolar interaction synergistically induce the displacement of Te atoms in the Mo-V-O channels, which determines the geometry of the multifunctional metal oxo-active sites.
KAUST Department:
Advanced Membranes and Porous Materials Research Center; Chemical Science Program; Physical Sciences and Engineering (PSE) Division; Chemical Science Program; Advanced Membranes and Porous Materials Research Center; Chemical Science Program; Nanostructured Functional Materials (NFM) laboratory; Core Labs; Core Labs
Publisher:
American Chemical Society (ACS)
Journal:
Chemistry of Materials
Issue Date:
28-Aug-2012
DOI:
10.1021/cm301828n
Type:
Article
ISSN:
0897-4756; 1520-5002
Sponsors:
This research was supported by baseline research funds from King Abdullah University of Science and Technology. We appreciate the support of Dr. Qinfen Gu from Australian Synchrotron research center for carrying out the powder X-ray diffraction experiments. We thank Prof. Guanglie Lv (National Science Park, Zhejiang, PR China) for useful discussions.
Appears in Collections:
Articles; Advanced Membranes and Porous Materials Research Center; Advanced Nanofabrication, Imaging and Characterization Core Lab; Physical Sciences and Engineering (PSE) Division; Chemical Science Program; Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorZhu, Yihanen
dc.contributor.authorWang, Qingxiaoen
dc.contributor.authorZhao, Lanen
dc.contributor.authorTeng, Baiyangen
dc.contributor.authorLu, Weiminen
dc.contributor.authorHan, Yuen
dc.date.accessioned2015-08-24T08:33:00Zen
dc.date.available2015-08-24T08:33:00Zen
dc.date.issued2012-08-28en
dc.identifier.issn0897-4756en
dc.identifier.issn1520-5002en
dc.identifier.doi10.1021/cm301828nen
dc.identifier.urihttp://hdl.handle.net/10754/575565en
dc.description.abstractThe determination of the atomic structure of a functional material is crucial to understanding its "structure-to-property" relationship (e.g., the active sites in a catalyst), which is however challenging if the structure possesses complex inhomogeneities. Here, we report an atomic structure study of an important MoVTeO complex metal oxide catalyst that is potentially useful for the industrially relevant propane-based BP/SOHIO process. We combined aberration-corrected scanning transmission electron microscopy with synchrotron powder X-ray crystallography to explore the structure at both nanoscopic and macroscopic scales. At the nanoscopic scale, this material exhibits structural and compositional order within nanosized "domains", while the domains show disordered distribution at the macroscopic scale. We proposed that the intradomain compositional ordering and the interdomain electric dipolar interaction synergistically induce the displacement of Te atoms in the Mo-V-O channels, which determines the geometry of the multifunctional metal oxo-active sites.en
dc.description.sponsorshipThis research was supported by baseline research funds from King Abdullah University of Science and Technology. We appreciate the support of Dr. Qinfen Gu from Australian Synchrotron research center for carrying out the powder X-ray diffraction experiments. We thank Prof. Guanglie Lv (National Science Park, Zhejiang, PR China) for useful discussions.en
dc.publisherAmerican Chemical Society (ACS)en
dc.titleAtomic Resolution Imaging of Nanoscale Structural Ordering in a Complex Metal Oxide Catalysten
dc.typeArticleen
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Centeren
dc.contributor.departmentChemical Science Programen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentChemical Science Programen
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Centeren
dc.contributor.departmentChemical Science Programen
dc.contributor.departmentNanostructured Functional Materials (NFM) laboratoryen
dc.contributor.departmentCore Labsen
dc.contributor.departmentCore Labsen
dc.identifier.journalChemistry of Materialsen
dc.contributor.institutionZhejiang Univ, Dept Chem, Inst Catalysis, Hangzhou 310028, Peoples R Chinaen
kaust.authorZhu, Yihanen
kaust.authorTeng, Baiyangen
kaust.authorHan, Yuen
kaust.authorWang, Qingxiaoen
kaust.authorZhao, Lanen
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