XPS studies of the fluoride ion-selective electrode membrane LaF3 : evidence for a gel layer on the surface

Roland De Marco; P C Hauser; R W Cattrall; J Liesegang; G L Nyberg; I C Hamilton

doi:10.1002/sia.740140807

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XPS studies of the fluoride ion-selective electrode membrane LaF3 : evidence for a gel layer on the surface

Journal article

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XPS studies of the fluoride ion-selective electrode membrane LaF3 : evidence for a gel layer on the surface

Roland De Marco, P C Hauser, R W Cattrall, J Liesegang, G L Nyberg and I C Hamilton

Surface and Interface Analysis, Vol.14(8), pp.463-468

1989

DOI: https://doi.org/10.1002/sia.740140807

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Abstract

electrodes

fluorine compounds

gels

lanthanum compounds

spectroscopy

XPS has been used to examine the surface of the fluoride ion-selective electrode membrane. It has been found that water chemisorbs onto the surface of the LaF3 crystal. Surface degradation products were found on the LaF3 membrane after prolonged exposure to water. It is proposed that these products influence the time taken to obtain stable electrode potentials. The effect of solutions of low pH on the response of the fluoride electrode has been studied, and a mechanism for their action is proposed. As is the case for glass-electrode membranes, a gel layer has also been observed on the surface of LaF3.

Details

Title: XPS studies of the fluoride ion-selective electrode membrane LaF3 : evidence for a gel layer on the surface
Authors: Roland De Marco (Author) - La Trobe University
P C Hauser (Author) - La Trobe University
R W Cattrall (Author) - La Trobe University
J Liesegang (Author) - La Trobe University
G L Nyberg (Author) - La Trobe University
I C Hamilton (Author) - BHP Central Research Laboratories
Publication details: Surface and Interface Analysis, Vol.14(8), pp.463-468
Publisher: John Wiley & Sons Ltd.
Date published: 1989
DOI: 10.1002/sia.740140807
ISSN: 0142-2421
Organisation Unit: University of the Sunshine Coast, Queensland; Office of the Deputy Vice-Chancellor (Research and Innovation)
Language: English
Record Identifier: 99448613902621
Output Type: Journal article

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