Copper Catalyst Before and After Oxidation (IMAGE)

DOE/Lawrence Berkeley National Laboratory

Copper Catalyst Before and After Oxidation

Caption

These scanning electron microscopy images show the copper catalyst structure at different stages. (a) The catalyst prior to running any reactions. The cube structures on the surface are a result of the oxide. (b) What the catalyst looks like after running the CO reduction chemistry; all the oxygen is gone. (c) The catalyst after intentionally adding oxygen back to the metal as a way of recovering the performance of the catalyst. Copper oxide has formed in small nanoparticles on top of the smooth copper metal surface.

Credit

Lee et al./ACS Catalysis

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