Nanoalloying effects and dealloying endow D-AgCuPd aerogels with significantly enhanced FOR activity compared to their monometallic, bimetallic trimetallic counterparts.

Engineering nanoparticle surfaces driven by various gas atmospheres has attracted intensive attention in the design of efficient electrocatalysts for sustainable energy applications. However, development a more facile and situ engineering strategy under electrochemical testing conditions to achieve surface-reconstruction-induced high performance is significantly lacking. Herein, first time, we report high-potential-driven restructuring ternary AgPdPt aerogels with dilute Pt (AgPd-Ptdilute)...

Inverse CeO₂/Pd catalysts with Pd/Ce alloying enhanced FOR activity by the electronic effect of Ce and oxophilic CeO₂.

The large-scale practical application of formate oxidation reaction (FOR) catalysts is hindered by their low activity and high cost. Herein, for the first time, a series Pd-doped Ag dilute nanoalloys demonstrated to have catalytic in FOR with reduced consumption Pd metals through density functional theory calculations, where effects potential, solvent spin on performance are discussed. Pd1Ag(111) single-atom alloy (SAA) exhibits higher as reflected limiting potential 0.026 eV direct...

Formate is a kind of carbon-neutral fuel that can be synthesized by electrochemical conversion CO2, however, the generated aqueous formate electrolyte still short potential application. Here, solution proposed to utilized as anode fuels direct cells through oxidation reaction (FOR), and graphene supported AgPd nanoalloys (AgPd/rGO) are prepared catalyze FOR. Specifically, mass activity as-prepared Ag49Pd51/rGO catalyst 4.21 A mg-1Pd retention 49.1% initial after successive 500 cycles, which...

AgPd–Ag 2 O and AgPd–AgF heterointerfaces are prepared through reconstruction designed by using “2D materials on metal” heterostructure models to illustrate their impact mechanism electrocatalytic activity toward the formate oxidation reaction.

Promoting the formate oxidation reaction (FOR) is central to develop promising direct fuel cells, but current electrocatalysts are suffering from low activity and ultrapoor stability. Herein, ternary PdAgRh nanoalloys with ultrathin two-dimensional architecture for first time synthesized employed as a novel class of FOR. Benefitting unique nanostructure well oxophilic Rh surface oxides, Pd55Ag30Rh15/C electrocatalyst demonstrates an exceptional FOR 1.85 A mgPd-1, showing 4.74-fold...

High-performance Pd-based nanocatalysts for alkaline methanol and formate fuel cells have stimulated widespread attention. Hence, a series of ternary Pd-Au-Ag nanoalloys been synthesized on carbon nanotubes, which demonstrate promising activity unexpectedly high stability the oxidation reaction (FOR) in medium. The Pd3Au3Ag1 nanoalloy catalyst showed an initial mass 4.51 A mgPd-1 retained 1.32 after chronoamperometric measurement 3600 s, are superior to best values all FOR catalysts reported...

The correlation between the surface reconstruction of AgPdF and AgPd nanoalloys their catalytic activity stability in FOR is examined. AgPdO reconstructed to form AgPd, whilst maintains a record retention time up 78 hours higher current density.

Although line defects endow excellent catalytic performance by undercoordinated sites with compressive tensile strain, few studies have systematically unraveled the relationship between dislocation, and electrochemical activity for formate oxidation reactions (FOR). Herein, a novel approach synthesizing defect‐rich nanomaterials at room temperature is proposed first time. The heated dealloyed AgPd nanoparticles (hd‐AgPd NPs) substantially improve intrinsic electrocatalytic introducing strain...

The design of heterogeneous catalysts generally involves optimizing the reactivity descriptor adsorption energy, which is inevitably governed by structure surface-active sites. A prerequisite for understanding structure–properties relationship precise identification real site structures, rather than relying on conceived structures derived from bulk alloy properties. However, it remains a formidable challenge due to dynamic nature nanoalloys during catalytic reactions and lack accurate...

The study provides a proof of concept for the first time that unique palladium-gold (PdAu) and palladium-silver (PdAg) nanodendrites are bifunctional catalytic active sites formate oxidation reactions (FORs) dehydrogenation (FDRs). nanodendritic structure was developed via simple galvanic displacement reaction direct growth PdAu PdAg on nickel foam (PdAu/NiNF PdAg/NiNF). These PdAu/NiNF PdAg/NiNF electrodes exhibited 2.32 1.59 times higher specific activity than commercial Pd/C electrode...

A novel PdAgIr NFs/C alloy with ordered mesoporous architecture is designed as an advanced catalyst for FOR, which, the first time, delivers a record-low onset potential, outstanding stability and impressive oxidation current density platform.

The plasmonic-enhanced catalytic activity of methanol oxidation on Au-based catalysts provides a promising strategy for direct fuel cells (DMFCs) to avoid the CO poisoning traditional Pt-based catalysts. However, effect surface plasmon resonance light-enhanced Au or has not been fully understood. mechanism by which hot plasmonic carriers participate in reaction (MOR) elucidated. Herein, nanoparticles (Au NPs) are loaded support single-layer graphene-Cu contacts (SG/Cu) construct nanosandwich...

Surface reconstruction processes and effects of reconstructed species during the formate oxidation reaction (FOR) remain unclear, limiting ability to guide design efficient stable electrocatalysts through reconstruction–performance relationship. In this paper, globally structures adlayer–alloy interface on AgPdF alloy from fluorination-enabled surface are predicted via particle swarm optimization algorithms coupled with density functional theory (DFT) calculations. Various 2D metal fluoride...

The methanol oxidation reaction (MOR) is crucial in many energy-conversion devices. Although intensive efforts have been devoted to improving the MOR catalytic activity of Pt-based catalysts by treatment or alloying, enhancing catalyst performance utilizing solar energy has less investigated. PtAg nanoalloys, combining intrinsic Pt toward with visible spectrum plasmonic response Ag, are expected be a good for energy, however, it remains challenging incorporate these immiscible elements into...

Formate has emerged as a promising energy carrier to generate electrons via formate oxidation reaction (FOR) and hydrogen dehydrogenation (FDR), it is desirable but difficult design novel bifunctional (electro)catalyst improve kinetics. Herein, we construct the single-twinned AgPdIr (t-AgPdIr) nanoalloy catalytic activity stability for processes. The t-AgPdIr nanoalloy, characterized by distinctive twinned structure with strains downshift of d-band center, demonstrates an improved peak...

The atomic strains of AgPd nanoalloy was mapped to investigate the potential correlation between enhanced surface reactivity and structural properties. compressive strain can significantly improve FDH FOR.