PtRu Nanoparticles Deposited by the Sulfite Complex Method on Highly Porous Carbon Xerogels: Effect of the Thermal Treatment
Abstract
:1. Introduction
2. Results and Discussion
2.1. Textural Properties of Carbon Xerogels and PtRu-Catalysts
Sample | SBET (m2 g−1) | Vpore p/p0 ≈ 1 (cm3 g−1) | Vmeso BJH (cm3 g−1) | Vmicro (cm3 g−1) | Mean pore size (nm) |
---|---|---|---|---|---|
CXG | 528 | 1.79 | 1.66 | 0.14 | 23 |
PtRu/CXG-COL | 271 | 0.51 | 0.59 | 0.08 | 19 |
PtRu/CXG-COL-TT200 | 278 | 0.57 | 0.46 | 0.09 | 18 |
PtRu/CXG-COL-TT400 | 332 | 0.66 | 0.55 | 0.11 | 18 |
2.2. PtRu-Catalysts Characterization
Sample | % w/w PtRu | Atomic ratio Pt:Ru | PtRu crystal size | Lattice parameter | XRu in PtRu alloy | |
---|---|---|---|---|---|---|
TGA | XRF | nm | nm | Vegard’s law | Antolini’s equation [22] | |
PtRu/CXG-COL | 25 | 1.6 | 1.6 | 0.386 | 0.35 | 0.49 |
PtRu/CXG-COLTT200 | 25 | 1.6 | 1.8 | 0.387 | 0.39 | 0.37 |
PtRu/CXG-COLTT400 | 25 | 1.6 | 2.0 | 0.385 | 0.43 | 0.50 |
Sample | Pt 4f7/2 | Ru 3p3/2 | Pt/Ru | ||
---|---|---|---|---|---|
Species | Intensity (%) | Species | Intensity (%) | ||
PtRu/CXG- COL | Pt | 46.8 | Ru | 34.6 | 2.2 |
PtO | 44.7 | RuO2 | 53.0 | ||
PtO2 | 8.5 | RuO2·xH2O | 12.4 | ||
PtRu/CXG-COL-TT200 | Pt | 54.2 | Ru | 38.2 | 2.2 |
PtO | 36.6 | RuO2 | 50.2 | ||
PtO2 | 9.2 | RuO2·xH2O | 11.6 | ||
PtRu/CXG-COL-TT400 | Pt | 63.9 | Ru | 48.1 | 1.9 |
PtO | 21.1 | RuO2 | 44 | ||
PtO2 | 15 | RuO2·xH2O | 7.9 |
2.3. Catalytic Activity towards MOR
Sample | ECSA/m2·g−1 PtRu |
---|---|
PtRu/CXG-COL | 56.9 |
PtRu/CXG-COLTT200 | 35.9 |
PtRu/CXG-COLTT400 | 30.4 |
3. Experimental Section
3.1. Carbon Xerogel Synthesis
3.2. Catalysts Preparation
3.3. Physico-Chemical Characterization
3.4. Electrochemical Experiments
4. Conclusions
Acknowledgments
Conflicts of Interest
References
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Alegre, C.; Sebastián, D.; Gálvez, M.E.; Moliner, R.; Stassi, A.; Aricò, A.S.; Lázaro, M.J.; Baglio, V. PtRu Nanoparticles Deposited by the Sulfite Complex Method on Highly Porous Carbon Xerogels: Effect of the Thermal Treatment. Catalysts 2013, 3, 744-756. https://doi.org/10.3390/catal3030744
Alegre C, Sebastián D, Gálvez ME, Moliner R, Stassi A, Aricò AS, Lázaro MJ, Baglio V. PtRu Nanoparticles Deposited by the Sulfite Complex Method on Highly Porous Carbon Xerogels: Effect of the Thermal Treatment. Catalysts. 2013; 3(3):744-756. https://doi.org/10.3390/catal3030744
Chicago/Turabian StyleAlegre, Cinthia, David Sebastián, María Elena Gálvez, Rafael Moliner, Alessandro Stassi, Antonino Salvatore Aricò, María Jesús Lázaro, and Vincenzo Baglio. 2013. "PtRu Nanoparticles Deposited by the Sulfite Complex Method on Highly Porous Carbon Xerogels: Effect of the Thermal Treatment" Catalysts 3, no. 3: 744-756. https://doi.org/10.3390/catal3030744