AI Article Synopsis
- The study highlights a method to convert carbon monoxide (CO) into valuable multi-carbon compounds, addressing energy and climate challenges.
- Researchers developed a modular synthetic approach using supramolecular cages at molecular-materials interfaces for this electrochemical process.
- The resulting heterobimetallic cavities achieved a high faradaic efficiency (FE = 83% with 57% to ethanol) and current density (1.34 mA/cm) at a specific potential, outperforming traditional copper surfaces in selectivity and activity.
Article Abstract
Conversion of carbon monoxide (CO), a major one-carbon product of carbon dioxide (CO) reduction, into value-added multicarbon species is a challenge to addressing global energy demands and climate change. Here we report a modular synthetic approach for aqueous electrochemical CO reduction to carbon-carbon coupled products via self-assembly of supramolecular cages at molecular-materials interfaces. Heterobimetallic cavities formed by face-to-face coordination of thiol-terminated metalloporphyrins to copper electrodes through varying organic struts convert CO to C2 products with high faradaic efficiency (FE = 83% total with 57% to ethanol) and current density (1.34 mA/cm) at a potential of -0.40 V vs RHE. The cage-functionalized electrodes offer an order of magnitude improvement in both selectivity and activity for electrocatalytic carbon fixation compared to parent copper surfaces or copper functionalized with porphyrins in an edge-on orientation.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5620982 | PMC |
| http://dx.doi.org/10.1021/acscentsci.7b00316 | DOI Listing |
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