Pt/MoO sub(3)-WO sub(3)/CNTs catalyst with excellent performance for methanol electrooxidation

A composite Pt-based catalyst was prepared by loading MoO sub(3) and WO sub(3) nanoparticles onto carbon nanotubes (Pt/MoO sub(3)-WO sub(3)/CNTs). There was a uniform nanoparticle distribution with small particle sizes. This was achieved through an in situ self-assembly method using poly(diallyldimethylammonium chloride) as a linker and through subsequent immobilization of the Pt using ethylene glycol as a reducing agent. The total amount of oxide in the CNTs was 10 wt%, and when the molar ratio of MoO sub(3) to WO sub(3) was 1:0.5, Pt/MoO sub(3)-WO sub(3)/CNTs showed the highest activity for the electrocatalytic oxidation of methanol with forward peak current of 835 A/g sub(Pt.) Because MoO sub(3) and WO sub(3) improve the electrocatalytic activity for methanol, CO oxidation ability, and the durability of the catalyst, the Pt/MoO sub(3)-WO sub(3)/CNTs catalyst exhibited excellent performance for the electrocatalytic oxidation of methanol.