Preparation and high catalytic performance of Au/3DOM Mn2O3 for the oxidation of carbon monoxide and toluene

xAu/3DOM Mn2O3 (x = 1.9−7.5 wt%) nanocatalysts are prepared via the PMMA-templating and PVA-protected reduction routes. The high oxygen adspecies concentration, good low-temperature reducibility, and strong interaction between Au and Mn2O3 are responsible for the high catalytic performance of 5.8Au/3DOM Mn2O3.