Light-driven methane dry reforming with single atomic site antenna-reactor plasmonic photocatalysts
| Autor: | Dayne F. Swearer, Jordan Finzel, Luke C. Henderson, Hossein Robatjazi, Liangliang Dong, John Mark P. Martirez, Linan Zhou, Shu Tian, Phillip Christopher, Naomi J. Halas, Minhan Lou, Peter Nordlander, Emily A. Carter, Chao Zhang |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Carbon dioxide reforming Hydrogen Renewable Energy Sustainability and the Environment Energy Engineering and Power Technology chemistry.chemical_element 02 engineering and technology Coke 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Methane 0104 chemical sciences Electronic Optical and Magnetic Materials Catalysis chemistry.chemical_compound Fuel Technology chemistry Chemical engineering Photocatalysis 0210 nano-technology Carbon monoxide Syngas |
| Zdroj: | Nature Energy. 5:61-70 |
| ISSN: | 2058-7546 |
| DOI: | 10.1038/s41560-019-0517-9 |
| Popis: | Syngas, an extremely important chemical feedstock composed of carbon monoxide and hydrogen, can be generated through methane (CH4) dry reforming with CO2. However, traditional thermocatalytic processes require high temperatures and suffer from coke-induced instability. Here, we report a plasmonic photocatalyst consisting of a Cu nanoparticle ‘antenna’ with single-Ru atomic ‘reactor’ sites on the nanoparticle surface, ideal for low-temperature, light-driven methane dry reforming. This catalyst provides high light energy efficiency when illuminated at room temperature. In contrast to thermocatalysis, long-term stability (50 h) and high selectivity (>99%) were achieved in photocatalysis. We propose that light-excited hot carriers, together with single-atom active sites, cause the observed performance. Quantum mechanical modelling suggests that single-atom doping of Ru on the Cu(111) surface, coupled with excited-state activation, results in a substantial reduction in the barrier for CH4 activation. This photocatalyst design could be relevant for future energy-efficient industrial processes. Syngas is a mixture of CO and H2 that can be converted into a variety of fuels. Syngas can be produced thermocatalytically from CH4 and CO2, but this requires high temperatures and coke formation can be a problem. Here the authors demonstrate lower temperature, light-driven production of syngas using a coke-resistant plasmonic photocatalyst. |
| Databáze: | OpenAIRE |
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