Influence of hematite morphology on the CO oxidation performance of Au/?-Fe2O3

Controlling the interaction between metal nanoparticles and support is a means to tune catalytic activity stability. Herein we investigated influence of morphology hematite on performance gold for CO oxidation. Nanosphere nanorod forms hematite, ?-Fe2O3(S) ?-Fe2O3(R) respectively, were used nanoparticles. The surface was more corrugated than that ?-Fe2O3(S). These defects provide anchoring sites nanoparticle deposition stabilization. Due stronger gold-support interactions, Au/?-Fe2O3(R) contained smaller hemispherical particles Au/?-Fe2O3(S). not only active in oxidation but also much stable as evident from small change particle size during reaction. higher reducibility contributed activity.