Selective carbon dioxide electroreduction to ethylene and ethanol by core-shell copper/cuprous oxide

[Display omitted] Developing an effective catalyst to reduce carbon dioxide (CO2) to value-added C2+ products is a key challenge for CO2 utilization. Here we report a core-shell copper with native oxide (Cu@Cu2O) catalyst featuring a thin native oxide layer on the surface grown under ambient conditi...

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Bibliographic Details
Published in:Journal of colloid and interface science 2019-09, Vol.552, p.426-431
Main Authors: Shang, Longmei, Lv, Ximeng, Shen, Hao, Shao, Zhengzhong, Zheng, Gengfeng
Format: Article
Language:English
Subjects:
CO2 reduction
Copper
Electrocatalyst
Faradaic efficiency
Native oxide
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Summary:[Display omitted] Developing an effective catalyst to reduce carbon dioxide (CO2) to value-added C2+ products is a key challenge for CO2 utilization. Here we report a core-shell copper with native oxide (Cu@Cu2O) catalyst featuring a thin native oxide layer on the surface grown under ambient conditions. The Cu(I) oxide species on Cu@Cu2O surface remained relatively stable against reduction under CO2 electroreduction condition, and the synergism between surface Cu+ and Cu0 in Cu@Cu2O contributed to boosting its efficiency and selectivity toward C2 products. This Cu@Cu2O catalyst achieved an excellent selectivity (∼50% at −1.0 V vs reversible hydrogen electrode) for C2 (ethylene and ethanol) production.
ISSN:0021-9797
1095-7103
DOI:10.1016/j.jcis.2019.05.073