Facile synthesis of corallite-like Pt–Pd alloy nanostructures and their enhanced catalytic activity and stability for ethanol oxidation

A Strategy for Fabricating Porous PdNi@Pt Core-shell Nanostructures and Their Enhanced Activity and Durability for the Methanol Electrooxidation

“…Cyanogel, a coordinate inorganic polymer, is a special class of 3D double-metal cyanide, which can be facily achieved by mixing tetrachlorometalates ([RCl 4 ] 2− , R = Sn, Pd, Pt) and cyanometalates ([M(CN) n ] 2−/3− , (n = 4, 6; M = Pd, Pt, Fe, Co, Ni, Ru) aqueous solutions (equation (1))27282930313233. After mixing K 2 PdCl 4 and K 2 Ni(CN) 4 aqueous solutions at room temperature for 10 min, the orange jelly-like K 2 PdCl 4 /K 2 Ni(CN) 4 cyanogel generates slowly (Figure 1A).…”

“…In recent works, we have successfully synthesized the 3D porous noble metal nanostructures by reducing cyanogels with NaBH 4 at room temperature. The as-prepared 3D alloy nanostructures generally exhibited enhanced electrocatalytic activity and stability for the MOR, oxygen reduction reaction, ethanol oxidation reaction, and formic acid oxidation reaction, etc 27282930.…”

Nanocatalysts for Electrocatalytic Oxidation of Ethanol

“…ZnO template-assisted electrodeposition optimal Pd/Co ratio,a nd hollow and porousstructure 2015 [138] PdCo coreduction synergistic effectfrom the uniques tructure and chemical composition:t hin carbon shelli nhibits particlea gglomeration and alloying with Co modification of the electronic structureo fP d 2017 [139] PdCu coreduction by NaBH 4 3D network, self-supporting, and electronic interactions 2015 [140] PdCu coreduction smaller size, more Pd active sites on the surface, and good synergistic effects 2016 [141] PdCu coreduction by CO ultrathin sheet structure, cleans urfacec lean feature, 3D structure,a nd synergistic effect 2017 [142] PdFe one-pot thermald ecompositiondownward shifted d-bandc enter,easily formed oxygen-containings pecies, and stabilizing effect from supports 2015 [143] PdGe coreduction balance between adsorption energies of CH 3 CO and OH on the catalystsurface and presence of vacanciesi nt he inactive sites 2015 [144] PdNi coreductionsynergistic effectofP dNi particles and rGO support2018 [145] Ni@PdNi electrodepositionand galvanic replacementr eaction bifunctional mechanism that alleviates surface CO poisoning 2018 [146] PdPb coreductionoptimal electronic and geometric effects,a nd stable chemical configuration2 017 [147] PdRu seed-mediated growth optimal Pd/Ru ratio and bifunctional mechanism 2015 [148] PdSn coreductioni nt he presenceo fs ize-and shape-directing agents exposureoffavorable facets 2016 [149] PtCo coreductioni nt he presenceo fs ize-and shape-directing agents presence of activet hreefold hollow sites on platinum-rich high-indexf acets 2016 [150] PtCo coreductionb ycontrolled thermal treatment promotion of partial oxidationo fe thanolover CÀCb ond cleavage Pt 3 Co with Pt skin 2017 [151] PtCu coreductiona td ifferent pH valuesmorphological tailoring 2016 [152] PtCu coreductionmonodispersion,s mall sizes (sub-5 nm), and polyhedral structures 2017 [153] PtIr coreductiondendriticstructures, surface state, and controlled electronic structure2016 [154] PtNi coreductionb yoleylamine synergistic electronic and facet effects2017 [155] PtPd coreductioni nt he presenceo fr GO optimal Pt/Pd ratio, synergistic effect, and ligand effect 2014 [156] PtPd coreductioni nt he presenceo fr GO dendriticstructure, synergistice ffect, and good dispersion of rGO 2014 [157] PtPd coreductioni nt he presenceo fg raphene optimal Pt/Pd ratio and morphology tuning 2014 [158] PtPd coreductionb yNaBH 4 electronic effectsand bifunctional mechanism 2014 …”

ChemInform Abstract: Recent Advances in the Synthesis and Electrocatalytic Applications of Platinum‐Based Bimetallic Alloy Nanostructures

“…PtPd alloy nanocrystals with varying structures are summarized in Ta ble 1. [20,[54][55][56][57][58][59][60][61][62][63][64][65][66][67][68][69] PtPd nanocubes ( Figure 1A)w ere generated by the reduction of K 2 PtCl 4 and Na 2 PdCl 4 using poly(vinyl pyrrolidone) (PVP) as ar eductant as well as am ixture of al arge amount of Br À and at iny amount of I À anions as (1 00)-facet-selective agents. Thesubstitution of Br À and I À with Na 2 C 2 O 4 and formaldehydel eads to the formation of PtPd nanotetrahedra ( Figure 1B)e nclosed by {111}f acets.…”