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Self-Assembled Monolayers As Nucleating Centers for the Preparation of Multilayers of Catalytically Active Pt Films
- Source :
- The Journal of Physical Chemistry C. 113:8378-8386
- Publication Year :
- 2009
- Publisher :
- American Chemical Society (ACS), 2009.
-
Abstract
- A soft route for the preparation of catalytically active multilayers of Pt films free from poisoning effects is reported. The SAMs (self-assembled monolayers) were initially formed on the gold substrates and they act as nucleating centers initiating the formation of multilayers of Pt on gold substrates. The nanoscale to mesoscale structures of Pt thus prepared were characterized by SEM and XPS. The SAM-based Pt structures exhibited well-defined hydrogen adsorption, desorption regions associated with very high charge indicating high surface area Pt. The electrocatalytic activity of the multilayers of Pt was characterized by methanol oxidation and a comparison was made with two commercial Pt catalyst preparations.
- Subjects :
- Materials science
Self-assembled monolayer
Hydrogen adsorption
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Catalysis
Crystallography
chemistry.chemical_compound
General Energy
X-ray photoelectron spectroscopy
Chemical engineering
chemistry
Desorption
Monolayer
Methanol
Physical and Theoretical Chemistry
Nanoscopic scale
Subjects
Details
- ISSN :
- 19327455 and 19327447
- Volume :
- 113
- Database :
- OpenAIRE
- Journal :
- The Journal of Physical Chemistry C
- Accession number :
- edsair.doi...........cbb62498330b71f38770b72c0040db51