One-pot synthesis of Au–Fe2O3@SiO2 core–shell nanoreactors for CO oxidation†
Abstract
Core–shell nanostructured Au–Fe2O3@SiO2 nanoreactors with 3–4 nm Au–Fe2O3 cores and microporous SiO2 shells were prepared by a water-in-oil (W/O) microemulsion method. In comparison with Au@SiO2, the obtained Au–Fe2O3@SiO2 nanoreactors showed a significant improvement in CO oxidation due to the strong interactions between Au and Fe2O3 in the cores.