CO<sub>2</sub> Conversion in Cu-Pd Based Disordered Network Metamaterials with Ultrasmall Mode Volumes.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 39978929.
- Also identified by DOI 10.1021/acs.nanolett.4c05426 and PMC identifier 11907637.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
Plasmons can drive chemical reactions by directly exciting intramolecular transitions. However, strong coupling of plasmons to single molecules remains a challenge as ultrasmall mode volumes are required. In the presented work, we propose Cu-Pd plasmonic network metamaterials as scalable platforms 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 <i>V</i> < 8 × 10<sup>-24</sup> m<sup>3</sup>. Catalytic performance tests during CO<sub>2</sub> conversion reveal production rates of up to 4.3 × 10<sup>2</sup> mmol g<sup>-1</sup> h<sup>-1</sup> 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.