Electrocatalysts for electrooxidation of methyl formate

Colloidal Synthesis and Structural Control of PtSn Bimetallic Nanoparticles

“…PtSn bimetallic catalysts also play a major role in the petroleum industry for reforming paraffins to olefins or aromatics, and they exhibit superior activity, selectivity, and stability against coke deposition in isomerization and the aromatization or dehydrogenation of ethane, n -butane, isobutane, n -hexane, cyclohexane, n -heptane, methylcyclopentane, and n -propylbenzene . Besides, as one of the best catalytic materials for electrochemical reactions, PtSn bimetallics have been widely used for the electroreduction of oxygen and the electrooxidation of hydrogen, carbon monoxide, methanol, ethanol, propanol, methyl formate, and other small organic molecules in fuel cell technology.…”

“…In the aforementioned work, PtSn bimetallic nanoparticles were mostly prepared directly on catalyst supports or substrates either by coimpregnation , or the electrocodeposition , of platinum and tin with their metal salt solutions, followed by high-temperature treatments or by postgrafting the second metallic precursors onto previously formed nanoparticles of the first metal, again followed by high-temperature treatments (the sequential impregnation method). , Besides, supported PtSn bimetallic nanoparticles can also be synthesized by the coreduction method, , coprecipitation method, , sol–gel method, hydrothermal approach, , carbonyl route, , and a controlled surface reaction between organometallic tin compounds with supported Pt nanoparticles under a hydrogen atmosphere. , All of these methods have the drawback that the degree of control over structural parameters such as the particle size and elemental composition is in general quite limited, although these parameters can strongly influence the performance of bimetallic catalysts. , …”