Publication

Effects of Adsorbate Coverage and Bond-Length Disorder on the d-Band Center of Carbon-Supported Pt Catalysts

Small, M. W., Kas, J. J., Kvashnina, K. O., Rehr, J. J., Nuzzo, R. G., Tromp, M. & Frenkel, A. I., 6-Jun-2014, In : Chemphyschem. 15, 8, p. 1569-1572 4 p.

Research output: Contribution to journalArticleAcademicpeer-review

APA

Small, M. W., Kas, J. J., Kvashnina, K. O., Rehr, J. J., Nuzzo, R. G., Tromp, M., & Frenkel, A. I. (2014). Effects of Adsorbate Coverage and Bond-Length Disorder on the d-Band Center of Carbon-Supported Pt Catalysts. Chemphyschem, 15(8), 1569-1572. https://doi.org/10.1002/cphc.201400055

Author

Small, Matthew W. ; Kas, Joshua J. ; Kvashnina, Kristina O. ; Rehr, John J. ; Nuzzo, Ralph G. ; Tromp, Moniek ; Frenkel, Anatoly I. / Effects of Adsorbate Coverage and Bond-Length Disorder on the d-Band Center of Carbon-Supported Pt Catalysts. In: Chemphyschem. 2014 ; Vol. 15, No. 8. pp. 1569-1572.

Harvard

Small, MW, Kas, JJ, Kvashnina, KO, Rehr, JJ, Nuzzo, RG, Tromp, M & Frenkel, AI 2014, 'Effects of Adsorbate Coverage and Bond-Length Disorder on the d-Band Center of Carbon-Supported Pt Catalysts', Chemphyschem, vol. 15, no. 8, pp. 1569-1572. https://doi.org/10.1002/cphc.201400055

Standard

Effects of Adsorbate Coverage and Bond-Length Disorder on the d-Band Center of Carbon-Supported Pt Catalysts. / Small, Matthew W.; Kas, Joshua J.; Kvashnina, Kristina O.; Rehr, John J.; Nuzzo, Ralph G.; Tromp, Moniek; Frenkel, Anatoly I.

In: Chemphyschem, Vol. 15, No. 8, 06.06.2014, p. 1569-1572.

Research output: Contribution to journalArticleAcademicpeer-review

Vancouver

Small MW, Kas JJ, Kvashnina KO, Rehr JJ, Nuzzo RG, Tromp M et al. Effects of Adsorbate Coverage and Bond-Length Disorder on the d-Band Center of Carbon-Supported Pt Catalysts. Chemphyschem. 2014 Jun 6;15(8):1569-1572. https://doi.org/10.1002/cphc.201400055


BibTeX

@article{77f600d1c8f84eb0b25833fc233b8953,
title = "Effects of Adsorbate Coverage and Bond-Length Disorder on the d-Band Center of Carbon-Supported Pt Catalysts",
abstract = "Determination of the factors that affect the d-band center of catalysts is required to explain their catalytic properties. Resonant inelastic X-ray scattering (RIXS) enables direct imaging of electronic transitions in the d-band of Pt catalysts in real time and in realistic environmental conditions. Through a combination of in situ, temperature-resolved RIXS measurements and theoretical simulations we isolated and quantified the effects of bond-length disorder and adsorbate coverage (CO and H-2) on the d-band center of 1.25 nm size Pt catalysts supported on carbon. We found that the decrease in adsorbate coverage at elevated temperatures is responsible for the d band shifts towards higher energies relative to the Fermi level, whereas the effect of the increase in bond-length disorder on the d-band center is negligible. Although these results were obtained for a specific case of non-interacting support and weak temperature dependence of the metal-metal bond length in a model catalyst, this work can be extended to a broad range of real catalysts.",
keywords = "catalysis, nanoparticles, platinum, resonant inelastic X-ray scattering, X-ray absorption spectroscopy, METAL-SURFACES, ELECTRONIC-STRUCTURE, OXYGEN REDUCTION, CO, REACTIVITY, ADSORPTION, STRAIN, EXAFS",
author = "Small, {Matthew W.} and Kas, {Joshua J.} and Kvashnina, {Kristina O.} and Rehr, {John J.} and Nuzzo, {Ralph G.} and Moniek Tromp and Frenkel, {Anatoly I.}",
year = "2014",
month = "6",
day = "6",
doi = "10.1002/cphc.201400055",
language = "English",
volume = "15",
pages = "1569--1572",
journal = "Chemphyschem",
issn = "1439-4235",
publisher = "WILEY-V C H VERLAG GMBH",
number = "8",

}

RIS

TY - JOUR

T1 - Effects of Adsorbate Coverage and Bond-Length Disorder on the d-Band Center of Carbon-Supported Pt Catalysts

AU - Small, Matthew W.

AU - Kas, Joshua J.

AU - Kvashnina, Kristina O.

AU - Rehr, John J.

AU - Nuzzo, Ralph G.

AU - Tromp, Moniek

AU - Frenkel, Anatoly I.

PY - 2014/6/6

Y1 - 2014/6/6

N2 - Determination of the factors that affect the d-band center of catalysts is required to explain their catalytic properties. Resonant inelastic X-ray scattering (RIXS) enables direct imaging of electronic transitions in the d-band of Pt catalysts in real time and in realistic environmental conditions. Through a combination of in situ, temperature-resolved RIXS measurements and theoretical simulations we isolated and quantified the effects of bond-length disorder and adsorbate coverage (CO and H-2) on the d-band center of 1.25 nm size Pt catalysts supported on carbon. We found that the decrease in adsorbate coverage at elevated temperatures is responsible for the d band shifts towards higher energies relative to the Fermi level, whereas the effect of the increase in bond-length disorder on the d-band center is negligible. Although these results were obtained for a specific case of non-interacting support and weak temperature dependence of the metal-metal bond length in a model catalyst, this work can be extended to a broad range of real catalysts.

AB - Determination of the factors that affect the d-band center of catalysts is required to explain their catalytic properties. Resonant inelastic X-ray scattering (RIXS) enables direct imaging of electronic transitions in the d-band of Pt catalysts in real time and in realistic environmental conditions. Through a combination of in situ, temperature-resolved RIXS measurements and theoretical simulations we isolated and quantified the effects of bond-length disorder and adsorbate coverage (CO and H-2) on the d-band center of 1.25 nm size Pt catalysts supported on carbon. We found that the decrease in adsorbate coverage at elevated temperatures is responsible for the d band shifts towards higher energies relative to the Fermi level, whereas the effect of the increase in bond-length disorder on the d-band center is negligible. Although these results were obtained for a specific case of non-interacting support and weak temperature dependence of the metal-metal bond length in a model catalyst, this work can be extended to a broad range of real catalysts.

KW - catalysis

KW - nanoparticles

KW - platinum

KW - resonant inelastic X-ray scattering

KW - X-ray absorption spectroscopy

KW - METAL-SURFACES

KW - ELECTRONIC-STRUCTURE

KW - OXYGEN REDUCTION

KW - CO

KW - REACTIVITY

KW - ADSORPTION

KW - STRAIN

KW - EXAFS

U2 - 10.1002/cphc.201400055

DO - 10.1002/cphc.201400055

M3 - Article

VL - 15

SP - 1569

EP - 1572

JO - Chemphyschem

JF - Chemphyschem

SN - 1439-4235

IS - 8

ER -

ID: 107582084