Carbon supported PdM (M = Fe, Co) electrocatalysts for formic acid oxidation. Influence of the Fe and Co precursors
| Autor: | P. Morales-Gil, María Victoria Martínez-Huerta, Manuel Palomar-Pardavé, S. Pérez-Rodríguez, A. Ezeta-Mejía, M. G. Montes de Oca-Yemha, Mario Romero-Romo, L. Juárez-Marmolejo, María Jesús Lázaro |
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| Přispěvatelé: | Consejo Nacional de Ciencia y Tecnología (México), L'Oréal-UNESCO For Women in Science, Ministerio de Economía y Competitividad (España), Juárez Marmolejo, Leticia [0000-0001-6519-1811], Pérez Rodríguez, Sara [0000-0002-8255-6904], Montes de Oca Yemha, María G. [0000-0002-1637-1688], Palomar Pardavé, Manuel [0000-0002-2944-3599], Romero Romo, Mario A. [0000-0002-5783-5776], Ezeta Mejía, Araceli [0000-0001-6529-6592], Morales Gil, Perla [0000-0003-1761-8723], Martínez Huerta, M.ª Victoria [0000-0002-2644-0982], Lázaro Elorri, María Jesús [0000-0002-4769-2564], Juárez Marmolejo, Leticia, Pérez Rodríguez, Sara, Montes de Oca Yemha, María G., Palomar Pardavé, Manuel, Romero Romo, Mario A., Ezeta Mejía, Araceli, Morales Gil, Perla, Martínez Huerta, M.ª Victoria, Lázaro Elorri, María Jesús |
| Rok vydání: | 2019 |
| Předmět: |
Oxide
Energy Engineering and Power Technology chemistry.chemical_element 02 engineering and technology 010402 general chemistry Electrochemistry Electrocatalyst 01 natural sciences Catalysis Metal chemistry.chemical_compound Palladium-iron Formic acid oxidation Renewable Energy Sustainability and the Environment Carbon black 021001 nanoscience & nanotechnology Condensed Matter Physics CO oxidation 0104 chemical sciences Fuel Technology chemistry visual_art visual_art.visual_art_medium Palladium-cobalt 0210 nano-technology Carbon Palladium Nuclear chemistry |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| ISSN: | 0360-3199 |
| Popis: | 8 Figuras.- 4 Tablas Pd and PdM (M = Fe or Co) nanostructured electrocatalysts were synthesized by the impregnation method and supported on carbon black Vulcan XC-72R for the formic acid oxidation reaction, FAOR, in acid medium. Nitrates or chlorides were used as Fe and Co precursors to study the counter ion role on the physicochemical features and electrochemical performance of the electrocatalysts. TEM analysis showed that PdM was deposited on the carbon material with a particle size around 2–3 nm. From XRD, peaks associated with the fcc palladium planes were observed along with evidence of PdM alloy formation, particularly when the nitrate salts were used as metal precursors. Furthermore, XPS analyses indicated that nitrates promote the metal oxide formation to a greater extent than chlorides, mainly for Pd. PdCo electrocatalyst obtained from nitrates exhibited the highest performance for FAOR with a steady state current density of 451 and 313 μA cm−2 at 200 and 400 mV respectively, which is in both cases, 3 times larger than that developed for a commercial Pd/C catalyst. LJM is grateful to CONACYT for the grant awarded for this research, as well as to the UAM-A and the ICB for the support provided. MGMY, MRR, MPP and AEM thank the SNI for the distinction of their membership and the stipend provided. MGMY is indebted to L'oreál-UNESCO-CONACyT-AMC for the grant Women in Science 2016. MJL and SPR gratefully acknowledge financial support given by Spanish MINECO (ENE2014-52158-C2-1-R). |
| Databáze: | OpenAIRE |
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