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

doi:10.1021/cs300494f

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

Physics

Research output: Contribution to journal › Article › peer-review

67 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 language	English
Pages (from-to)	2371-2376
Number of pages	6
Journal	ACS Catalysis
Volume	2
Issue number	11
DOIs	https://doi.org/10.1021/cs300494f
Publication status	Published - 2012 Nov 2

All Science Journal Classification (ASJC) codes

Catalysis
Chemistry(all)

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10.1021/cs300494f

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Merte, L. R., Behafarid, F., Miller, D. J., Friebel, D., Cho, S., Mbuga, F., Sokaras, D., Alonso-Mori, R., Weng, T. C., 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, 2(11), 2371-2376. https://doi.org/10.1021/cs300494f

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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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doi = "10.1021/cs300494f",

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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

TY - JOUR

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

Y1 - 2012/11/2

N2 - 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.

AB - 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.

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JO - ACS Catalysis

JF - ACS Catalysis

IS - 11

ER -

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

Abstract

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