I. Mukhopadhyay et al., SURFACE CHARACTERIZATION OF ANODIC FILMS OF PB-SN ALLOY ELECTRODES - THE EFFECT OF SN ON THE PHOTOELECTROCHEMICAL PROPERTIES, Materials chemistry and physics, 49(2), 1997, pp. 169-173
Oxide thin films of Pb-Sn alloy electrodes were synthesised by potenti
odynamic anodisation in hot alkaline solution of sodium sulfate. Films
were characterised by various analytical techniques: XRD, SEM, Raman
spectroscopy and XPS. The XRD and Raman investigations reveal that the
increase in concentration of Sn in the alloy suppresses the formation
of the photoactive phase alpha-PbO but it increases the formation of
the conducting phase, alpha-PbO2. XPS results indicate the presence of
both divalent and tetravalent Pb as well as tetravalent Sn on these f
ilms. It also gives evidence for the decrease in alpha-PbO content upo
n anodisation of the alloy Pb-Sn electrodes.