Electrochemical reduction of carbon dioxide on hydrogenstoring materials

pH effect on electrocatalytic reduction of CO2 over Pd and Pt nanoparticles

“…At −1.19 V (vs. RHE), the maximum current density of 12.1 mA cm −2 for CO production is reached at pH of 2.2. Different to the reported results on polycrystalline Pd electrodes [16][17][18], CO 2 is reduced to CO over Pd NPs with a high Faradaic efficiency. This result can be well explained by size-dependent electrocatalytic reduction of CO 2 over Pd NPs [19].…”

“…3e). The absorbed hydrogen in Pd bulk could suppress HER and facilitate CO 2 reduction [16]. In addition, the pH change from 1.5 to 2.2 results in positive shifts on the absorbed hydrogen peak of Pd NPs (Fig.…”

Highly selective palladium-copper bimetallic electrocatalysts for the electrochemical reduction of CO2 to CO

“…Furthermore, one point should be noticed that the mass activity of Pd NPs was measured based on porous electrode, which can be directly used in practical compact electrolysis cells. Moreover, compared with the bulk Pd electrode, the Pd-based catalysts consisted of the bi-or mono-metallic nanoparticles had higher electrocatalytic activity towards CO 2 reduction, which was quite different from those in bulk metals, such as FE CO < 6% over Pd wire electrode [36] and FE CO < 25% over Pd wire electrode modified with Cu at all different copper coverage [37]. Hence, these PdCu/C nanocatalysts displayed significant potential in practical applications of the CO 2 electrocatalytic reduction process.…”

Organic molecules as mediators and catalysts for photocatalytic and electrocatalytic CO2reduction

“…This was deemed to be unlikely because earlier experiments showed that at the hydrogenated Pd electrode, CO 2 was reduced to HCOOH or CO, but not to CH 3 OH. 43 It was later found that Pt could also be used as an electrode, and formic acid and formaldehyde were identified as intermediate products. 41 In Galvanostatic electrolysis experiments at 40 mA cm À2 (potential not reported), the Faradaic yields for HCOOH and CH 3 OH formation were 11% and 22%, respectively.…”