Journal
RUSSIAN JOURNAL OF ELECTROCHEMISTRY
Volume 52, Issue 5, Pages 408-419Publisher
PLEIADES PUBLISHING INC
DOI: 10.1134/S1023193516050074
Keywords
electrooxidation; methanol; carbon monoxide; palladium; molybdenum bronzes
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Funding
- Ministry of Education and Science of the Russian Federation [10.2093.2014/K]
- Russian Foundation for Basic Researches [15-03-03436]
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nPd(0) center dot (H (x-2n) MoO3)/GC electrodes (0 < n < 1) were obtained by currentless redox reaction between hydrogen-containing molybdenum bronzes and palladium(II) chloride. The composites were characterized by electrochemical methods and by SEM, TEM, XRD, XPS, and AES-ICP. The morphology, structure, and composition of the electrodes depend on the degree of reduction of the starting molybdenum bronze. The use of red molybdenum bronze H (x) MoO3 (x a parts per thousand 1.55) led to the formation of a composite characterized by longer palladium/molybdenum oxide compound boundaries than in the case of green molybdenum bronze (x a parts per thousand 1.9). On the nPd(0) center dot (H (x-2n) MoO3)red/GC electrodes, the catalytic effect with respect to methanol electrooxidation (MEO) was significant, while formic acid electrooxidation (FAEO) was accelerated insignificantly. Possible reasons for the difference in the effect of Pd modification with molybdenum bronzes on MEO and FAEO were discussed.
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