A straightforward one-pot synthesis of Pd–Ag supported on activated carbon as a robust catalyst toward ethanol electrooxidation
| Autor: | Faramarz Afshar-Taromi, Rahebeh Amiri Dehkharghani, Seyed Mohammad Mostashari, Majid Farsadrooh |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment Reducing agent One-pot synthesis Energy Engineering and Power Technology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Direct-ethanol fuel cell Electrochemistry 01 natural sciences 0104 chemical sciences Catalysis chemistry.chemical_compound Fuel Technology Chemical engineering chemistry Sodium hydroxide medicine 0210 nano-technology Bimetallic strip Activated carbon medicine.drug |
| Zdroj: | International Journal of Hydrogen Energy. 46:9406-9416 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2020.12.108 |
| Popis: | Direct Ethanol Fuel Cells (DEFCs) have fascinated remarkable attention on account of their high current density and being environmentally friendly. Developing efficient and durable catalysts with a simple and fast method is a great challenge in the practical applications of DEFCs. To this end, the bimetallic Pd–Ag with adjustable Pd:Ag ratios were synthesized via a simple and one-pot strategy on activated carbon as a support in this study. The Pd–Ag/C catalysts with different molar ratios were synthesized by simultaneous reduction of Pd and Ag ions in the presence of the ethanolic sodium hydroxide as a green reducing agent for the first time. Several different methods, including FE-SEM, HR-TEM, XRD, XPS EDX, ICP-OES, and BET were used to confirm the structure and morphology of the catalysts. The performance of catalysts was also examined in ethanol oxidation. Obtained results of electrochemical experiments revealed that the Pd3–Ag1/C catalyst had superior catalytic activity (2911.98 mAmg−1Pd), durability, and long-stability compared to the other catalysts. The excellent catalytic characteristic can be attributed to the synergistic effect between Pd and Ag. We presume that our simple method have the chance to be utilized as a proper method for the synthesis of fuel cell catalysts. |
| Databáze: | OpenAIRE |
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