Photoelectrocatalytic reduction of carbon dioxide to methanol at cuprous oxide foam cathode

Abstract

Photoelectrocatalytic performance of Cu2O foam electrodes for reduction of CO2 to methanol depends largely on exposed Cu2O{111} facets.

Sustainable Recovery of CO2 by Using Visible-Light-Responsive Crystal Cuprous Oxide/Reduced Graphene Oxide

“…It is noteworthy that the dominant product of methanol may be caused by the exposed (110) facets of Cu 2 O on which hydrogen may perform the addition to the oxygen atom in the bicarbonate rather than a carbon atom. This finding is similar to the pervious study [62]. In terms of photogenerated holes, the evolution of oxygen gas (ca.…”

Oleic acid induced tailored morphological features and structural defects in CuO for multifunctional applications

“…H 2 O (E θ (H 2 O/O 2 ) = 0.816 V vs. NHE) satisfactorily fulfill the half-reactions leading to the occurrence of CO 2 reduction and H 2 O oxidation at the same time 62. The conduction and valence band of single structured CuO are positioned at -0.95 and 0.8 eV vs. NHE 63. Based on the band potential values, hexagonal CuO sheets with a bandgap of 1.75 eV on their own can completely carry out CO 2 photoconversion to CH 3 OH as presented in the current report.…”

Photoelectrochemical Reactors for CO2 Utilization

“…Yuan el al. 119 proposed the photoelectroreduction of CO2 using a Cu2O photocahode and a graphite sheet as dark anode, obtaining a concentration and FE for CH3OH formation of 1.41 mmol and 29.1%, respectively, after 1.5 h of operation at 1. (1.1 V extra) was far higher than that individually electro-or-photo-catalytic reduction.…”

“…Yuan el al. 119 proposed the photoelectroreduction of CO 2 using a Cu 2 O photocathode and a graphite sheet as dark anode, obtaining a concentration and FE for CH 3 OH formation of 1.41 mmol and 29.1%, respectively, after 1.5 h of operation at 1.5 V vs SCE in a single compartment cell with an irradiation of 100 mW•cm −2 emitted from a Xe lamp. The formation rate of CH 3 OH was 23.5 μmol•cm −2 •h −1 .…”