NDLI: Methanol, Ethanol, and Formic Acid Oxidation on New Platinum-Containing Catalysts

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Methanol, Ethanol, and Formic Acid Oxidation on New Platinum-Containing Catalysts

Content Provider	MDPI
Author	Menshikov, Vladislav S. Novomlinsky, Ivan N. Belenov, Sergey V. Alekseenko, Anastasya A. Safronenko, Olga I. Guterman, Vladimir E.
Copyright Year	2021
Description	Electrooxidation of methanol, ethanol, and formic acid was studied on three platinum-containing electrocatalysts: PtCu/C, Pt/(SnO2/C), and Pt/C, Pt content being about 20 wt%. In all reactions, the integral specific activity of the catalysts, estimated from the results of cyclic voltammetry, grows in the Pt/C < Pt/(SnO2/C) < PtCu/C row. The influence of the reagent nature subjected to electrooxidation is manifested both in the difference of the absolute rate values of the corresponding reactions, decreasing in the order CH3OH > HCOOH > C2H5OH, and in the different ratio of these rates on different catalysts and at different potentials. Pt/(SnO2/C) catalyst containing SnO2 nanoparticles is the most active among the studied catalysts in methanol and formic acid electrooxidation reactions under potentiostatic conditions at the E = 0.60 V. Moreover, in formic acid electrooxidation reaction it is significantly superior to even the PtRu/C commercial catalyst. The reasons for the positive influence of Cu atoms and SnO2 nanoparticles on the catalytic activity of platinum are presumably associated with different effects: Interaction of the d-orbitals of copper and platinum atoms in bimetallic nanoparticles and implementation of the bifunctional catalysis mechanism on the adjacent platinum and tin dioxide nanoparticles.
Starting Page	158
e-ISSN	20734344
DOI	10.3390/catal11020158
Journal	Catalysts
Issue Number	2
Volume Number	11
Language	English
Publisher	MDPI
Publisher Date	2021-01-23
Access Restriction	Open
Subject Keyword	Catalysts Electrochemistry Electrooxidation Formic Acid Oxidation Platinum-contained Electrocatalyst Catalytic Activity Alcohols Oxidation
Content Type	Text
Resource Type	Article

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