Surfactant-Mediated One-Pot Method To Prepare Pd-CeO₂ Colloidal Assembled Spheres and Their Enhanced Catalytic Performance for CO Oxidation.

ABSTRACT: A simple, one-pot method to fabricate ordered, monodispersed Pd-CeO₂ colloidal assembled spheres (CASs) was developed using the surfactant-mediated solvothermal approach, which involves a tunable self-assembled process by carefully controlling different chemical reactions. The evolution process and formation mechanism of the CASs were thoroughly investigated by time-controlled and component-controlled experiments. For CO oxidation, this CAS nanocatalyst exhibited much higher catalytic activity and thermal stability than Pd/CeO₂ prepared by an impregnation method, and its complete CO conversion temperature is ∼120 °C. The enhanced catalytic performance for CO oxidation could be attributed to the synergistic effect of highly dispersed PdO species and Pd²⁺ ion

SUBMITTER: Du C 

PROVIDER: S-EPMC6640731 | biostudies-literature | 2016 Jul

REPOSITORIES: biostudies-literature