Boosting CO desorption on dual active site electrocatalysts for CO2 reduction to produce tunable syngas

Synergetic Dual‐Atom Catalysts: The Next Boom of Atomic Catalysts

“…CO 2 RR is a promising way to consume the external CO 2 and simultaneously offer value‐added products, providing a strategy for the sustainable development of carbon balance. In CO 2 RR, CO 2 can be reduced to CO, [96] methanol, [97] alcohol, [98] formic acid, [99] synergy gas, [100] hydrocarbons, [101] and other products [102] . In most studies of DACs, the reduction of CO 2 to CO is the most common reaction pathway [103] .…”

Synergies of Atomically Dispersed Mn/Fe Single Atoms and Fe Nanoparticles on N-Doped Carbon toward High-Activity Eletrocatalysis for Oxygen Reduction

“…Generally, transition metals with unoccupied three-dimensional (3d) orbitals have less locality in regulating external electrons and provide more conduction electrons, thus reducing the O–O energy and enhancing the catalyst–intermediate charge transfer, which improve their potential to promote O 2 reduction. − Among them, Fe III , a typical transition metal, has a variety of states due to differences in coordination environments and shows different forms of spin (low spin, medium spin, and high spin) . As reported, d z 2 electrons in the medium-spin state have intermediate spintronic configurations that can penetrate the antibonding π orbital of oxygen, resulting in excellent ORR activity of Fe-based electrocatalysts. , Recently, synergistic sites (diatoms, metal clusters/NPs) were explored and introduced to regulate the electronic structure of Fe atoms in the Fe-N x center and thereby to improve catalytic activity. , Gao developed an electrocatalyst (Fe NPs /Fe–N 4 /C) on a N-doped porous carbon substrate and containing both Fe single atoms (SAs) and Fe NPs, which can effectively reduce the adsorption energy and synergically improve the catalytic activity . Sun reported a new FeCo–N–C catalyst with enhanced catalytic activity and stability, in which the strong interaction between highly active metal-NPs and metal–N 4 composite sites contributes to ORR by stimulating O–O .…”

“…21,26 Recently, synergistic sites (diatoms, metal clusters/NPs) were explored and introduced to regulate the electronic structure of Fe atoms in the Fe-N x center and thereby to improve catalytic activity. 27,28 Gao developed an electrocatalyst (Fe NPs /Fe−N 4 /C) on a N-doped porous carbon substrate and containing both Fe single atoms (SAs) and Fe NPs, which can effectively reduce the adsorption energy and synergically improve the catalytic activity. 28 Sun reported a new FeCo−N−C catalyst with enhanced catalytic activity and stability, in which the strong interaction between highly active metal-NPs and metal−N 4 composite sites contributes to ORR by stimulating O−O.…”

“…27,28 Gao developed an electrocatalyst (Fe NPs /Fe−N 4 /C) on a N-doped porous carbon substrate and containing both Fe single atoms (SAs) and Fe NPs, which can effectively reduce the adsorption energy and synergically improve the catalytic activity. 28 Sun reported a new FeCo−N−C catalyst with enhanced catalytic activity and stability, in which the strong interaction between highly active metal-NPs and metal−N 4 composite sites contributes to ORR by stimulating O−O. 29 Therefore, together with the above discussion, we expect to introduce atomically dispersed Mn with the same occupied 3d orbital of Fe and to construct Mn/ Fe dual single atoms in N-doped carbonaceous complexes, which also play a synergistic role with Fe NPs.…”

Toward economical application of carbon capture and utilization technology with near-zero carbon emission

“…Electrochemical CO 2 reduction (eCO 2 R) has attracted much attention as an alternative route for sustainable production of CO or syngas [5][6][7][8] . eCO 2 R provides a pathway for achieving net-zero emission during syngas production by utilizing renewable energy.…”