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ELECTROSYNTHESIS OF LEAD-OXIDE IN ALKALINE-SOLUTION AND ITS PHOTOELECTROCHEMICAL PROPERTIES

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Title ELECTROSYNTHESIS OF LEAD-OXIDE IN ALKALINE-SOLUTION AND ITS PHOTOELECTROCHEMICAL PROPERTIES
 
Creator VELUCHAMY, P
SHARON, M
MINOURA, H
ICHIHASHI, Y
BASAVASWARAN, K
 
Subject sulfuric-acid
anodic-oxidation
electrochemical oxidation
corrosion films
electrode
pbo
spectroscopy
mechanism
reduction
dioxide
 
Description A lead electrode was anodized for various times and at various temperatures in the potential region - 1.25 to + 2.35 V (vs. SCE) in 0.1 M Na2SO4 + 0.1 M NaOH. The lead oxide electrode obtained after 20 min of anodization at 80-degrees-C contains mostly alpha-PbO with some alpha-PbO2 and shows better semi-conducting behaviour. The lead oxide film was characterized by X-ray diffraction, UV-visible reflectance, laser Raman, X-ray photoelectron spectroscopy, scanning electron microscopy and photoelectrochemical techniques. The oxide growth rate under these conditions is very high, yielding an approximately 10 mum thick film within 20 min of anodization. The lead oxide film thus formed shows 0.86% solar to electrical conversion efficiency with 14% quantum yield in 0.1 M Fe(CN)63-/4- redox electrolyte.
 
Publisher ELSEVIER SCIENCE SA LAUSANNE
 
Date 2011-07-29T06:50:40Z
2011-12-26T12:48:31Z
2011-12-27T05:42:47Z
2011-07-29T06:50:40Z
2011-12-26T12:48:31Z
2011-12-27T05:42:47Z
1993
 
Type Article
 
Identifier JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 344(1-2), 73-89
0022-0728
http://dx.doi.org/10.1016/0022-0728(93)80047-L
http://dspace.library.iitb.ac.in/xmlui/handle/10054/7622
http://hdl.handle.net/10054/7622
 
Language en