Gold nanoparticle/multi-walled carbon nanotube composite as novel catalyst for hydrogen evolution reactions
| Autor: | Clay Huff, Tarek M. Abdel-Fattah, Thomas Dushatinski |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Hydrogen Scanning electron microscope Energy-dispersive X-ray spectroscopy Energy Engineering and Power Technology Nanoparticle chemistry.chemical_element Nanotechnology 02 engineering and technology Carbon nanotube 010402 general chemistry 01 natural sciences Catalysis law.invention Sodium borohydride chemistry.chemical_compound law Renewable Energy Sustainability and the Environment 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Fuel Technology Chemical engineering chemistry Colloidal gold 0210 nano-technology |
| Zdroj: | International Journal of Hydrogen Energy. 42:18985-18990 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2017.05.226 |
| Popis: | Gold nanoparticle/multi-walled carbon nanotube (AuMWCNT) composite was synthesized using MWCNTs and functionalized with gold nanoparticles (AuNPs) for applications in hydrogen evolution reactions from hydrogen feedstock materials. The resulting composite was characterized via Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS), Transmission Electron Microscope (TEM), and catalytic activity of hydrogen evolution reactions. Elemental analysis and electron microscopy confirmed a loading of 3.3% for ∼18 nm AuNPs onto ∼30 nm diameter MWCNTs. Catalytic activity study determined that the catalyst performs best at pH 7, with an optimum concentration of 835 μmol evolving 29.0 mL min −1 g cat −1 of hydrogen gas at 303 K using sodium borohydride as hydrogen feedstock material. The activation energy of the reaction in the presence of the AuMWCNT composite was calculated to be one of the lowest of heterogeneous catalysts reported to date at 21.1 kJ mol −1 . |
| Databáze: | OpenAIRE |
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