Selective electrochemical CO₂ conversion to multicarbon alcohols on highly efficient N-doped porous carbon-supported Cu catalysts

Abstract

A schematic of selective electrochemical CO2 conversion to multicarbon alcohols on N-doped porous carbon-supported Cu catalysts via a two-site mechanism is shown.

Electrochemical Reduction of CO2 to CO by N,S Dual‐Doped Carbon Nanoweb Catalysts

“…The deconvolution of the N1sp eak revealed fourd ifferent bondings tates of Na toms at 398.3, 400.2,4 01.1, and 402.9 eV,c orresponding to pyridinic N, pyrrolic N, graphitic N, and oxidized N, respectively (Figure 3a and FigureS4a in the Supporting Information). [30,31] Four S2pp eaks Scheme1.Schematicillustration of the overall fabrication process for NSCNW catalysts. www.chemsuschem.org appeared at al ower binding energy,i nc ontrastt oN Ca nd NCNW,w hich indicated an S-free survey spectrum;t he spectrum of the NSCNW catalysts contained the deconvoluted S2p peaks;t he two peaks centered at 164.1 and1 65.3 eV were assigned to the S2p 1/2 and S2p 3/2 of thiophene-like S(C ÀSÀC), re-spectively,a nd the other two peaks at 167.6 and 168.8 eV corresponded to oxidized S( C ÀSO x ) ( Figure 3b and Figure S4 bi n the Supporting Information), [32,33] exhibiting the successful incorporation of Sa toms in N-doped carbons.…”

Comparing Molecular Mechanisms in Solar NH3 Production and Relations with CO2 Reduction

“…In multi-carbon CO 2 RR, a large range of mechanistic hypotheses have also been indicated sometimes based on theoretical modeling [ 37 , 72 , 73 , 74 , 92 , 93 , 94 , 95 , 96 , 97 , 98 , 99 , 100 , 101 ]. The proposals are different in terms of the mechanism, type of intermediates and active sites.…”

“…The proposals are different in terms of the mechanism, type of intermediates and active sites. For example, Han et al [ 101 ] indicate Cu catalytic sites sitting at defects of N-doped porous carbon materials as being effective. The pyridinic N species react with CO 2 to produce CO and, with Cu catalytic sites, act cooperatively to produce C 2 H 5 OH and C 3 H 7 OH via a two-site mechanism.…”

Nitrogen-rich metal-organic framework mediated Cu–N–C composite catalysts for the electrochemical reduction of CO2

“…As a result, the Zn-center in ZIF-8 was often ionic exchanged by/doped with other metals of Co, Ni, Fe, or evaporated away. Up to now, there remain undeveloped on the Cu-N-C system [44][45][46][47], probably due to the lack of ideal precursor and the sensitivity of Cu to be oxidized, as well as the difficulties in the synthesis of small size NPs [48]. Very recently, an interesting strategy was employed in Kim's group in which two kinds of catalytic sites with different functions were combined to facilitate the CO 2 ER [47].…”

“…Up to now, there remain undeveloped on the Cu-N-C system [44][45][46][47], probably due to the lack of ideal precursor and the sensitivity of Cu to be oxidized, as well as the difficulties in the synthesis of small size NPs [48]. Very recently, an interesting strategy was employed in Kim's group in which two kinds of catalytic sites with different functions were combined to facilitate the CO 2 ER [47]. One site is the pyridinic N, acting as the CO-producing site, and the other site is the Cu NPs with the effect on promoting the reaction between *C1 or *C2 intermediates and *CO for the generation of the longer carbon product.…”