Microstructured Au/Ni-fiber catalyst for low-temperature gas-phase alcohol oxidation: Evidence of Ni2O3-Au+ hybrid active sites

An interesting NiO@Au ensemble was identified, and such ensemble induces a high surface concentration of Ni2O3-Au+ active sites, which govern the high low-temperature activity. The Ni2O3 specimens not only promote the formation of Au+ and stabilize them, but also provide active O species to Au+, where alcohols are oxidized.