Real-time observation of CO oxidation reaction on Ir(111) surface at 33 ms resolution by means of wavelength-dispersive near-edge x-ray absorption fine structure spectroscopy

Kenta Amemiya, Yuka Kousa, Shuichi Nakamoto, Taiga Harada, Shogo Kozai, Masaaki Yoshida, Hitoshi Abe, Ryohei Sumii, Masako Sakamaki, Hiroshi Kondoh

Research output: Contribution to journalArticle

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Abstract

The CO oxidation reaction on Ir(111) is observed by the near-edge x-ray absorption fine structure (NEXAFS) spectroscopy in the soft x-ray region. A continuous data acquisition at 33 ms real-time resolution is realized for a single event of the reaction without the repetition, by adopting the wavelength-dispersive NEXAFS technique. The time evolution of the coverages for atomic O and molecular CO is quantitatively estimated during the reaction. The obtained activation energy is significantly larger than that on Pt(111).

Original languageEnglish
Article number074104
JournalApplied Physics Letters
Volume99
Issue number7
DOIs
Publication statusPublished - 2011 Aug 15

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x ray absorption
fine structure
oxidation
wavelengths
spectroscopy
data acquisition
repetition
activation energy
x rays

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Real-time observation of CO oxidation reaction on Ir(111) surface at 33 ms resolution by means of wavelength-dispersive near-edge x-ray absorption fine structure spectroscopy. / Amemiya, Kenta; Kousa, Yuka; Nakamoto, Shuichi; Harada, Taiga; Kozai, Shogo; Yoshida, Masaaki; Abe, Hitoshi; Sumii, Ryohei; Sakamaki, Masako; Kondoh, Hiroshi.

In: Applied Physics Letters, Vol. 99, No. 7, 074104, 15.08.2011.

Research output: Contribution to journalArticle

Amemiya, Kenta ; Kousa, Yuka ; Nakamoto, Shuichi ; Harada, Taiga ; Kozai, Shogo ; Yoshida, Masaaki ; Abe, Hitoshi ; Sumii, Ryohei ; Sakamaki, Masako ; Kondoh, Hiroshi. / Real-time observation of CO oxidation reaction on Ir(111) surface at 33 ms resolution by means of wavelength-dispersive near-edge x-ray absorption fine structure spectroscopy. In: Applied Physics Letters. 2011 ; Vol. 99, No. 7.
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AU - Harada, Taiga

AU - Kozai, Shogo

AU - Yoshida, Masaaki

AU - Abe, Hitoshi

AU - Sumii, Ryohei

AU - Sakamaki, Masako

AU - Kondoh, Hiroshi

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