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

Abstract

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Photoelectrochemical Reduction of CO2 at Poly(4‐Vinylpyridine)‐Stabilized Copper(I) Oxide Semiconductor: Feasibility of Interfacial Decoration with Palladium Cocatalyst

“…Here, the reaction selectivity is combined with the reasonable activity and stability of the working photoelectrode. Finally, although a number of conventional electrocatalytic systems utilizing combinations of nanoparticles of copper and palladium were proposed as bimetallic nanostructures for CO 2 RR, [ 84–90 ] the major contribution of the current study concerns the development of robust and fairly selective photoelectrochemical system with nanostructured palladium cocatalyst. Obviously, the present hybrid photoelectrode is not as yet the “perfect” semiconducting system/liquid interface [ 91 ] for CO 2 RR but further research is in progress.…”

Factors Influencing the Performance of Copper-Bearing Catalysts in the CO2 Reduction System

“…138,242 Compared with single-metal catalysts, alloy catalysts often have some unique catalytic properties. 93,94,112,113,134 On the one hand, the alloying of the two metals can induce the reconstruction of the electronic structure of the metals, and the valence electrons rearrange in the new potential energy field produced by the alloying to produce electronic effects. On the other hand, the doped guest metal will destroy the surface atomic continuity of the original parent metal, in order to reduce the number of multiple adsorption sites.…”

“…The products of the CO 2 RR are mainly divided into C 1 products (CO, methanol, CH 4 , HCOOH, etc. ) − and C 2 + products (C 2 H 4 , EtOH, C 2 H 6 , CH 3 COOH, etc.) .…”

Insights into the Voltammetry of Cavity Microelectrodes Filled with Metal Powders: The Value of Square Wave Voltammetry

“…Since their introduction in the 1990s, Cavity Microelectrodes (CMEs) have gained interest as practical tools for the electrochemical study of finely dispersed materials of application in several fields, such as energy storage, catalyst characterization, corrosion or biological matter, among others [1–7] . Their key advantages compared to classical powder supports are: (i) no addition of external reagents ( i. e ., binders, carbon) that can introduce their own contribution to the electrochemical response, (ii) use of minute amounts of material (few tens of ng), which are often synthetized in small quantities by complex synthetic routes, and (iii) low distorted voltammetric signals by the ohmic drop, thanks to their micrometric size and low associated current.…”

“…were able to relate the charge measured for hydrogen electrosorption on Pt/C and IrO 2 ‐SnO 2 composites to the quantity of material contained in the cavity, allowing a rapid screening of their intrinsic properties under different formulations [9,10] . Regarding point (ii), some of us have studied the electrochemical response of C/bimetallic composites with respect to urea oxidation [7] and nitrate [5] or CO 2 reduction, [4,6] with an emphasis on the evolution of the signal as a function of the catalyst composition. Guilminot et al .…”