In this talk, I will discuss our recent progress on the development of heterometallic seed-mediated synthesis for monodisperse penta-twinned Cu nanorods using Au nanocrystals as seeds. The nanorod aspect ratio can be readily adjusted from 2.8 to 13.1 by varying the molar ratio between Au seeds and Cu precursor, resulting in narrow longitudinal plasmon resonances tunable from 762 to 2201 nm. The growth pathway features coevolving shape and composition whereby nanocrystals become progressively enriched with Cu concomitant with nanorod growth. The nanorods possess active surface sites for the high-rate electrochemical reduction of carbon dioxide into liquid fuels such as ethanol and n-propanol.

Chemical design of colloidal copper-based nanorod electrocatalyst

ACS Spring 2022

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