AI Article Synopsis
- Developing stable and efficient electrocatalysts for CO reduction is crucial for achieving a carbon-neutral energy cycle.
- New methods are necessary to prioritize the desired CO reduction reaction over the competing hydrogen evolution reaction when applying electric input.
- This study shows that space confinement within gaps of gold or silver nanoparticles enhances the efficiency of CO reduction by stabilizing the *COOH intermediate while having little impact on the hydrogen reaction intermediate, *H.
Article Abstract
Developing electrocatalysts that are stable and efficient for CO reduction is important for constructing a carbon-neutral energy cycle. New approaches are required to drive input electricity toward the desired CO reduction reaction (CORR) rather than the competitive hydrogen evolution reaction (HER). In this study, we have used quantum mechanics to demonstrate that the space confinement formed in the gaps of adjacent gold or silver nanoparticles can be used to improve the Faradaic efficiency of CORR to CO. This behavior is due to the space confinement stabilizing *COOH, which is the key intermediate in the CORR. However, space confinement has almost no effect on *H, which is the key intermediate in the HER. Possible experimental approaches for the preparation of this type of gold or silver electrocatalyst have been proposed.
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| http://dx.doi.org/10.1021/acs.jpclett.0c00082 | DOI Listing |
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