Ultrasound-assisted micro-emulsion for synthesis of Pt and PtCo nano-particles

A Class of (Pd–Ni–P) Electrocatalysts for the Ethanol Oxidation Reaction in Alkaline Media

“…Moreover, the use of perfluorinated materials contributes to the high MEA costs. Prior investigations suggest that it may be possible to reduce the loading amount of noble metals such as platinum by making Pt core–shells, − alloying Pt with other transition metals, − or using high-surface-area carbon supports for better electrocatalyst utilization. − An alternative approach is to use non-Pt catalysts, , or non-noble metal catalysts − that replace traditional Pt-based catalysts. Unfortunately, neither non-Pt nor non-noble metal catalysts are stable in the presence of an acidic media under relevant fuel cell operating environments; therefore, alternative technologies must be pursued to drive down the fuel cell costs.…”

A Review of Pt-Based Anode Catalysts Preparation for Direct Ethanol Fuel Cell

“…Jiang and co-workers [14] successfully prepared PtCo nanoparticle catalysts using a ultrasound-assisted microemulsion method. The catalytic properties of PtCo catalysts for ethanol oxidation were studied.…”

Ultrasound-Driven enhancement of Pt/C catalyst stability in oxygen reduction reaction

“…For example, in the treatment of acid-treated carbon nanotubes using ultrasound, highly dispersed Pt nanoparticles formed on the support because they were prevented from agglomerating during the treatment process [25] . In addition, studies have been reported in which ultrasound was applied to the impregnation, micro-emulsion, and polyol methods to prevent agglomeration of reduced Pt nanoparticles to synthesize a catalyst with high particle dispersion [26] , [27] , [28] , [29] . However, it has been fairly difficult to clearly show the effect of using ultrasound during catalyst synthesis because previous studies have focused solely on the dispersion enhancement by ultrasound application, using only transmission electron microscopy (TEM) images or the studies have compared catalysts made by different synthesis methods or materials [26] , [27] , [28] .…”