Tailoring Ruthenium Exposure to Enhance the Performance of fcc Platinum@Ruthenium Core-Shell Electrocatalysts in the Oxygen Evolution Reaction

Handle URI:
http://hdl.handle.net/10754/611215
Title:
Tailoring Ruthenium Exposure to Enhance the Performance of fcc Platinum@Ruthenium Core-Shell Electrocatalysts in the Oxygen Evolution Reaction
Authors:
AlYami, Noktan Mohammed; Lagrow, Alec; Joya, khurram; Hwang, Jinyeon; Katsiev, Khabiboulakh; Anjum, Dalaver H.; Losovyj, Yaroslav; Sinatra, Lutfan ( 0000-0001-7034-7745 ) ; Kim, Jin Young; Bakr, Osman M. ( 0000-0002-3428-1002 )
Abstract:
The catalytic properties of noble metal nanocrystals are a function of their size, structure, and surface composition. In particular, achieving high activity without sacrificing stability is essential for designing commercially viable catalysts. A major challenge in designing state-of-the-art Ru-based catalysts for the oxygen evolution reaction (OER), which is a key step in water splitting, is the poor stability and surface tailorability of these catalysts. In this study, we designed rapidly synthesizable size-controlled, morphology-selective, and surface-tailored platinum-ruthenium core-shell (Pt@Ru) and alloy (PtRu) nanocatalysts in a scalable continuous-flow reactor. These core-shell nanoparticles with atomically precise shells were produced in a single synthetic step with carbon monoxide as the reducing agent. By varying the metal precursor concentration, a dendritic or layer-by-layer ruthenium shell can be grown. The catalytic activities of the synthesized Pt@Ru and PtRu nanoparticles exhibit noticeably higher electrocatalytic activity in the OER compared to that of pure Pt and Ru nanoparticles. Promisingly, Pt@Ru nanocrystals with a ~2-3 atomic layer Ru cuboctahedral shell surpass conventional Ru nanoparticles in terms of both durability and activity.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Solar and Photovoltaic Engineering Research Center (SPERC); Imaging and Characterization Core Lab
Citation:
Tailoring Ruthenium Exposure to Enhance the Performance of fcc Platinum@Ruthenium Core-Shell Electrocatalysts in the Oxygen Evolution Reaction 2016 Phys. Chem. Chem. Phys.
Publisher:
Royal Society of Chemistry (RSC)
Journal:
Phys. Chem. Chem. Phys.
Issue Date:
17-May-2016
DOI:
10.1039/C6CP01401A
Type:
Article
ISSN:
1463-9076; 1463-9084
Sponsors:
Author Contributions: All of the authors approved the final version of the manuscript. N.M.A. designed the synthetic procedure. N.M.A. performed the TEM and XRD. N.M.A., A.P.L. and D.H.A. conducted the STEM and STEM-EDS mapping. Y.L. and Kh.K. performed XPS. N.M.A. and A.P.L. hypothesized the growth mechanism. N.M.A., K.S.J., J.H., L.S. and J.Y.K. executed the electrochemical measurements and analysis. N.M.A. wrote the manuscript and carried out the analyses. All authors contributed to the discussion and interpretation of the results. We thank Prof. Kazuhiro Takanabe for the use of his lab to conduct the electrochemical experiments. Access to XPS at the Nanoscale Characterization Facility at IU-B Chemistry was provided by NSF Award DMR MRI-1126394.
Additional Links:
http://pubs.rsc.org/en/Content/ArticleLanding/2016/CP/C6CP01401A
Appears in Collections:
Articles; Advanced Nanofabrication, Imaging and Characterization Core Lab; Physical Sciences and Engineering (PSE) Division; Solar and Photovoltaic Engineering Research Center (SPERC)

Full metadata record

DC FieldValue Language
dc.contributor.authorAlYami, Noktan Mohammeden
dc.contributor.authorLagrow, Alecen
dc.contributor.authorJoya, khurramen
dc.contributor.authorHwang, Jinyeonen
dc.contributor.authorKatsiev, Khabiboulakhen
dc.contributor.authorAnjum, Dalaver H.en
dc.contributor.authorLosovyj, Yaroslaven
dc.contributor.authorSinatra, Lutfanen
dc.contributor.authorKim, Jin Youngen
dc.contributor.authorBakr, Osman M.en
dc.date.accessioned2016-05-30T13:35:16Z-
dc.date.available2016-05-30T13:35:16Z-
dc.date.issued2016-05-17-
dc.identifier.citationTailoring Ruthenium Exposure to Enhance the Performance of fcc Platinum@Ruthenium Core-Shell Electrocatalysts in the Oxygen Evolution Reaction 2016 Phys. Chem. Chem. Phys.en
dc.identifier.issn1463-9076-
dc.identifier.issn1463-9084-
dc.identifier.doi10.1039/C6CP01401A-
dc.identifier.urihttp://hdl.handle.net/10754/611215-
dc.description.abstractThe catalytic properties of noble metal nanocrystals are a function of their size, structure, and surface composition. In particular, achieving high activity without sacrificing stability is essential for designing commercially viable catalysts. A major challenge in designing state-of-the-art Ru-based catalysts for the oxygen evolution reaction (OER), which is a key step in water splitting, is the poor stability and surface tailorability of these catalysts. In this study, we designed rapidly synthesizable size-controlled, morphology-selective, and surface-tailored platinum-ruthenium core-shell (Pt@Ru) and alloy (PtRu) nanocatalysts in a scalable continuous-flow reactor. These core-shell nanoparticles with atomically precise shells were produced in a single synthetic step with carbon monoxide as the reducing agent. By varying the metal precursor concentration, a dendritic or layer-by-layer ruthenium shell can be grown. The catalytic activities of the synthesized Pt@Ru and PtRu nanoparticles exhibit noticeably higher electrocatalytic activity in the OER compared to that of pure Pt and Ru nanoparticles. Promisingly, Pt@Ru nanocrystals with a ~2-3 atomic layer Ru cuboctahedral shell surpass conventional Ru nanoparticles in terms of both durability and activity.en
dc.description.sponsorshipAuthor Contributions: All of the authors approved the final version of the manuscript. N.M.A. designed the synthetic procedure. N.M.A. performed the TEM and XRD. N.M.A., A.P.L. and D.H.A. conducted the STEM and STEM-EDS mapping. Y.L. and Kh.K. performed XPS. N.M.A. and A.P.L. hypothesized the growth mechanism. N.M.A., K.S.J., J.H., L.S. and J.Y.K. executed the electrochemical measurements and analysis. N.M.A. wrote the manuscript and carried out the analyses. All authors contributed to the discussion and interpretation of the results. We thank Prof. Kazuhiro Takanabe for the use of his lab to conduct the electrochemical experiments. Access to XPS at the Nanoscale Characterization Facility at IU-B Chemistry was provided by NSF Award DMR MRI-1126394.en
dc.language.isoenen
dc.publisherRoyal Society of Chemistry (RSC)en
dc.relation.urlhttp://pubs.rsc.org/en/Content/ArticleLanding/2016/CP/C6CP01401Aen
dc.rightsArchived with thanks to Phys. Chem. Chem. Phys.en
dc.titleTailoring Ruthenium Exposure to Enhance the Performance of fcc Platinum@Ruthenium Core-Shell Electrocatalysts in the Oxygen Evolution Reactionen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentSolar and Photovoltaic Engineering Research Center (SPERC)en
dc.contributor.departmentImaging and Characterization Core Laben
dc.identifier.journalPhys. Chem. Chem. Phys.en
dc.eprint.versionPost-printen
dc.contributor.institutionJEOL Nanocenter and Department of Physics, University of York, Heslington, York YO10 5DD, United Kingdomen
dc.contributor.institutionLeiden Institute of Chemistry, Leiden University, Einsteinweg 55, P.O. Box 9502, 2300 RA, Leiden, The Netherlandsen
dc.contributor.institutionDepartment of Chemistry, University of Engineering and Technology (UET), GT Road, 54890 Lahore, Pakistanen
dc.contributor.institutionFuel Cell Research Center, KIST, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 136-791, Republic of Koreaen
dc.contributor.institutionSABIC Corporate Research and Development Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabiaen
dc.contributor.institutionDepartment of Chemistry, Indiana University, Bloomington, IN 47405, USAen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorAlYami, Noktan Mohammeden
kaust.authorLagrow, Alecen
kaust.authorAnjum, Dalaver H.en
kaust.authorSinatra, Lutfanen
kaust.authorBakr, Osman M.en
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