Strategies to enhance the catalysis of CO2 reduction on Cu and Au surfaces
Ifan E.L. Stephens a
a Department of Materials, Imperial College London, United Kingdom, Prince’s Consort Road, South Kensington Campus, London, United Kingdom
Invited Speaker, Ifan E.L. Stephens, presentation 030
Publication date: 7th June 2020

The electrochemical reduction of CO2 provides a promising route to convert surplus electricity and a waste emission into sustainable fuels and chemicals. Au and Cu comprise the most promising metal catalysts for CO2 reduction, capable of producing valuable compounds such as CO, ethylene and ethanol.  I will briefly outline strategies to tune the catalytic performance of Au and Cu by (i) combining them with other metals1,2 and (ii) tailoring the morphology.3-5 We investigate extended surfaces of single crystal and polycrystalline electrodes, using electrochemical methods, gas chromatography, scanning tunnelling microscopy, and ultra high vacuum surface science methods.  I will also provide an outlook towards alternative catalytic systems, which may break free of the bottlenecks of pure metal surfaces.

1    Varela, A. S., Schlaup, C., Jovanov, Z. P., Malacrida, P., Horch, S., Stephens, I. E. L. & Chorkendorff, I. J. Phys. Chem. C 117, 20500, (2013).
2    Jovanov, Z. P., Hansen, H. A., Varela, A. S., Malacrida, P., Peterson, A. A., Nørskov, J. K., Stephens, I. E. L. & Chorkendorff, I. J. Catal. 343, 215, (2016).
3    Bertheussen, E., Hogg, T. V., Abghoui, Y., Engstfeld, A. K., Chorkendorff, I. & Stephens, I. E. L. ACS Energy Letters 3, 634, (2018).
4    Mezzavilla, S., Horch, S., Stephens, I. E. L., Seger, B. & Chorkendorff, I. Angew. Chem.-Int. Edit. 58, 3774, (2019).
5    Engstfeld, A. K., Maagaard, T., Horch, S., Chorkendorff, I. & Stephens, I. E. L. Chemistry-a European Journal 24, 17743, (2018).

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