Electrochemical behavior of CO 2 reduction on palladium nanoparticles: Dependence of adsorbed CO on electrode potential

Remote Ligand Modifications Tune Electronic Distribution and Reactivity in Site-Differentiated, High-Spin Iron Clusters: Flipping Scaling Relationships

“…This indicates that 1 NMe2 has both the lowest K 1 and highest K 2 values, as anticipated on the basis of Figure C. For comparison, previous studies have shown that CO binding constants often increase as reduction potentials decrease, , which is attributed to the π-acidity of CO. Thus, the observation of the opposite trend in the formation constants for 1 R -CO (R = CF 3 , H, OMe) is notable, especially since the donor strength of the bridging imidazolate was found to be crucial for enabling CO binding to 1 H in comparison to structurally homologous clusters with less donating pyrazolate ligands …”

Enhanced catalytic activity of Au core Pd shell Pt cluster trimetallic nanorods for CO2 reduction

“…According to the literature, CO 2 was not easily reduced to CO on the separate Pd sites. 30 As a result, the B and C Pd-Pt bridge sites were the possible active centres for CO 2 reduction. The B and C sites reached their maximum density when the Pt coverage was about 0.5, which caused the highest catalytic activity.…”

Electrochemical study of carbon dioxide reduction at copper–palladium nanoparticles: Influence of the bimetallic composition in the CO poisoning tolerance

“…On account of the competition between CO2RR and H at active catalytic sites, the Hrelated signals (C, Cβ, A, and HER) decrease progressively with the number of CV cycles [23,24]. In Figure 8C, the peak A, is totally suppressed after 9 scans, and A1 and A1´ merge into a single peak, probably because of a degradation of the catalyst surface.…”

“…These peaks have been attributed to the reduction of CO2 to CO or "CO-like" intermediates (multibonded CO radicals, such as (HCOO), CHO, C(OH)2 and CHx [23][24][25]) that remain attached to the catalyst surface and inhibit the reaction. In the case of Cu, CO-like intermediates can be further reduced at more negative potentials to hydrocarbons and alcohols [25], but in the case of Pd they eventually lead to the deactivation of the surface bimetallics.…”

“…According to the literature, these peaks are due to CO stripping [24,27]. They are attributed to (i) "CO-like" intermediates (CO and multibonded CO radicals) that desorb at different potentials [24] and (ii) two different Pd sites (terraces and edges) where CO is adsorbed weakly and strongly, respectively. This last hypothesis has been supported by DFT studies [27,32].…”