In situ ATR-IR study of Fe(CN)                         6                                                                              3−                         /Fe(CN)                         6                                                                              4−                          redox system on boron-doped diamond electrode

Naoki Kamoshida; Seiji Kasahara; Norihito Ikemiya; Nagahiro Hoshi; Masashi Nakamura; Yasuaki Einaga

doi:10.1016/j.diamond.2019.01.021

In situ ATR-IR study of Fe(CN) ₆ ³⁻ /Fe(CN) ₆ ⁴⁻ redox system on boron-doped diamond electrode

Naoki Kamoshida, Seiji Kasahara, Norihito Ikemiya, Nagahiro Hoshi, Masashi Nakamura, Yasuaki Einaga

Department of Chemistry

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

8 Citations (Scopus)

Abstract

Hexacyanoferrate redox couple is extensively used as a benchmark to evaluate electrode activity in aqueous electrochemistry. Interestingly, boron-doped diamond (BDD) electrode shows surface-dependent behaviors: fast electron transfer rate on hydrogen terminated surface and slow rate on oxygen terminated surface. On the other hand, origin of the surface-dependent response still remains unclear. In this study, we spectroscopically investigated the determinants of electrochemical activity of this system using in situ ATR-IR technique. Our experiment revealed that adsorbed intermediate species of this redox system exist on the hydrogen terminated BDD. On the oxygen terminated BDD, the bands of adsorbed species were weakened, indicating that the oxygen functional groups specifically inhibited the adsorption of the intermediate species.

Original language	English
Pages (from-to)	50-53
Number of pages	4
Journal	Diamond and Related Materials
Volume	93
DOIs	https://doi.org/10.1016/j.diamond.2019.01.021
Publication status	Published - 2019 Mar

Keywords

ATR-IR
Boron-doped diamond
Electrochemistry
In situ spectroscopy

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Chemistry(all)
Mechanical Engineering
Materials Chemistry
Electrical and Electronic Engineering

Access to Document

10.1016/j.diamond.2019.01.021

Cite this

Kamoshida, N., Kasahara, S., Ikemiya, N., Hoshi, N., Nakamura, M., & Einaga, Y. (2019). In situ ATR-IR study of Fe(CN) ₆ ³⁻ /Fe(CN) ₆ ⁴⁻ redox system on boron-doped diamond electrode Diamond and Related Materials, 93, 50-53. https://doi.org/10.1016/j.diamond.2019.01.021

In situ ATR-IR study of Fe(CN) ₆ ³⁻ /Fe(CN) ₆ ⁴⁻ redox system on boron-doped diamond electrode . / Kamoshida, Naoki; Kasahara, Seiji; Ikemiya, Norihito et al.
In: Diamond and Related Materials, Vol. 93, 03.2019, p. 50-53.

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

Kamoshida, N, Kasahara, S, Ikemiya, N, Hoshi, N, Nakamura, M & Einaga, Y 2019, ' In situ ATR-IR study of Fe(CN) ₆ ³⁻ /Fe(CN) ₆ ⁴⁻ redox system on boron-doped diamond electrode ', Diamond and Related Materials, vol. 93, pp. 50-53. https://doi.org/10.1016/j.diamond.2019.01.021

Kamoshida N, Kasahara S, Ikemiya N, Hoshi N, Nakamura M, Einaga Y. In situ ATR-IR study of Fe(CN) ₆ ³⁻ /Fe(CN) ₆ ⁴⁻ redox system on boron-doped diamond electrode Diamond and Related Materials. 2019 Mar;93:50-53. doi: 10.1016/j.diamond.2019.01.021

Kamoshida, Naoki ; Kasahara, Seiji ; Ikemiya, Norihito et al. / In situ ATR-IR study of Fe(CN) ₆ ³⁻ /Fe(CN) ₆ ⁴⁻ redox system on boron-doped diamond electrode In: Diamond and Related Materials. 2019 ; Vol. 93. pp. 50-53.

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abstract = "Hexacyanoferrate redox couple is extensively used as a benchmark to evaluate electrode activity in aqueous electrochemistry. Interestingly, boron-doped diamond (BDD) electrode shows surface-dependent behaviors: fast electron transfer rate on hydrogen terminated surface and slow rate on oxygen terminated surface. On the other hand, origin of the surface-dependent response still remains unclear. In this study, we spectroscopically investigated the determinants of electrochemical activity of this system using in situ ATR-IR technique. Our experiment revealed that adsorbed intermediate species of this redox system exist on the hydrogen terminated BDD. On the oxygen terminated BDD, the bands of adsorbed species were weakened, indicating that the oxygen functional groups specifically inhibited the adsorption of the intermediate species.",

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AB - Hexacyanoferrate redox couple is extensively used as a benchmark to evaluate electrode activity in aqueous electrochemistry. Interestingly, boron-doped diamond (BDD) electrode shows surface-dependent behaviors: fast electron transfer rate on hydrogen terminated surface and slow rate on oxygen terminated surface. On the other hand, origin of the surface-dependent response still remains unclear. In this study, we spectroscopically investigated the determinants of electrochemical activity of this system using in situ ATR-IR technique. Our experiment revealed that adsorbed intermediate species of this redox system exist on the hydrogen terminated BDD. On the oxygen terminated BDD, the bands of adsorbed species were weakened, indicating that the oxygen functional groups specifically inhibited the adsorption of the intermediate species.

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