scholarly journals Heterogeneous electrocatalysis of formic acid oxidation on platinum single crystal electrodes

2017 ◽  
Vol 4 (1) ◽  
pp. 26-31 ◽  
Author(s):  
Ana Boronat-González ◽  
Enrique Herrero ◽  
Juan M. Feliu
Keyword(s):  
Formic Acid ◽  
Single Crystal ◽  
Formic Acid Oxidation ◽  
Acid Oxidation ◽  
Platinum Single Crystal

scholarly journals How palladium inhibits CO poisoning during electrocatalytic formic acid oxidation and carbon dioxide reduction

2022 ◽  
Vol 13 (1) ◽  
Author(s):  
Xiaoting Chen ◽  
Laura P. Granda-Marulanda ◽  
Ian T. McCrum ◽  
Marc T. M. Koper
Keyword(s):  
Carbon Dioxide ◽  
Formic Acid ◽  
Modified Electrode ◽  
Density Functional ◽  
Formic Acid Oxidation ◽  
Carbon Dioxide Reduction ◽  
Acid Oxidation ◽  
Co Poisoning ◽  
Platinum Single Crystal ◽  
Single Crystal Electrode

AbstractDevelopment of reversible and stable catalysts for the electrochemical reduction of CO2 is of great interest. Here, we elucidate the atomistic details of how a palladium electrocatalyst inhibits CO poisoning during both formic acid oxidation to carbon dioxide and carbon dioxide reduction to formic acid. We compare results obtained with a platinum single-crystal electrode modified with and without a single monolayer of palladium. We combine (high-scan-rate) cyclic voltammetry with density functional theory to explain the absence of CO poisoning on the palladium-modified electrode. We show how the high formate coverage on the palladium-modified electrode protects the surface from poisoning during formic acid oxidation, and how the adsorption of CO precursor dictates the delayed poisoning during CO2 reduction. The nature of the hydrogen adsorbed on the palladium-modified electrode is considerably different from platinum, supporting a model to explain the reversibility of this reaction. Our results help in designing catalysts for which CO poisoning needs to be avoided.

NANOELECTROCATALYSTS BASED PALLADIUM FOR FUEL CELLS WITH DIRECT OXIDATION OF FORMIC ACID

2019 ◽  
Vol 6 (3) ◽  
pp. 104-107
Author(s):  
Marina Vladimirovna Lebedeva ◽  
Alexey Petrovich Antropov ◽  
Alexander Victorovich Ragutkin ◽  
Nicolay Andreevich Yashtulov
Keyword(s):  
Formic Acid ◽  
Palladium Nanoparticles ◽  
Oxidation Reaction ◽  
Electrode Materials ◽  
Formic Acid Oxidation ◽  
Energy Sources ◽  
Acid Oxidation ◽  
Direct Oxidation ◽  
Atomic Force ◽  
Formic Acid Oxidation Reaction

In paper electrode materials with palladium nanoparticles on polymer matrix substrates for energy sources have been formed. Nanocomposites were investigated by atomic force and scanning electron microscopy. The catalytic activity of formed electrodes in the formic acid oxidation reaction was evaluated by voltammetry method.

Sign in / Sign up

Export Citation Format

Share Document