Direct visualization of independent Ta centers supported on 2D TiO2 nanosheets

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dc.check.date2020-10-29
dc.check.infoAccess to this article is restricted until 12 months after publication by request of the publisheren
dc.contributor.authorBo, Zhenyu
dc.contributor.authorThornburgh, Nicholas
dc.contributor.authorPeng, Lingxuan
dc.contributor.authorGutierrez Moreno, Jose Julio
dc.contributor.authorNolan, Michael
dc.contributor.authorMarks, Laurence D.
dc.contributor.authorNotestein, Justin M.
dc.contributor.funderU.S. Department of Energyen
dc.contributor.funderNorthwestern Universityen
dc.contributor.funderDow Chemical Companyen
dc.contributor.funderW. M. Keck Foundationen
dc.contributor.funderUniversity of Illinoisen
dc.contributor.funderEnvironmental Protection Agencyen
dc.contributor.funderNational Science Foundationen
dc.contributor.funderScience Foundation Irelanden
dc.date.accessioned2019-10-31T12:57:01Z
dc.date.available2019-10-31T12:57:01Z
dc.date.issued2019
dc.date.updated2019-10-31T12:29:00Z
dc.description.abstractHighly-dispersed, supported oxides are ubiquitous solid catalysts, but they can be challenging to characterize with atomic precision. Here it is shown that crystalline anatase TiO2 nanosheets (~5 nm thick) are ideal supports for imaging highly-dispersed active sites. Ta cations are deposited by several routes, and high-resolution high angle annular dark-field (HAADF) scanning transmission electron microscopy (STEM) is used to determine the location of Ta with respect to the TiO2 lattice and to quantify Ta-Ta distances. In the best case, it is shown that >80% of Ta atoms are isolated from one another, whereas other techniques are blind to this critical catalytic property or give only qualitative estimates. TiO2 nanosheets may prove to be a useful platform for other types of catalysis studies.en
dc.description.sponsorshipU.S. Department of Energy (Office of Science, Office of Basic Energy Science, under Award Number DOE DE-FG02-03ER15457 to the Institute for Catalysis for Energy Processes (ICEP) at Northwestern University); Northwestern University (Materials Research Center (MRSEC) on grant number DMR-112126; EPIC facility of the NUANCE Center at Northwestern University, which has received support from the Soft and Hybrid Nanotechnology Experimental (SHyNE) Resource (NSF NNCI-1542205); the MRSEC program (NSF DMR-112126) at the Materials Research Center; the International Institute for Nanotechnology (IIN); University of Illinois (JEOL JEM-ARM200CF in the Electron Microscopy Service [Research Resources Center, University of Illinois at Chicago (UIC)]); Irish Environmental Protection Agency (UisceSense project (W-2015-MS-21));en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationBo, Z., Thornburgh, N., Peng, L., Gutierrez Moreno, J. J., Nolan, M., Marks, L. D. and Notestein, J. M. (2019) 'Direct Visualization of Independent Ta Centers Supported on 2D TiO2 Nanosheets', Nano Letters, In Press, doi: 10.1021/acs.nanolett.9b03305en
dc.identifier.doi10.1021/acs.nanolett.9b03305en
dc.identifier.endpage15en
dc.identifier.issn1530-6984
dc.identifier.journaltitleNano Lettersen
dc.identifier.startpage1en
dc.identifier.urihttps://hdl.handle.net/10468/8928
dc.language.isoenen
dc.publisherAmerican Chemical Societyen
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI US Ireland R&D Partnership/14/US/E2915/IE/SusChEM: Using theory-driven design to tailor novel nanocomposite oxides for solar fuel production/en
dc.relation.projectinfo:eu-repo/grantAgreement/NSF//1542205/US/NNCI: Soft and Hybrid Nanotechnology Experimental (SHyNE) Resource/en
dc.relation.urihttps://pubs.acs.org/doi/10.1021/acs.nanolett.9b03305
dc.rights© 2019 American Chemical Society. This document is the Accepted Manuscript version of a Published Work that appears in final form in Nano Letters, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/10.1021/acs.nanolett.9b03305en
dc.subjectHAADF STEMen
dc.subjectSupported catalystsen
dc.subjectOxidesen
dc.subjectMicroscopyen
dc.subjectSingle atom catalystsen
dc.titleDirect visualization of independent Ta centers supported on 2D TiO2 nanosheetsen
dc.typeArticle (peer-reviewed)en
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