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

doi:10.1063/1.3624587

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

Department of Chemistry

Research output: Contribution to journal › Article

7 Citations (Scopus)

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 language	English
Article number	074104
Journal	Applied Physics Letters
Volume	99
Issue number	7
DOIs	https://doi.org/10.1063/1.3624587
Publication status	Published - 2011 Aug 15

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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Amemiya, K., Kousa, Y., Nakamoto, S., Harada, T., Kozai, S., Yoshida, M., Abe, H., Sumii, R., Sakamaki, M., & Kondoh, H. (2011). 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. Applied Physics Letters, 99(7), [074104]. https://doi.org/10.1063/1.3624587

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 journal › Article

Amemiya, K, Kousa, Y, Nakamoto, S, Harada, T, Kozai, S, Yoshida, M, Abe, H, Sumii, R, Sakamaki, M & Kondoh, H 2011, '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', Applied Physics Letters, vol. 99, no. 7, 074104. https://doi.org/10.1063/1.3624587

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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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).",

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