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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2410.22986 |
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| _version_ | 1866917823484264448 |
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| author | Wohlwend, Jelena Wipf, Oliver Kiwic, David Käch, Siro Mächler, Benjamin Haberfehlner, Georg Spolenak, Ralph Galinski, Henning |
| author_facet | Wohlwend, Jelena Wipf, Oliver Kiwic, David Käch, Siro Mächler, Benjamin Haberfehlner, Georg Spolenak, Ralph Galinski, Henning |
| contents | Plasmons can drive chemical reactions by directly exciting intramolecular transitions. However, strong coupling of plasmons to single molecules remains a challenge as ultra-small mode volumes are required. In the presented work, we propose Cu-Pd plasmonic network metamaterials as a scalable platform for plasmon-assisted catalysis. Due to the absence of translational symmetry, these networks provide a unique plasmonic environment featuring a large local density of optical states and an unparalleled density of hotspots that effectively localizes light in mode volumes $V<8\cdot10^{-24}$ m$^3$. Catalytic performance tests during CO$_2$ conversion reveal production rates of up to 4.3$\cdot$10$^2$ mmol g$^{-1}$h$^{-1}$ and altered reaction selectivity under light illumination. Importantly, we show that the selectivity of the catalytic process can be tuned by modifying the network's chemical composition, offering a versatile approach to optimize reaction pathways. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_22986 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | CO$_2$ Conversion in Cu-Pd based Disordered Network Metamaterials with Ultra-Small Mode Volume Wohlwend, Jelena Wipf, Oliver Kiwic, David Käch, Siro Mächler, Benjamin Haberfehlner, Georg Spolenak, Ralph Galinski, Henning Optics Applied Physics Plasmons can drive chemical reactions by directly exciting intramolecular transitions. However, strong coupling of plasmons to single molecules remains a challenge as ultra-small mode volumes are required. In the presented work, we propose Cu-Pd plasmonic network metamaterials as a scalable platform for plasmon-assisted catalysis. Due to the absence of translational symmetry, these networks provide a unique plasmonic environment featuring a large local density of optical states and an unparalleled density of hotspots that effectively localizes light in mode volumes $V<8\cdot10^{-24}$ m$^3$. Catalytic performance tests during CO$_2$ conversion reveal production rates of up to 4.3$\cdot$10$^2$ mmol g$^{-1}$h$^{-1}$ and altered reaction selectivity under light illumination. Importantly, we show that the selectivity of the catalytic process can be tuned by modifying the network's chemical composition, offering a versatile approach to optimize reaction pathways. |
| title | CO$_2$ Conversion in Cu-Pd based Disordered Network Metamaterials with Ultra-Small Mode Volume |
| topic | Optics Applied Physics |
| url | https://arxiv.org/abs/2410.22986 |