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

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dc.contributor.author Bo, Zhenyu
dc.contributor.author Thornburgh, Nicholas
dc.contributor.author Peng, Lingxuan
dc.contributor.author Gutierrez Moreno, Jose Julio
dc.contributor.author Nolan, Michael
dc.contributor.author Marks, Laurence D.
dc.contributor.author Notestein, Justin M.
dc.date.accessioned 2019-10-31T12:57:01Z
dc.date.available 2019-10-31T12:57:01Z
dc.date.issued 2019
dc.identifier.citation Bo, 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.9b03305 en
dc.identifier.startpage 1 en
dc.identifier.endpage 15 en
dc.identifier.issn 1530-6984
dc.identifier.uri http://hdl.handle.net/10468/8928
dc.identifier.doi 10.1021/acs.nanolett.9b03305 en
dc.description.abstract Highly-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.sponsorship U.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.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher American Chemical Society en
dc.relation.uri https://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.9b03305 en
dc.subject HAADF STEM en
dc.subject Supported catalysts en
dc.subject Oxides en
dc.subject Microscopy en
dc.subject Single atom catalysts en
dc.title Direct visualization of independent Ta centers supported on 2D TiO2 nanosheets en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Michael Nolan, Tyndall Theory Modelling & Design Centre, University College Cork, Cork, Ireland. +353-21-490-3000 Email: michael.nolan@tyndall.ie en
dc.internal.availability Full text available en
dc.check.info Access to this article is restricted until 12 months after publication by request of the publisher en
dc.check.date 2020-10-29
dc.date.updated 2019-10-31T12:29:00Z
dc.description.version Accepted Version en
dc.internal.rssid 499910001
dc.contributor.funder U.S. Department of Energy en
dc.contributor.funder Northwestern University en
dc.contributor.funder Dow Chemical Company en
dc.contributor.funder W. M. Keck Foundation en
dc.contributor.funder University of Illinois en
dc.contributor.funder Environmental Protection Agency en
dc.contributor.funder National Science Foundation en
dc.contributor.funder Science Foundation Ireland en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Nano Letters en
dc.internal.copyrightchecked No
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress michael.nolan@tyndall.ie en
dc.internal.bibliocheck In press. Check vol / issue / page range. Amend citation as necessary.
dc.relation.project info: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.project info:eu-repo/grantAgreement/NSF//1542205/US/NNCI: Soft and Hybrid Nanotechnology Experimental (SHyNE) Resource/ en


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