In situ synchrotron radiation grazing incidence X-ray diffraction - A powerful technique for the characterization of solid-state ion-selective electrode surfaces
MetadataShow full item record
An in situ surface study of the iron chalcogenide glass membrane ion-selective electrode (ISE) in aqueous media has been undertaken using a tandem technique of mixed potential/synchrotron radiation grazing incidence X-ray diffraction (SR-GIXRD) and atomic force microscopy (AFM). This work has simultaneously monitored the mixed potential and in situ surface diffraction patterns of this crystalline glassy material, showing that the observed gradual shift of the electrode potential in the anodic direction is linked to the preferential dissolution of the GeSe (1 1 1), GeSe (1 0 1) and GeSe (1 4 1) and/or Sb2Se3 (0 1 3), Sb2Se3 (2 2 1) and Sb2Se3 (0 2 0) surfaces. Expectedly, these observations are internally consistent with preferential oxidative attack of the crystalline regions of the membrane comprising GeSe and/or Sb2Se3, as evidenced by AFM imaging of the electrode surface. Clearly, this work corroborates the results of previous ex situ surface studies on the iron chalcogenide glass ISE, whereby it was shown that alkaline saline solutions have a tendency to alter the surface chemistry and concomitant response characteristics of the ISE.
De Marco, Roland and Jiang, Zhong-Tao and Pejcic, Bobby and Van Riessen, Arie (2006) In situ synchrotron radiation grazing incidence X-ray diffraction - A powerful technique for the characterization of solid-state ion-selective electrode surfaces, Electrochimica Acta 51:4886-4891.
Showing items related by title, author, creator and subject.
Veder, Jean-Pierre M. (2010)This thesis reports on a methodology for the nanocharacterization of complex electrochemical systems. A series of powerful techniques have been adapted and applied to studies of two scientifically important electrochemical ...
A multi-technique surface study of the mercury(II) chalcogenide ion-selective electrode in saline mediaDe Marco, Roland; Pejcic, Bobby; Prince, K.; Van Riessen, Arie (2003)X-ray photoelectron spectroscopy (XPS), secondary ion mass spectroscopy (SIMS), rotating disc electrode - electrochemical impedance spectroscopy (RDE-EIS) and synchrotron radiation - grazing incidence X-ray diffraction ...
An in situ electrochemical impedance spectroscopy/synchrotron radiation grazing incidence X-ray diffraction study of the influence of acetate on the carbon dioxide corrosion of mild steelDe Marco, Roland; JIang, Zhong-tao; John, Doug; Sercombe, Matthew; Kinsella, Brian (2007)A combination of electrochemical impedance spectroscopy (EIS) and in situ synchrotron radiation grazing incidence X-ray diffraction (SRGIXRD) has been used to study the influence of acetate on the carbon dioxide corrosion ...