Ruthenium(0) nanoparticles stabilized by metal-organic framework as an efficient electrocatalyst for borohydride oxidation reaction
| Autor: | Mehmet Zahmakiran, Mehmet Yurderi, Gordana Backović, Ahmet Bulut, Gulsah Saydan Kanberoglu, Biljana Šljukić, Diogo M.F. Santos |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Renewable Energy
Sustainability and the Environment Inorganic chemistry Energy Engineering and Power Technology chemistry.chemical_element 02 engineering and technology Chronoamperometry 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Borohydride Electrocatalyst 01 natural sciences Peroxide 0104 chemical sciences Ruthenium Catalysis chemistry.chemical_compound Sodium borohydride Fuel Technology chemistry Hydrogenolysis 0210 nano-technology |
| Zdroj: | International Journal of Hydrogen Energy. 45:27056-27066 |
| ISSN: | 0360-3199 |
| Popis: | Described herein is a new catalytic material comprising Fe-BTC (Basolite F-300) metal-organic framework stabilized ruthenium nanoparticles (Ru@Fe-BTC) and its notable catalytic activity for the borohydride oxidation reaction (BOR). Ru@Fe-BTC catalyst was reproducibly prepared by gas-phase infiltration of Ru (cod) (cot) (cod = 1,5-cyclooctadiene and cot = 1,3,5-cyclooctatriene) precursor followed by hydrogenolysis of the inclusion compound Ru (cod) (cot)@Fe-BTC to form the Ru@Fe-BTC. The resulting catalytic material was characterized by using multi-pronged techniques and the sum of their results revealed the formation of well-dispersed, highly crystalline, and small-sized ruthenium nanoparticles (3.9 nm) within the framework of Fe-BTC by preserving its crystalline structure. Cyclic and linear scan voltammetry as well as chronoamperometry techniques were used to assess the catalytic activity and stability of Ru@Fe-BTC for BOR in strongly alkaline medium at different temperatures (25-65 degrees C) and sodium borohydride concentrations (0.01-0.12 M). The charge transfer coefficient was determined to be 0.85 and BOR at Ru@Fe-BTC was found to be a nearly first-order reaction, with the activation energy amounting to 17 kJ mol(-1). A small-scale direct borohydride/peroxide fuel cell that was assembled using Ru@Fe-BTC as an anodic catalyst delivered a maximum power density of 169 mW cm(-2) at 65 degrees C. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. |
| Databáze: | OpenAIRE |
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