N2O-emission-free exhaust remediation by Rh-NbOx nanocomposites developed from Rh3Nb alloy precursor

Abstract

Metal-oxide nanocomposites comprising rhodium (Rh) nanoparticles (<50 nm) and oxygen-deficient niobium oxides (NbOx: x < 5/2) were developed from Rh3Nb alloy precursors. The Rh-NbOx nanocomposite exhibited enhanced activity toward the catalytic remediation of nitrogen oxide (NO) in the presence of carbon monoxide (CO) without emissions of nitrous oxide (N2O) due to the promoted dissociation of NO admolecules at the Rh/NbOx interface.