Synergistic Catalysis over Bimetallic Alloy Nanoparticles

Abstract

Bimetallic nanoparticles (NPs) have emerged as an important class of catalysts. In many cases, bimetallic alloy NPs have higher catalytic efficiencies than their monometallic counterparts, owing to strong synergy between the metals. In this Review, we survey the research progress on the synergistic effect of bimetallic alloy NPs for catalytic reactions related to fuel cells, such as the electrochemical oxidation of MeOH, EtOH, and formic acid, CO oxidation, the oxygen‐reduction reaction, and the dehydrogenation of ammonia borane, formic acid, hydrous hydrazine, hydrazine borane, etc. In addition, the use of synergistic catalysis in some other important reactions has also been reviewed. Recent developments in synergistic catalysis over bimetallic alloy NPs will provide access to a variety of low‐cost and high‐performance catalysts for laboratory and industrial applications within the next few years.

Electrochemical Detection of Hydroxylamine via Au-Pt Alloy Nanoparticle-modified Single-walled Carbon Nanotube Electrodes

“…The enhancement in electrocatalytic activity has been attributed to the synergistic effect of the surface electronic states on the effective atomic coordination number. 14 In particular, it has been found that Pt in Au-Pt alloy nanoparticles plays an important role in enhancing catalytic activity.…”

“…The improvements derived from the combination of two metal elements into bimetallic nanoparticles can be attributed to synergistic effects. 14 In particular, Au-Pt alloy nanoparticles have been extensively researched because the Au-Pt bimetallic system has greater catalytic activity and enhanced functionalities than pure Pt or Au. 15 However, it is challenging to synthesize single-phase Au-Pt alloys because they are immiscible in the bulk.…”

Green synthesis of bimetallic Pt@Cu nanostructures for catalytic oxidative desulfurization of model oil

“…Thus, green synthesis of nanoparticles using biomaterials is attractive to most scientists due to its simplicity and eco-friendliness. Bimetallic nanostructures are also more attractive for a wide range of catalytic and electrocatalytic applications over their monometallic counterparts due to combined properties of the two individual metals and the synergy that exists between the two metals [12][13][14][15][16][17].…”

Embedding colloidal nanoparticles inside mesoporous silica using gas expanded liquids for high loading recyclable catalysts

“…The application of bimetallic NPs including alloys and core-shell structures are gaining interest due to their enhanced activity or selectivity. 1,2 Continuing developments in colloidal synthesis is enabling greater control of structural and chemical features at the nanoscale. The majority of catalytic applications requires immobilisation of colloidal NPs onto support materials, with activated carbon or nonporous oxide supports most commonly used for pre-synthesized NPs, however incorporation of NPs into porous supports is desirable.…”