Tailoring metal–oxide interfaces of inverse catalysts of TiO2/nanoporous-Au under hydrogen oxidation

Abstract

Engineering metal–oxide interfaces in TiO₂/nanoporous (np) Au inverse catalysts results in enhancement of H₂ oxidation activity. While the intrinsic activity of the novel np-Au prepared from a Au–Si alloy is low, the activity increased as the weight fraction of the TTIP (amount of TiO₂) was increased to 0.5 weight%. We correlate the change in activity with the active sites at the perimeter interface between the TiO₂ and np-Au.