C, N co-doping promoted mesoporous Au/TiO2 catalyst for low temperature CO oxidation

Abstract

Mesoporous C, N co-doped TiO₂ was fabricated by a one pot pyrolysis method using ammonium titanyl oxalate as the precursor. When deposited with Au, the resulting materials possessed a relatively high surface area and highly dispersed gold nano-particles, exhibiting high catalytic activities for CO oxidation. The doping of C and N into meso-structured TiO₂ increases the number of surface defect which could improve the absorption of oxygen, tune the metal-support interaction and promote the catalytic activities for CO oxidation.