Selective electrochemical reduction of CO2 to ethylene at a three-phase interface on copper(I) halide-confined Cu-mesh electrodes in acidic solutions of potassium halides

Reactivity of Copper Electrodes towards Functional Groups and Small Molecules in the Context of CO2 Electro-Reductions

“…Formaldehyde (25) in the experiment was rapidly reduced and fully converted to methanol (26). Noteworthy, no other products were observed.…”

“…Copper-catalyzed CO 2 reduction to hydrocarbons was first reported by Hori in 1985 [10]. In the following decades, publications using copper electrodes [11][12][13][14][15][16][17], copper oxide electrodes [18][19][20][21], copper-containing perovskites [22], oxide-supported copper catalysts [23], halide-derived copper catalysts [24][25][26][27], copper-based alloys [28], copper-based metal-organic frameworks [29], molecular copper complexes [30], as well as alternative systems [5,[31][32][33][34][35][36] vastly increased. Also pyridine-based co-catalysis known from Pd electrodes [37] could recently be transferred to copper-based systems [38].…”

Electrochemical specific adsorption of halides on Cu 111 , 100 , and 211 : A Density Functional Theory study

“…At the interface, the position of solvent molecules and distribution of ions strongly depend on the applied potential, the structure and composition of the electrode, identity and concentration of the ions, and solvent. Halide ions in an aqueous electrolyte solution can affect the rate of copper corrosion [6], planarization [7,8], and catalytic reactions occurring on a copper electrocatalyst surface [9][10][11][12].…”

“…The specific adsorption of chloride [25], bisulfate, sulfate, and organic sulfonate ions [26] to platinum electrodes affect the rate of the oxygen reduction reaction [25,27]. Halide anions can affect the rate and selectivity of carbon dioxide electroreduction over copper electrodes [9][10][11][12]. The identity of the halide strongly influences the selectivity and the kinetics of hydrocarbon formation [12].…”

Electrocatalysis of carbon dioxide with hemin and hemin-coated latex

“…Porphyrin complexes increased the current efficiency for the reduction of carbon dioxide from 42% to 86% by an increase in carbon dioxide pressure under 20 atm [6]. The successful reduction of carbon dioxide might yield a potential source for C1 feedstock [7][8][9].…”