Effect of morphology and structure of CuTCPP nanomaterials on the electrocatalytic CO2 reduction to methane and ethylene

Electrocatalytic and Photocatalytic CO2 Methanation: From Reaction Fundamentals to Catalyst Developments

“…[78] Experiments and DFT calculations show that the high CO 2 electroreduction activity depends on the exposure of active sites, while the CH 4 selectivity is attributed to the higher number of surface CuÀ O 4 sites. [78] For the case of CuO nanosheets, in situ and ex situ TEM studies (Figure 3c) have shown that, via controlling the potential, the CuO nanosheets were broken up within 10-20 min, which might be limited by the diffusion of Cu species, and finally aggregated into branched and dendritic copper structures. [73] The stepped Cu (210), namely, 2 (100) × (110) facets formed during the above process, were highly selective for CH 4 , and the *CH 3 intermediate species were preferentially formed at relatively lower smaller step positions.…”

“…[77] Sun et al investigated the CO 2 electroreduction performance of Cu TCPP nanoparticles, nanorods, nanosheets, and nanoflowers. [78] Cu TCPP nanoflowers with more CuÀ O 4 sites were more stable than nanosheets, with a methane selectivity of 61.0 % at À 1.3 V vs. RHE. [78] Experiments and DFT calculations show that the high CO 2 electroreduction activity depends on the exposure of active sites, while the CH 4 selectivity is attributed to the higher number of surface CuÀ O 4 sites.…”

“…[78] Cu TCPP nanoflowers with more CuÀ O 4 sites were more stable than nanosheets, with a methane selectivity of 61.0 % at À 1.3 V vs. RHE. [78] Experiments and DFT calculations show that the high CO 2 electroreduction activity depends on the exposure of active sites, while the CH 4 selectivity is attributed to the higher number of surface CuÀ O 4 sites. [78] For the case of CuO nanosheets, in situ and ex situ TEM studies (Figure 3c) have shown that, via controlling the potential, the CuO nanosheets were broken up within 10-20 min, which might be limited by the diffusion of Cu species, and finally aggregated into branched and dendritic copper structures.…”