A novel structural design of hybrid nanotube with CNTs and CeO2 supported Pt nanoparticles with improved performance for methanol electro-oxidation

Scheme 1. An ideal schematic illustration of Pt/CeO2-CNTs-HN catalysts. A novel Pt/CeO2-CNTs hybrid nanotube catalyst with CNTs and CeO2 supported Pt nanoparticles has been successfully prepared by the liquid-phase chemical deposition method. The greatly improved activity and durability of Pt/CeO2-CNTs-HN catalyst is mainly a consequence of the unique hybrid nanotube structure, which can facilitate the homogeneous distribution of the Pt nanoparticles over CeO2-CNTs-HN support, accelerate the process of methanol electro-oxidation, and inhibit the agglomeration and detachment of Pt, as well as mitigate the CO heavily poisoning of Pt.442