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Microwave‐Assisted Synthesis of Copper‐Based Electrocatalysts for Converting Carbon Dioxide to Tunable Syngas
Author(s) -
Zeng Juqin,
Bejtka Katarzyna,
Di Martino Gaia,
Sacco Adriano,
Castellino Micaela,
Re Fiorentin Michele,
Risplendi Francesca,
Farkhondehfal M. Amin,
Hernández Simelys,
Cicero Giancarlo,
Pirri Candido F.,
Chiodoni Angelica
Publication year - 2020
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201901730
Subject(s) - syngas , copper , selectivity , catalysis , carbon dioxide , materials science , chemical engineering , microwave , inorganic chemistry , chemistry , metallurgy , organic chemistry , engineering , physics , quantum mechanics
Copper (Cu)‐based materials for efficient CO 2 conversion to adjustable syngas are reported. We employ an energy‐efficient microwave‐assisted route to synthesize copper/copper oxides with different structures and morphologies. The initial oxidation state of the copper on the surface significantly influences the performance of the materials in the CO 2 reduction reaction (CO 2 RR). On the as‐prepared material surface, a high content of Cu 2 O improves the selectivity toward CO and consequently the catalyzed CO 2 RR produce a syngas with a low H 2 /CO ratio, while the CuO performs poorly. In particular, Cu 2 O particles with a cubic shape show the highest selectivity for the CO formation. The superior catalytic activity of the Cu 2 O cubes for the CO 2 RR is attributed to the surface roughening under potential, which offers abundant electrochemically active sites and facilitates mass transport.