Electrochemical oxidation of size-selected pt nanoparticles studied using in situ high-energy-resolution X-ray absorption spectroscopy

Lindsay R. Merte, Farzad Behafarid, Daniel J. Miller, Daniel Friebel, Sangwan Cho, Felix Mbuga, Dimosthenis Sokaras, Roberto Alonso-Mori, Tsu Chien Weng, Dennis Nordlund, Anders Nilsson, Beatriz Roldan Cuenya

Research output: Contribution to journalArticle

64 Citations (Scopus)

Abstract

High-energy-resolution fluorescence-detected X-ray absorption spectroscopy (HERFD-XAS) has been applied to study the chemical state of ∼1.2 nm size-selected Pt nanoparticles (NPs) in an electrochemical environment under potential control. Spectral features due to chemisorbed hydrogen, chemisorbed O/OH, and platinum oxides can be distinguished with increasing potential. Pt electro-oxidation follows two competitive pathways involving both oxide formation and Pt dissolution.

Original languageEnglish
Pages (from-to)2371-2376
Number of pages6
JournalACS Catalysis
Volume2
Issue number11
DOIs
Publication statusPublished - 2012 Nov 2

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X ray absorption spectroscopy
Electrooxidation
Electrochemical oxidation
Oxides
Hydrogen
Dissolution
Fluorescence
Nanoparticles
Platinum
platinum oxide

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)

Cite this

Merte, Lindsay R. ; Behafarid, Farzad ; Miller, Daniel J. ; Friebel, Daniel ; Cho, Sangwan ; Mbuga, Felix ; Sokaras, Dimosthenis ; Alonso-Mori, Roberto ; Weng, Tsu Chien ; Nordlund, Dennis ; Nilsson, Anders ; Roldan Cuenya, Beatriz. / Electrochemical oxidation of size-selected pt nanoparticles studied using in situ high-energy-resolution X-ray absorption spectroscopy. In: ACS Catalysis. 2012 ; Vol. 2, No. 11. pp. 2371-2376.
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abstract = "High-energy-resolution fluorescence-detected X-ray absorption spectroscopy (HERFD-XAS) has been applied to study the chemical state of ∼1.2 nm size-selected Pt nanoparticles (NPs) in an electrochemical environment under potential control. Spectral features due to chemisorbed hydrogen, chemisorbed O/OH, and platinum oxides can be distinguished with increasing potential. Pt electro-oxidation follows two competitive pathways involving both oxide formation and Pt dissolution.",
author = "Merte, {Lindsay R.} and Farzad Behafarid and Miller, {Daniel J.} and Daniel Friebel and Sangwan Cho and Felix Mbuga and Dimosthenis Sokaras and Roberto Alonso-Mori and Weng, {Tsu Chien} and Dennis Nordlund and Anders Nilsson and {Roldan Cuenya}, Beatriz",
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Merte, LR, Behafarid, F, Miller, DJ, Friebel, D, Cho, S, Mbuga, F, Sokaras, D, Alonso-Mori, R, Weng, TC, Nordlund, D, Nilsson, A & Roldan Cuenya, B 2012, 'Electrochemical oxidation of size-selected pt nanoparticles studied using in situ high-energy-resolution X-ray absorption spectroscopy', ACS Catalysis, vol. 2, no. 11, pp. 2371-2376. https://doi.org/10.1021/cs300494f

Electrochemical oxidation of size-selected pt nanoparticles studied using in situ high-energy-resolution X-ray absorption spectroscopy. / Merte, Lindsay R.; Behafarid, Farzad; Miller, Daniel J.; Friebel, Daniel; Cho, Sangwan; Mbuga, Felix; Sokaras, Dimosthenis; Alonso-Mori, Roberto; Weng, Tsu Chien; Nordlund, Dennis; Nilsson, Anders; Roldan Cuenya, Beatriz.

In: ACS Catalysis, Vol. 2, No. 11, 02.11.2012, p. 2371-2376.

Research output: Contribution to journalArticle

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T1 - Electrochemical oxidation of size-selected pt nanoparticles studied using in situ high-energy-resolution X-ray absorption spectroscopy

AU - Merte, Lindsay R.

AU - Behafarid, Farzad

AU - Miller, Daniel J.

AU - Friebel, Daniel

AU - Cho, Sangwan

AU - Mbuga, Felix

AU - Sokaras, Dimosthenis

AU - Alonso-Mori, Roberto

AU - Weng, Tsu Chien

AU - Nordlund, Dennis

AU - Nilsson, Anders

AU - Roldan Cuenya, Beatriz

PY - 2012/11/2

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