Adsorption and oxidation of glycine on Au electrode

An in situ surface-enhanced infrared study

Li Chia Chen, Taro Uchida, Hsien-Chang Chang, Masatoshi Osawa

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The adsorption and oxidation of glycine on Au surface are studied by cyclic voltammetry coupled with in situ surface-enhanced infrared spectroscopy. The infrared spectra definitely indicate that glycine is adsorbed on the electrode with two oxygen atoms directing the Cα-C bond perpendicular to the surface. During glycine oxidation, cyanide is formed and oxidized to cyanate at high potentials. It is also shown that ureylene biradical species (deprotpnated urea) bonded to the surface via two nitrogen atoms is formed on oxidized Au surface. Combining experimental results reported in the literature, the mechanism of glycine electrooxidation is discussed.

Original languageEnglish
Pages (from-to)56-59
Number of pages4
JournalElectrochemistry Communications
Volume34
DOIs
Publication statusPublished - 2013 Jan 1

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Glycine
Amino acids
Infrared radiation
Adsorption
Oxidation
Electrodes
Cyanates
Atoms
Electrooxidation
Cyanides
Urea
Cyclic voltammetry
Infrared spectroscopy
Nitrogen
Oxygen

All Science Journal Classification (ASJC) codes

  • Electrochemistry

Cite this

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abstract = "The adsorption and oxidation of glycine on Au surface are studied by cyclic voltammetry coupled with in situ surface-enhanced infrared spectroscopy. The infrared spectra definitely indicate that glycine is adsorbed on the electrode with two oxygen atoms directing the Cα-C bond perpendicular to the surface. During glycine oxidation, cyanide is formed and oxidized to cyanate at high potentials. It is also shown that ureylene biradical species (deprotpnated urea) bonded to the surface via two nitrogen atoms is formed on oxidized Au surface. Combining experimental results reported in the literature, the mechanism of glycine electrooxidation is discussed.",
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Adsorption and oxidation of glycine on Au electrode : An in situ surface-enhanced infrared study. / Chen, Li Chia; Uchida, Taro; Chang, Hsien-Chang; Osawa, Masatoshi.

In: Electrochemistry Communications, Vol. 34, 01.01.2013, p. 56-59.

Research output: Contribution to journalArticle

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