Molecular orientation change during adsorption of NO and N 2O on Ir(111) observed by real-time wavelength-dispersive x-ray absorption spectroscopy with polarization switching

Kenta Amemiya; Masako Sakamaki; Shuichi Nakamoto; Masaaki Yoshida; Kazuma Suzuki; Hiroshi Kondoh; Tsuneharu Koide; Kenji Ito; Kimichika Tsuchiya; Kentaro Harada; Hiroyuki Sasaki; Tomohiro Aoto; Tatsuro Shioya; Takashi Obina; Shigeru Yamamoto; Yukinori Kobayashi

doi:10.1063/1.4759114

Molecular orientation change during adsorption of NO and N ₂O on Ir(111) observed by real-time wavelength-dispersive x-ray absorption spectroscopy with polarization switching

Kenta Amemiya, Masako Sakamaki, Shuichi Nakamoto, Masaaki Yoshida, Kazuma Suzuki, Hiroshi Kondoh, Tsuneharu Koide, Kenji Ito, Kimichika Tsuchiya, Kentaro Harada, Hiroyuki Sasaki, Tomohiro Aoto, Tatsuro Shioya, Takashi Obina, Shigeru Yamamoto, Yukinori Kobayashi

Department of Chemistry

Research output: Contribution to journal › Article

2 Citations (Scopus)

Abstract

The molecular orientation of NO and N ₂O during adsorption on Ir(111) is observed by combining the wavelength-dispersive x-ray absorption spectroscopy with 1 Hz switching between the vertical and horizontal linear polarizations. It is revealed that NO adsorbs keeping its molecular axis at ∼ 20 ° from surface normal. In contrast, N ₂O rapidly adsorbs up to 2/3 of the saturation coverage with an orientation angle of ∼ 35°, then turns to a slow adsorption phase with larger orientation angles, and gradually reaches its saturation with an average orientation angle of ∼ 45 °. Such a complicated behavior is interpreted by assuming different adsorption sites.

Original language	English
Article number	161601
Journal	Applied Physics Letters
Volume	101
Issue number	16
DOIs	https://doi.org/10.1063/1.4759114
Publication status	Published - 2012 Oct 15

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.4759114

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Amemiya, K., Sakamaki, M., Nakamoto, S., Yoshida, M., Suzuki, K., Kondoh, H., Koide, T., Ito, K., Tsuchiya, K., Harada, K., Sasaki, H., Aoto, T., Shioya, T., Obina, T., Yamamoto, S., & Kobayashi, Y. (2012). Molecular orientation change during adsorption of NO and N ₂O on Ir(111) observed by real-time wavelength-dispersive x-ray absorption spectroscopy with polarization switching. Applied Physics Letters, 101(16), [161601]. https://doi.org/10.1063/1.4759114

Molecular orientation change during adsorption of NO and N ₂O on Ir(111) observed by real-time wavelength-dispersive x-ray absorption spectroscopy with polarization switching. / Amemiya, Kenta; Sakamaki, Masako; Nakamoto, Shuichi; Yoshida, Masaaki; Suzuki, Kazuma; Kondoh, Hiroshi; Koide, Tsuneharu; Ito, Kenji; Tsuchiya, Kimichika; Harada, Kentaro; Sasaki, Hiroyuki; Aoto, Tomohiro; Shioya, Tatsuro; Obina, Takashi; Yamamoto, Shigeru; Kobayashi, Yukinori.

In: Applied Physics Letters, Vol. 101, No. 16, 161601, 15.10.2012.

Research output: Contribution to journal › Article

Amemiya, K, Sakamaki, M, Nakamoto, S, Yoshida, M, Suzuki, K, Kondoh, H, Koide, T, Ito, K, Tsuchiya, K, Harada, K, Sasaki, H, Aoto, T, Shioya, T, Obina, T, Yamamoto, S & Kobayashi, Y 2012, 'Molecular orientation change during adsorption of NO and N ₂O on Ir(111) observed by real-time wavelength-dispersive x-ray absorption spectroscopy with polarization switching', Applied Physics Letters, vol. 101, no. 16, 161601. https://doi.org/10.1063/1.4759114

Amemiya, Kenta ; Sakamaki, Masako ; Nakamoto, Shuichi ; Yoshida, Masaaki ; Suzuki, Kazuma ; Kondoh, Hiroshi ; Koide, Tsuneharu ; Ito, Kenji ; Tsuchiya, Kimichika ; Harada, Kentaro ; Sasaki, Hiroyuki ; Aoto, Tomohiro ; Shioya, Tatsuro ; Obina, Takashi ; Yamamoto, Shigeru ; Kobayashi, Yukinori. / Molecular orientation change during adsorption of NO and N ₂O on Ir(111) observed by real-time wavelength-dispersive x-ray absorption spectroscopy with polarization switching. In: Applied Physics Letters. 2012 ; Vol. 101, No. 16.

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abstract = "The molecular orientation of NO and N 2O during adsorption on Ir(111) is observed by combining the wavelength-dispersive x-ray absorption spectroscopy with 1 Hz switching between the vertical and horizontal linear polarizations. It is revealed that NO adsorbs keeping its molecular axis at ∼ 20 ° from surface normal. In contrast, N 2O rapidly adsorbs up to 2/3 of the saturation coverage with an orientation angle of ∼ 35°, then turns to a slow adsorption phase with larger orientation angles, and gradually reaches its saturation with an average orientation angle of ∼ 45 °. Such a complicated behavior is interpreted by assuming different adsorption sites.",

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AU - Amemiya, Kenta

AU - Sakamaki, Masako

AU - Nakamoto, Shuichi

AU - Yoshida, Masaaki

AU - Suzuki, Kazuma

AU - Kondoh, Hiroshi

AU - Koide, Tsuneharu

AU - Ito, Kenji

AU - Tsuchiya, Kimichika

AU - Harada, Kentaro

AU - Sasaki, Hiroyuki

AU - Aoto, Tomohiro

AU - Shioya, Tatsuro

AU - Obina, Takashi

AU - Yamamoto, Shigeru

AU - Kobayashi, Yukinori

PY - 2012/10/15

Y1 - 2012/10/15

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AB - The molecular orientation of NO and N 2O during adsorption on Ir(111) is observed by combining the wavelength-dispersive x-ray absorption spectroscopy with 1 Hz switching between the vertical and horizontal linear polarizations. It is revealed that NO adsorbs keeping its molecular axis at ∼ 20 ° from surface normal. In contrast, N 2O rapidly adsorbs up to 2/3 of the saturation coverage with an orientation angle of ∼ 35°, then turns to a slow adsorption phase with larger orientation angles, and gradually reaches its saturation with an average orientation angle of ∼ 45 °. Such a complicated behavior is interpreted by assuming different adsorption sites.

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