Finite Size Effects in Submonolayer Catalysts Investigated by CO Electrosorption on Pt/Pd(100).
A combination of scanning tunneling microscopy, subtractively normalized interfacial Fourier transform infrared spectroscopy (SNIFTIRS), and density functional theory (DFT) is used to quantify the local strain in 2D Pt clusters on the 100 facet of Pd and its effect on CO chemisorption. Good agreemen...
| Publicado en: | Journal of the American Chemical Society Vol. 139; no. 39; pp. 13676 - 13680 |
|---|---|
| Autores principales: | , , , |
| Formato: | Artículo |
| Publicado: |
American Chemical Society
10/4/2017
|
| Materias: | |
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=hlh&AN=125518987&site=ehost-live header: @attributes: shortDbName: hlh uiTerm: 125518987 longDbName: Humanities International Complete uiTag: AN controlInfo: bkinfo: jinfo: jid: 00027863 ACS jtl: Journal of the American Chemical Society issn: 00027863 maglogo: N pubinfo: dt: 10/4/2017 vid: 139 iid: 39 pid: 997 pub: American Chemical Society artinfo: ui: 125518987 10.1021/jacs.7b08740 ppf: 13676 ppct: 4 formats: tig: atl: Finite Size Effects in Submonolayer Catalysts Investigated by CO Electrosorption on Pt/Pd(100). aug: au: Qiuyi Yuan Doan, Hieu A. Grabow, Lars C. Brankovic, Stanko R. affil: Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204, United States of America Department of Electrical and Computer Engineering, University of Houston, Houston, Texas 77204, United States of America su: Scanning tunneling microscopy Fourier transform infrared spectroscopy Density functional theory Monomolecular films Morphology sug: subj: Scanning tunneling microscopy Fourier transform infrared spectroscopy Density functional theory Monomolecular films Morphology ab: A combination of scanning tunneling microscopy, subtractively normalized interfacial Fourier transform infrared spectroscopy (SNIFTIRS), and density functional theory (DFT) is used to quantify the local strain in 2D Pt clusters on the 100 facet of Pd and its effect on CO chemisorption. Good agreement between SNIFTIRS experiments and DFT simulations provide strong evidence that, in the absence of coherent strain between Pt and Pd, finite size effects introduce local compressive strain, which alters the chemisorption properties of the surface. Though this effect has been widely neglected in prior studies, our results suggest that accurate control over cluster sizes in submonolayer catalyst systems can be an effective approach to fine-tune their catalytic properties. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y dt: @attributes: year: 2017 holdings: @attributes: islocal: N |
|---|