Nanoparticle Silver Catalysts That Show Enhanced Activity for Carbon Dioxide Electrolysis
Electrochemical conversion of CO2 has been proposed both as a way to reduce CO2 emissions and as a source of renewable fuels and chemicals, but conversion rates need improvement before the process will be practical. In this article, we show that the rate of CO2 conversion per unit surface area is ab...
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| Veröffentlicht in: | Journal of physical chemistry. C 2013-01, Vol.117 (4), p.1627-1632 |
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| container_issue | 4 |
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| container_title | Journal of physical chemistry. C |
| container_volume | 117 |
| creator | Salehi-Khojin, Amin Jhong, Huei-Ru Molly Rosen, Brian A Zhu, Wei Ma, Sichao Kenis, Paul J. A Masel, Richard I |
| description | Electrochemical conversion of CO2 has been proposed both as a way to reduce CO2 emissions and as a source of renewable fuels and chemicals, but conversion rates need improvement before the process will be practical. In this article, we show that the rate of CO2 conversion per unit surface area is about 10 times higher on 5 nm silver nanoparticles than on bulk silver even though measurements on single crystal catalysts show much smaller variations in rate. The enhancement disappears on 1 nm particles. We attribute this effect to a volcano effect associated with changes of the binding energy of key intermediates as the particle size decreases. These results demonstrate that nanoparticle catalysts have unique properties for CO2 conversion. |
| doi_str_mv | 10.1021/jp310509z |
| format | Article |
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These results demonstrate that nanoparticle catalysts have unique properties for CO2 conversion.</description><subject>Catalysis</subject><subject>Catalysts: preparations and properties</subject><subject>Catalytic reactions</subject><subject>Chemistry</subject><subject>Cross-disciplinary physics: materials science; rheology</subject><subject>Exact sciences and technology</subject><subject>General and physical chemistry</subject><subject>Materials science</subject><subject>Nanopowders</subject><subject>Nanoscale materials and structures: fabrication and characterization</subject><subject>Physics</subject><subject>Theory of reactions, general kinetics. Catalysis. 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| ispartof | Journal of physical chemistry. C, 2013-01, Vol.117 (4), p.1627-1632 |
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| source | American Chemical Society Publications |
| subjects | Catalysis Catalysts: preparations and properties Catalytic reactions Chemistry Cross-disciplinary physics: materials science rheology Exact sciences and technology General and physical chemistry Materials science Nanopowders Nanoscale materials and structures: fabrication and characterization Physics Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry |
| title | Nanoparticle Silver Catalysts That Show Enhanced Activity for Carbon Dioxide Electrolysis |
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