Electrochemical Engineering of Nanoporous Materials

Abstract

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Cu2O/CuS Nanocomposites Show Excellent Selectivity and Stability for Formate Generation via Electrochemical Reduction of Carbon Dioxide

“…Meanwhile, oxygen gas was generated on the anode. We believe that the reaction between Cu, oxygen, and water leads to the generation of Cu­(OH) 2 , which consequently had been reduced to Cu 2 O during the thermal reduction process Figure shows the structural characterization data collected from the Cu 2 O/CuS samples tested for CO 2 RR at −0.9 V vs RHE for 6 h. As shown in Figures b and c, the surface of Cu gauze is uniformly covered with nanoparticles.…”

“…We believe that the reaction between Cu, oxygen, and water leads to the generation of Cu(OH) 2 , 20 which consequently had been reduced to Cu 2 O during the thermal reduction process. 21 Figure 1 shows the structural characterization data collected from the Cu 2 O/CuS samples tested for CO 2 RR at −0.9 V vs RHE for 6 h. As shown in Figures 1b and 1c We performed XPS analysis to probe the chemical environment of the Cu 2 O/CuS surface (Figure 2). In the Cu 2p XPS spectrum, the peaks centered at 934.3 and 954.3 eV, as well as the shake-up peaks between 940 eV and 950 eV, indicate the presence of Cu 2+ .…”