Bimetallic alloy and semiconductor support synergistic interaction effects for superior electrochemical catalysis

Abstract

The design and fabrication of economically viable anode catalysts for the methanol oxidation reaction (MOR) have been challenging issues in direct methanol fuel cells (DMFCs) over the decades.

Electrocatalytic reduction of furfural with high selectivity to furfuryl alcohol using AgPd alloy nanoparticles

“…10 Similar effects have been observed in recent reports where AgPd nanoalloys were used as catalysts in different electrochemical systems. 11,12 The results herein demonstrate that bimetallic AgPd alloy nano-Scheme 1 Summary of furfural production and common electrochemical reduction products derived from furfural.…”

Alkaline Formate Oxidation with Colloidal Palladium–Tin Alloy Nanocrystals

“…Typical deconvoluted spectra for Pd 3d of Pd 85 Sn 15 /C depicted in Figure c shows the binding energy (BE) for the core metallic Pd 3d species at ∼335.8 eV, while a BE of ∼335.78 eV was observed in low-Pd-containing Pd 44 Sn 56 /C (Figure S2a), and a BE of ∼335.98 eV could be seen for Pd 63 Sn 37 /C. The binding energy values for Pd species in the Pd–Sn catalysts, which are confirmed at positive shifts of ∼0.5, ∼0.5, and ∼0.6 eV, respectively, compared to Pd (∼335.3 eV) and Pd/C in the current study (∼335.4 eV), indicated a characteristic d-band center downshift and lattice modification by the Sn incorporation during the formation of alloys. , This d-band center change will be leading to improved catalytic activity in Pd alloys with higher antipoisoning capability with optimized intermediate adsorption. , The positive shift in BE observed in the alloy compositions compared to that of the pure metallic Pd(0) demonstrates a modified lattice environment, which is expected to arise due to the presence of more oxyphilic Sn. The increase in the lattice parameters observed in the alloy compositions compared to that of the pure Pd also supports this possibility.…”

“…22,53 This d-band center change will be leading to improved catalytic activity in Pd alloys with higher antipoisoning capability with optimized intermediate adsorption. 54,55 The positive shift in BE observed in the alloy compositions compared to that of the pure metallic Pd(0) demonstrates a modified lattice environment, which is expected to arise due to the presence of more oxyphilic Sn. The increase in the lattice parameters observed in the alloy compositions compared to that of the pure Pd also supports this possibility.…”

Hierarchical PdNi alloy nanochains coupled with Ni(OH)2 nanosheets to enhance CO-poisoning resistance for the methanol oxidation reaction

“…[24][25][26][27] Doping foreign metals into Pd nanocrystals could not only reduce the dosage of Pd, but also be effective at inducing synergistic effects for accelerating the MOR kinetics. 6,28,29 Among foreign metals, Ni and its compounds have been considered the most promising ones because of their cost effectiveness, abundance in nature, and versatile oxidation states. [30][31][32][33] Currently, the regulation mechanism of Ni could be classified into two types.…”

“…24–27 Doping foreign metals into Pd nanocrystals could not only reduce the dosage of Pd, but also be effective at inducing synergistic effects for accelerating the MOR kinetics. 6,28,29…”