Improvement of product selectivity in bicarbonate reduction into formic acid on a tin-based catalyst by integrating nano-diamond particles

Ion‐Enhanced Conversion of CO2 into Formate on Porous Dendritic Bismuth Electrodes with High Efficiency and Durability

“…The absence of these peaks under N 2 purging ( Figure S8) suggestst hat they are associated with CO 2 reduction.Notably,the peaks gradually shiftedt oam ore positive potential with increasing KBC concentration,a sh as been notede lsewhere. [33] These peak shifts were similarly found even in the IR-corrected LSVs ( Figure S9). According to the pH speciation diagramf or bicarbonate,t he maximal fractiono fH CO 3 À occurs at pH % 8.4 (pK 1 = 6.35;p K 2 = 10.33).…”

“…The absence of these peaks under N 2 purging (Figure S8) suggests that they are associated with CO 2 reduction. Notably, the peaks gradually shifted to a more positive potential with increasing KBC concentration, as has been noted elsewhere . These peak shifts were similarly found even in the IR ‐corrected LSVs (Figure S9).…”

Integrated CO2capture and electrochemical upgradation: the underpinning mechanism and techno-chemical analysis

“…It was examined that a high Sn loading in the electrode surface leads to low efficiency in bicarbonate reduction due to particle agglomeration and the diminished effective surface area. 233…”

“…Even though several reports emphasized the reduction of CO 2 -saturated bicarbonate solution and claimed to develop a highly productive electrocatalyst, its industrialscale implementation is challenging because the electrochemical reduction of dissolved CO 2 in bicarbonate is conventionally not a part of the integrated CCU process. 228,233 However, it is crucial to engineer electrocatalysts in such a way that they facilitate direct bicarbonate reduction or push the bicarbonate-CO 2 equilibrium to liberate more CO 2 for its electrochemical conversion. Our focus is to highlight the effectiveness of electrocatalysts which are capable of reducing bicarbonate either directly or indirectly through reducing CO 2 .…”

“…It was examined that a high Sn loading in the electrode surface leads to low efficiency in bicarbonate reduction due to particle agglomeration and the diminished effective surface area. 233 Cu-based catalysts are also found to be promising in bicarbonate reduction. Kortlever et al have performed bicarbonate reduction in alkaline phosphate buffer using Cu-based electrodes and obtained formate as a major product.…”