Surface engineering of phosphorus low-doping palladium nanoalloys anchored on the three-dimensional nitrogen-doped graphene for enhancing ethanol electroxidation

Pd/CuO–Ni(OH)2/C as a highly efficient and stable catalyst for the electrocatalytic oxidation of ethanol

“…[13][14][15][16][17] To obtain highly stable Pd-based catalysts and maximize the catalytic efficiency of Pd, a number of relevant approaches have been used. [18][19][20][21][22][23][24][25] During modification of Pd-based catalysts, the addition of a co-catalyst is a common method, including the formation of alloys between the two metals 26 or the introduction of metal oxides 27,28 to enhance the catalytic activity and corrosion resistance and reduce the degradation of the active surface in Pd-based catalysts. In recent reports, metal-based heterostructures have been widely employed in electrocatalytic reactions.…”

Easy preparation of multifunctional ternary PdNiP/C catalysts toward enhanced small organic molecule electro-oxidation and hydrogen evolution reactions

“…S8 by the BE peaks at 129.7 and 130.6 eV, characteristic of metal-P bonding in phosphides [39,46]. The observed blue shift in binding energy indicates that upon phosphorization electrons transfer from metal species to P species, which could result in a downshift of the d-band center and is favorable to weaken the adsorption of both reactants and intermediates in a modest manner for both OMEO and HER [26,[28][29][30], helping improve the catalytic performance.…”

“…Given the high cost and low earth-abundance of Pd, substantial efforts have been made in the past decades toward improving the utilization efficiency of Pd when used to catalyze the OMEO and HER, through alloying with abundant and inexpensive transition metals and designing hybrid catalysts such as PdNi [14,15], PdCo [16,17], PdCu [14,[17][18][19][20], PdIr [21,22], PdPt [23,24] and Pd/TiO 2 [25], and enhanced electrocatalytic performance has been accomplished. Moreover, recent studies also demonstrated that Pd can form compounds with cheap, non-metal phosphorus [26][27][28][29][30][31], for example PdP [28][29][30] and PdCuP [31], which can be used to catalyze HER or OMEO of formic acid and ethanol. The phosphorus element has abundant valence electrons, and the formation of phosphide may remarkably improve the catalytic activity, as illustrated in the transition metal phosphide catalysts for HER [32][33][34][35].…”

“…Meanwhile, it was reported that the introduction of phosphorus into metal catalysts may notably enhance the corrosion resistance especially in acidic medium and/or help oxidize poisoning intermediates, thereby improving the catalyst's longevity [36][37][38]. Notwithstanding some progress, most previously reported Pd-based catalysts only proved to be active for one specific model reaction [26][27][28][29][30][31]. Although a Pdbased catalyst with good electrocatalytic performance toward several different reactions is highly desirable for the applications in DLFCs and water electrolyzers, this has so far not been demonstrated yet, according to the best of our knowledge.…”

Surface Nitridation of PdCu Nanosheets to Promote Charge Transfer and Suppress CO Poisoning toward Ethanol Electrooxidation

“…Surface engineering could be an effective strategy to promote the catalytic performance especially toward the EOR because of its high sensitivity to surface composition and structure. [14,15] Hu and co-workers reported that Ni 2 P could function as an effective cocatalyst for Pd-catalyzed electrooxidation of formic acid. [16] Previous studies demonstrated that Pd electronic structure could be modified through B or P doping, which greatly enhances the tolerance toward CO poisoning and consequently catalytic performance.…”