Growth direction and exposed facets of Cu/Cu2O nanostructures affect product selectivity in CO2 electroreduction

Electro‐Synthesis of Organic Compounds with Heterogeneous Catalysis

“…Castro‐Castillo et al exploited the effect of differential orientations of Cu facets on the eCO 2 RR product selectivity (Figure 17b ). [ 171 ] A Cu nanostructure with predominant (111) orientation yields 66.57% FE for methane at an applied potential of −1.3 V (vs RHE). Iwanow et al showed how they used a thermal oxidation process of Cu‐containing deep eutectic solvent (DES) to make C‐doped CuO 2 catalysts in Figure 17c .…”

“…Reproduced with permission. [ 171 ] Copyright 2021, Elsevier. c) Selectivity of C 2 and C 3 products in eCO 2 RR on carbon‐doped copper oxide catalysts.…”

Reduced Graphene Oxide Overlayer on Copper Nanocube Electrodes Steers the Selectivity Towards Ethanol in Electrochemical Reduction of Carbon Dioxide

“…The electrochemically active surface area was determined using the double layer capacitance method reported in the literature. [60,61] Cyclic voltammograms of the Cu Ncbs, Cu NcbsÀ rGO-60, and Cu NcbsÀ rGO-120 were taken at different scan rates in 0.1 M KHCO 3 electrolyte purged with argon in a range where no faradaic current was observed. A Pt wire was used as a counter electrode and an Ag/AgCl electrode as the reference electrode.…”

Tuning the Interactions in CuO Nanosheet-Decorated CeO2 Nanorods for Controlling the Electrochemical Reduction of CO2 to Methane or Ethylene

“…Despite the great progress in producing simple C 1 products (e.g., CO and formate) from the CO 2 reduction reaction (CO 2 RR) made in many years, deep reduction of CO 2 to more valuable C 2+ products is significantly restricted. , As is widely accepted, the dimerization step is the rate-determining step (RDS) in intricate multistep pathways for C 2+ product formation, which is highly related to the adsorbed CO (*CO) surface coverage of catalysts. , To date, due to the appropriate intermediate binding energy for *CO, Cu-based catalysts are known as the best choices for C 2+ product formation. , However, with multiple pathways competing (particularly unmanageable hydrogenation/dimerization of *CO), the poor selectivity and insufficient stability of Cu-based catalysts are far from satisfactory . To overcome these problems, tremendous efforts have been devoted to control the pathway of *CO dimerization, such as optimizing crystal structures, regulating oxidation states, introducing defects, elemental doping, , alloying, , and engineering interactions. , Even so, developing advanced Cu-based catalysts with high CO 2 RR performance and clarifying the underlying regularities are still challenging topics.…”

“…6,7 However, with multiple pathways competing (particularly unmanageable hydrogenation/dimerization of *CO), the poor selectivity and insufficient stability of Cu-based catalysts are far from satisfactory. 4 To overcome these problems, tremendous efforts have been devoted to control the pathway of *CO dimerization, such as optimizing crystal structures, 8 regulating oxidation states, 9 introducing defects, 10 elemental doping, 11,12 alloying, 13,14 and engineering interactions. 15,16 Even so, developing advanced Cu-based catalysts with high CO 2 RR performance and clarifying the underlying regularities are still challenging topics.…”