Bimetallic Catalysts Containing Palladium and Gold on Carbon Support for Hydrogen Electrooxidation: From Au Particles Coated with Submonolayers of Pd to Pd-Au Nanoalloys
Conference attendances
| Language |
Английский |
| Participant type |
Poster |
| Conference |
EuropaCat-XII: 12th European Congress on Catalysis “Catalysis: Balancing the use of fossil and renewable resources”
30 Aug - 4 Sep 2015
,
ConferenceType.INTERNATIONAL_CONGRESS, Казань
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| Authors |
Pyrjaev Pavel Andreevich
1
, Simonov Aleksandr Nikolaevich
2
, Moroz Boris L'vovich
1,3
, Zyuzin Dmitriy Albertovich
1
, Kuznetsov Aleksey Nikolaevich
1
, Prosvirin Igor Petrovich
1
, Bukhtiyarov Valerii Ivanovich
1,3
|
| Affiliations |
| 1 |
Boreskov Institute of Catalysis SB RAS
|
| 2 |
Monash University
|
| 3 |
Novosibirsk State University
|
|
The catalytic activity and CO tolerance of the carbon-supported PdAu nanoparticles with a high dispersion and various surface compositions prepared by two different synthetic strategies were studied in hydrogen electrooxidation reaction (HOR). The PdAu/C catalysts with controlled surface composition of the bimetallic sites prepared by selective electrodeposition of Pd on preimmobilized Au particles (a model approach) proved to be a valid and convenient tool for determination of the surface composition of PdAu nanoparticles providing the maximum catalyst activity in HOR and CO tolerance. The PdAu/C catalysts prepared by impregnation of the Au/C substrate with Pd(II) nitrate solution followed heat treatments for obtaining the proper Pd-Au alloying (a pragmatic approach) showed the significantly higher HOR current densities compared to Pd-electroplated Au catalysts with similar surface Pd:Au composition. The catalysts containing the alloy Pd-Au particles of optimal surface composition are promising for application at the anodes of polymer-electrolyte membrane fuel cells