Multi‐Shell Copper Catalysts for Selective Electroreduction of CO2 to Multicarbon Chemicals
Yukun Xiao,
Meng Wang,
Haozhou Yang
et al.
Abstract:Electrocatalytic CO2 reduction (CO2R) coupled with renewable electricity has been considered as a promising route for the sustainability transition of energy and chemical industries. However, the unsatisfactory yield of desired products, particularly multicarbon (C2+) products, has hindered the implementation of this technology. This work describes a strategy to enhance the yield of C2+ product formation in CO2R by utilizing spatial confinement effects. The finite element simulation results suggest that increa… Show more
“…Passing the *CO L absorbance maximum, CuDAT exhibits a more rapid decrease of the *CO band intensity than CuNPs, suggesting the accelerated rate for producing multi-carbon products. 42,43 Moreover, the *CO band on CuDAT appears at lower wavenumber, consolidating its favoured *CO adsorption (Fig. 3c).…”
Electrochemical CO2 reduction (CO2R) to valuable products provides a promising strategy to enable CO2 utilization sustainably. Here, we report the strategy of using Cu-DAT (3,5-diamino-1,2,4-triazole) as catalyst precursors for efficient...
“…Passing the *CO L absorbance maximum, CuDAT exhibits a more rapid decrease of the *CO band intensity than CuNPs, suggesting the accelerated rate for producing multi-carbon products. 42,43 Moreover, the *CO band on CuDAT appears at lower wavenumber, consolidating its favoured *CO adsorption (Fig. 3c).…”
Electrochemical CO2 reduction (CO2R) to valuable products provides a promising strategy to enable CO2 utilization sustainably. Here, we report the strategy of using Cu-DAT (3,5-diamino-1,2,4-triazole) as catalyst precursors for efficient...
“…3g). Chen et al 77 synthesized Cu nanoparticles with desired hollow multi-shell structures. Among them, the 4.4-shell Cu catalyst achieved a high selectivity of over 80% toward C 2+ products.…”
Section: Strategies For Improving Activity and Selectivitymentioning
It is widely established that the electroreduction of carbon dioxide on a copper surface yields a spectrum of alcohols and hydrocarbons. But the selectivity of Cu toward a certain product is extremely poor as it forms a variety of reduced products concurrently. Controlling selectivity and overall performance depends on the modification of the Cu site and local environment. This study depicts how the product selectivity can be switched from C1 to C2 and multicarbon products by systematic incorporation of secondary metal (Pd) into the Cu lattice. Upon releasing the structural ordering from intermetallic to alloy and then to bimetallic, a systematic enhancement on the formation of C2 products from CO2 has been observed. Real‐time in situ X‐ray absorption spectroscopy (XAS) study showed the potential dependent evolution of Pd─Cu and Cu─Cu bonds in different Pd‐Cu‐based catalysts. The detailed analysis of in situ IR and Raman also determined the adsorbed intermediate species and helped to identify the mechanism. Computational studies show the feasibility of multicarbon product formation on bimetallic catalysts compared to alloy and intermetallic catalysts. The current density and the activity of the CO2 electroreduction have been enhanced by the utilization of the flow cell in the gas diffusion electrode configuration.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.