ABNORMAL PHOTOCURRENT OF THE ANODIC FILM ON LEAD IN SULFURIC-ACID-SOLUTION

Authors
WAN YQ WANG QZ LIU HT ZHUANG JH ZHOU WF
Citation
Yq. Wan et al., ABNORMAL PHOTOCURRENT OF THE ANODIC FILM ON LEAD IN SULFURIC-ACID-SOLUTION, Journal of electroanalytical chemistry [1992], 414(2), 1996, pp. 159-161
Citations number
17
Categorie Soggetti
Electrochemistry,"Chemistry Analytical
Journal title
Journal of electroanalytical chemistry [1992]
ISSN journal
15726657 → ACNP
Volume
414
Issue
2
Year of publication
1996
Pages
159 - 161
Database
ISI
SICI code
Abstract
The abnormal photocurrent of the anodic film formed on lead in 4.5 mol dm(-3) H2SO4 at 1.4V (vs. Hg/Hg2SO4) for 1 h was investigated by seve ral electrochemical methods. The experimental results show the abnorma l photocurrent is due to a two-phase system in the film, i.e. a p-type semiconductor t-PbO and an n-type semiconductor PbO1.41. The composit ion of the two-phase system is about PbO1.19 when the photocurrent is zero.