Facile synthesis of meso-structured Pd/FeOx and its highly catalytic performance for low temperature CO oxidation under ambient conditions

Abstract

A series of meso-structured Pd/FeO_x catalysts were successfully fabricated through a facile pyrolysis and in situ reduction strategy. The as-prepared materials possessed relatively high surface area and highly dispersed Pd species, and exhibited excellent low temperature CO oxidation properties under ambient conditions. Complete CO conversion could be achieved at as low as 0 °C, when 2.5 vol% H₂O was introduced into the feed gas. In situ DRIFT analysis proved that these excellent catalytic properties can be attributed to the promotion of the water molecules and the synergetic effect between Pd nanoparticles and the meso-structured FeO_x support.