Abstract
Many of the existing electrochemical catalysts suffer from poor selectivity, instability, and low exchange current densities. These shortcomings call for a comprehensive exploration of the catalytic processes at the fundamental nanometer length scale levels. Here we exploit infrared (IR) nanoimaging and nanospectroscopy to directly visualize catalytic reactions on the surface of Cu2O polyhedral single crystals with nanoscale spatial resolution. Nano-IR data revealed signatures of this common catalyst after electrochemical reduction of carbon dioxides (CO2). We discuss the utility of nano-IR methods for surface/facet engineering of efficient electrochemical catalysts.
Original language | English (US) |
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Pages (from-to) | 576-580 |
Number of pages | 5 |
Journal | ACS Photonics |
Volume | 7 |
Issue number | 3 |
DOIs | |
State | Published - Mar 18 2020 |
Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2020 American Chemical Society.
Keywords
- CO reduction
- CuO catalysis
- infrared nanospectroscopy
- s-SNOM
- scanning nano-optical imaging