Can I read In situ FTIRS and EQCM studies of glycine adsorption and oxidation on Au(1 1 1) electrode in alkaline solutions on EtoBox?

In situ FTIRS and EQCM studies of glycine adsorption and oxidation on Au(1 1 1) electrode in alkaline solutions by Chun-Hua Zhen; Shi-Gang Sun; Chun-Jie Fan; Sheng-Pei Chen; Bing-Wei Mao; You-Jun Fan is a Engineering article available to read on EtoBox.

What is In situ FTIRS and EQCM studies of glycine adsorption and oxidation on Au(1 1 1) electrode in alkaline solutions about?

Dissociative adsorption and oxidation of glycine on Au(1 1 1) single crystal electrodes in alkaline solutions were studied in the present paper using cyclic voltammetry (CV), in situ FTIR spectroscopy (FTIRS) and electrochemical quartz crystal microbalance (EQCM). In situ FTIRS results demonstrated that adsorbates derived from glycine dissociative adsorption are adsorbed cyanide anions (CN ad -). The CN ad -species are stable on Au(1 1 1) surface in the potential region from -0.8 to 0.0 V, and can be oxidized when electrode potential is increased above 0.1 V. The oxidation of CN ad -releases surface active sites for further glycine oxidation. The products of CN ad -oxidation were determined by in situ FTIRS as cyanate (OCN -), aurous cyanide (AuCN) and aurous di-cyanide (Au(CN) 2 -). The formation of Au(CN) 2 -may initiate a dissolution of Au(1 1 1) surface atoms, which has been confirmed by a loss of surface mass determined in EQCM studies. It has revealed also that at high electrode potential region glycine may be split on Au(1 1 1) surface to form AuCH 2 NH 2 and AuCOO -adsorbates. Further oxidation of these species yielded CO 2 and -NH 2 , and the AuCH 2 NH 2 may be also combin

Who reads In situ FTIRS and EQCM studies of glycine adsorption and oxidation on Au(1 1 1) electrode in alkaline solutions?

Author

Chun-Hua Zhen; Shi-Gang Sun; Chun-Jie Fan; Sheng-Pei Chen; Bing-Wei Mao; You-Jun Fan

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0013-4686)

Published

2004

Language

EN

Field

Engineering (Physical Sciences)