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Title: Synergetic effect on catalytic activity and charge transfer in Pt-Pd bimetallic model catalysts prepared by atomic layer deposition

Abstract

Pt-Pd bimetallic nanoparticles were synthesized on TiO 2 support on the planar substrate as well as on high surface area SiO 2 gel by atomic layer deposition to identify the catalytic performance improvement after the formation of Pt-Pd bimetallic nanoparticles by surface analysis techniques. From X-ray absorption near edge spectra of Pt-Pd bimetallic nanoparticles, d-orbital hybridization between Pt 5 d and Pd 4 d was observed, which is responsible for charge transfer from Pt to Pd. Moreover, it was found from the in situ grazing incidence X-ray absorption spectroscopy study that Pt-Pd nanoparticles have a Pd shell/Pt core structure with CO adsorption. Here, resonant photoemission spectroscopy on Pt-Pd bimetallic nanoparticles showed that Pd resonant intensity is enhanced compared to that of Pd monometallic nanoparticles because of d-orbital hybridization and electronic states broadening of Pt and Pd compared monometallic catalysts, which results in catalytic performance improvement.

Authors:
ORCiD logo [1];  [2];  [3];  [2];  [3]; ORCiD logo [1]
  1. Univ. of Alabama, Huntsville, AL (United States)
  2. Louisiana State Univ., Baton Rouge, LA (United States)
  3. Argonne National Lab. (ANL), Lemont, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); American Chemical Society - Petroleum Research Fund
OSTI Identifier:
1591762
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Chemical Physics
Additional Journal Information:
Journal Volume: 152; Journal Issue: 2; Journal ID: ISSN 0021-9606
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Jang, Moon-Hyung, Kizilkaya, Orhan, Kropf, A. Jeremy, Kurtz, Richard L., Elam, Jeffrey W., and Lei, Yu. Synergetic effect on catalytic activity and charge transfer in Pt-Pd bimetallic model catalysts prepared by atomic layer deposition. United States: N. p., 2020. Web. doi:10.1063/1.5128740.
Jang, Moon-Hyung, Kizilkaya, Orhan, Kropf, A. Jeremy, Kurtz, Richard L., Elam, Jeffrey W., & Lei, Yu. Synergetic effect on catalytic activity and charge transfer in Pt-Pd bimetallic model catalysts prepared by atomic layer deposition. United States. doi:10.1063/1.5128740.
Jang, Moon-Hyung, Kizilkaya, Orhan, Kropf, A. Jeremy, Kurtz, Richard L., Elam, Jeffrey W., and Lei, Yu. Tue . "Synergetic effect on catalytic activity and charge transfer in Pt-Pd bimetallic model catalysts prepared by atomic layer deposition". United States. doi:10.1063/1.5128740.
@article{osti_1591762,
title = {Synergetic effect on catalytic activity and charge transfer in Pt-Pd bimetallic model catalysts prepared by atomic layer deposition},
author = {Jang, Moon-Hyung and Kizilkaya, Orhan and Kropf, A. Jeremy and Kurtz, Richard L. and Elam, Jeffrey W. and Lei, Yu},
abstractNote = {Pt-Pd bimetallic nanoparticles were synthesized on TiO2 support on the planar substrate as well as on high surface area SiO2 gel by atomic layer deposition to identify the catalytic performance improvement after the formation of Pt-Pd bimetallic nanoparticles by surface analysis techniques. From X-ray absorption near edge spectra of Pt-Pd bimetallic nanoparticles, d-orbital hybridization between Pt 5d and Pd 4d was observed, which is responsible for charge transfer from Pt to Pd. Moreover, it was found from the in situ grazing incidence X-ray absorption spectroscopy study that Pt-Pd nanoparticles have a Pd shell/Pt core structure with CO adsorption. Here, resonant photoemission spectroscopy on Pt-Pd bimetallic nanoparticles showed that Pd resonant intensity is enhanced compared to that of Pd monometallic nanoparticles because of d-orbital hybridization and electronic states broadening of Pt and Pd compared monometallic catalysts, which results in catalytic performance improvement.},
doi = {10.1063/1.5128740},
journal = {Journal of Chemical Physics},
number = 2,
volume = 152,
place = {United States},
year = {2020},
month = {1}
}

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