Rotating ring-disk voltammetry: Diagnosis of catalytic activity of metallic copper catalysts toward CO2 electroreduction

Electrochemical CO2 reduction on nanostructured metal electrodes: fact or defect?

“…28 Finally, some studies have employed rotating ring disk electrodes (RRDE) to probe the electroreduction of CO 2 under mass transfer controlled conditions. [88][89][90] By employing this technique, products that are formed on the disk electrode can be detected on the ring electrode by electro-oxidation. Fig.…”

Real‐Time Carbon Monoxide Detection using a Rotating Gold Ring Electrode: A Feasibility Study

“…[16][17] Recent progress has appreciated the use of RRDE in the gas-evolving water oxidation reaction, [18][19] whereas only very limited success is witnessed in the CO 2 RR. [10,20] The key challenges reside at the real-time product discrimination, signal interference and product collection efficiency, which are immediate issues from using a Pt ring electrode, although some plausible solutions to the problems are left undiscussed. It hence must be a question of many: can commercial RRDE be useful for real-time product monitoring in electrochemical CO 2 RR?…”

Visible-light-driven CO2reduction on dye-sensitized NiO photocathodes decorated with palladium nanoparticles

“…40,70,71 To conrm the formation of CO as the main photoelectrochemical reduction product at the hybrid FTO/NiO-P1/nPd(x1) photocathode, anodic stripping-type voltammetric experiments were performed, referring to previous studies. 18,72 Here, an additional glassy carbon working electrode with deposited nPt (loading 100 mg cm À2 ) was placed in the vicinity of the photocathode. Aer long-term photoelectrochemical reduction of CO 2 at the FTO/NiO-P1/nPd(x1) electrode, the photogenerated reaction products were adsorbed and pre-concentrated on the surface of the GC/nPt electrode (see experimental details in the ESI † and the choice of potentials).…”

“…7). Although the latter stripping step can also be performed in near-neutral Na 2 SO 4 electrolyte, 72 voltammetric patterns characteristic of electrocatalytic oxidation of the adsorbates of small organic molecules are more unequivocal in acid medium. The dashed line in Fig.…”