ChemInform Abstract: PHOTOELECTROCHEMICAL PROPERTIES OF THE LEAD ELECTRODE DURING ANODIC OXIDATION IN SULFURIC ACID SOLUTION

Pavlov, D.; Zanova, S.; Papazov, G

doi:10.1002/chin.197806020

Chemischer Informationsdienst

1978

DOI: 10.1002/chin.197806020

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ChemInform Abstract: PHOTOELECTROCHEMICAL PROPERTIES OF THE LEAD ELECTRODE DURING ANODIC OXIDATION IN SULFURIC ACID SOLUTION

D. Pavlov¹,

S. Zanova²,

G Papazov³

Abstract: Die bei der anodischen Polarisation einer Pb‐Elektrode in lN H2SO4 nach der Bedeckung der Elektrode mit einer PbSO4‐Schicht zwischen Pb und PbSO4 entstehende, zunächst photo‐inaktive Schicht von tetragonalem PbO wird durch begrenzte Bestrahlung in eine photo‐aktive Schicht umgewandelt, wobei das PbO z.T. in PbOn (1 n 2) übergeht.

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“…Pavlov (15) studied the photoeffects on PbOx formed on the lead and its photo-activation. Lyamina (16) evaluated the semiconducting properties of partially reduced PbO2 by studying the dioxide behavior in a redox system concluding that there is an inhibition of the reduction processes.…”

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Properties of Lead Dioxide Doped with Antimony

Caldara

Delmastro

Fracchia

et al. 1980

J. Electrochem. Soc.

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The effects of antimony on the electrocrystallization and on the electrochemical behavior of α and β lead dioxide were investigated by scanning electron microscopy, x‐ray diffraction, and chemical analysis. Galvanostatic reduction tests in alkaline solutions were also performed. Antimony drastically modifies the crystal morphology of α lead dioxide and, up to a concentration of 0.2%, changes the O/Pb ratio by filling lattice vacancies. On β PbO2 , on the contrary, antimony does not seem to have any significant influence. The reduction tests on lead dioxide showed that the cathodic process occurs in a homogeneous system until the O/Pb ratio reaches a value depending on the dioxide allotropic form and on the antimony content. The O/Pb ratio of intermediate oxide increases from pure α PbO2 (1.33) to Sb‐doped β PbO2 (1.65).

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mentioning

confidence: 99%

Properties of Lead Dioxide Doped with Antimony

Caldara

Delmastro

Fracchia

et al. 1980

J. Electrochem. Soc.

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ChemInform Abstract: PHOTOELECTROCHEMICAL PROPERTIES OF THE LEAD ELECTRODE DURING ANODIC OXIDATION IN SULFURIC ACID SOLUTION

Cited by 1 publication

References 1 publication

Properties of Lead Dioxide Doped with Antimony

Properties of Lead Dioxide Doped with Antimony

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