Electrochemical formation of ion-conducting oxo-phosphate-molybdate polymer on aluminium
نویسندگان
چکیده
The state of the electrochemical behaviour Al electrode in aqueous solutions containing Na2MoO4 + H3PO4 chitosan was investigated by methods currentless chronopotentiometry, chronoamperometry, optical and scanning electron microscopy. modification surface polymolybdate phosphate layers carried out a potentiostatic mode potentials range from ?1 to ?3 V polarization time (from 15 90 min). elemental composition layer metal before after cathodic were investigated. formation matrix polymeric structures ion-conducting (H+, Na+) heteronuclear polyphosphate-molybdate complexes double salts Na6AlnMo7-nO24 Na2yAl2(MoO4)y(PO4)3-y established. rate hydrogen sodium intercalation into structure polyoxophosphate-molybdate increased sharply with an increase potential ?1.3 ?3.0 V. addition solution enhances film-forming effect oxo-phosphate ? molybdate layer.
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ژورنال
عنوان ژورنال: Journal of The Serbian Chemical Society
سال: 2021
ISSN: ['1820-7421', '0352-5139']
DOI: https://doi.org/10.2298/jsc20913081h