Selectivity and activity modulation of electrocatalytic carbon dioxide reduction by atomically dispersed dual iron catalysts

Abstract

Through regulating the electronic environment of Fe active centers to modulate electrocatalytic CO2 reduction behavior, the advanced dual Fe2-site catalyst (Fe2 DAC) exhibiting CO current density (jCO) of 10 mA/cm2...

Boosting the Urea Synthesis Rate on Ni Single-Atom Catalysts: The Impact of Acetonitrile Electrolyte in the Tandem CO2 Reduction/Nucleophilic Addition Reaction

“…The well-resolved six-line hyperfine splitting can be observed within 40 s in electrolytes A and B. This is a typical EPR characteristic of the C-centered adduct (DMPO–CO 2 •– ). , The signal of the CO 2 •– intermediates disappeared after 50 s in electrolytes A and B. The decay rate of the CO 2 •– intermediates was evaluated by collecting the signal intensities of the CO 2 •– adduct with DMPO in electrolytes A and B at different times.…”

“…The absorption ). 43,44 The signal of the CO 2 •− intermediates disappeared after 50 s in electrolytes A and B. The decay rate of the CO 2…”

A synergic investigation of experimental and computational dual atom electrocatalysis for CO2 conversion to C1 and C2+ products

“…Liaw and coworkers used practical in operando spectroscopy to illustrate the factors responsible for intermediate stabilization in DACs. 86 The step thermolysis method was used for the synthesis of the Fe 2 /g-C 3 N 4 precursor followed by pyrolysis with N doped carbon black to form g-C 3 N 4 exempted Fe 2 DAC (Fig. 7a).…”

Interfacing Dense NiFe@N-Doped Carbon Nanotubes on a Ni Hollow Fiber as a High-Current-Density Gas-Penetrable Electrode for Selective CO2 Electroreduction

“…Recently, transition metal (TM)-based electrocatalysts (TM = Fe, Co, Ni, Cu, Zn, etc.) including N-doped carbon-coordinated TMs single atoms (TMs 1 /NC), encapsulated TMs (TMs@NC), and supported TM (TMs/NC) have been extensively investigated for the eCO 2 RR due to their high abundance and performance–price ratio. − Among them, TMs@NC, also known as chainmail catalysts, have shown high activity and durability in eCO 2 RR due to the synergistic effect of core TMs and carbon shells. − In this context, Zhuo and co-workers reported that a carbon nanotube-encapsulated Ni nanoparticle catalyst prepared by a one-step chemical vapor deposition (CVD) approach exhibits a high Faradaic efficiency (FE) of 90% for CO production at an applied potential of −0.77 V versus reversible hydrogen electrode (RHE). Xie and co-workers demonstrated that the F, N-codoped carbon-coated iron carbide nanoparticles also show exceptional performance toward the electroreduction of CO 2 to CO with a high FE of 97.7% and current density of 7.9 mA cm 2 at −0.7 V versus RHE.…”