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Ligand effect of SnO2 on a Pt–Ru catalyst and the relationship between bond strength and CO tolerance
- Source :
- Catalysis Science & Technology. 6:3214-3219
- Publication Year :
- 2016
- Publisher :
- Royal Society of Chemistry (RSC), 2016.
-
Abstract
- Pt–Ru/SnO2/C catalysts were prepared by a rapid quenching method. The structure and morphology of Pt–Ru particles in Pt–Ru/SnO2/C are controlled to obtain the same Pt–Ru particle as that in a commercial Pt–Ru catalyst. The Pt–Ru/SnO2/C and commercial Pt–Ru catalysts were characterized by X-ray diffraction and scanning transmission electron microscopy. Electrochemical activities were evaluated by CO stripping voltammetry, single cell tests, in situ infrared reflection–absorption spectroscopy (IRRAS) and surface-enhanced infrared absorption spectroscopy (SEIRAS). The Pt–Ru/SnO2/C catalyst showed the same structure, morphology and catalytic activity for hydrogen oxidation reaction (HOR) in the absence of CO as those of a Pt–Ru/C catalyst. Both the activity for electrochemical CO oxidation and Pt–CO bond strength were quantitatively evaluated. The addition of SnO2 decreased the Pt–CO bond strength with maintained HOR activity to enhance CO tolerance.
- Subjects :
- Quenching (fluorescence)
Bond strength
Ligand
Chemistry
Analytical chemistry
Infrared spectroscopy
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
Electrochemistry
01 natural sciences
Catalysis
0104 chemical sciences
Scanning transmission electron microscopy
0210 nano-technology
Voltammetry
Nuclear chemistry
Subjects
Details
- ISSN :
- 20444761 and 20444753
- Volume :
- 6
- Database :
- OpenAIRE
- Journal :
- Catalysis Science & Technology
- Accession number :
- edsair.doi...........2af9925375e72b40437f6241f9769863