Mesoporous oxides TiO2 and ZrO2, synthesized by surfactant templating via a neutral C13(EO)6–Zr(OC3H7)4 assembly pathway, and ceria-modified TiO2 and ZrO2, prepared by a deposi-tion–precipitation(DP) method, featuring high surface areas and uniform pore size distributions were used as supports for gold catalysts. The supported gold catalysts were assessed for the cata-lytic abatement of air pollutants, i.e., CO, CH3OH, and(CH3)2O. The gold was supported on the mes-oporous oxides by a DP method. The supports and catalysts were characterized by powder X-ray diffraction, high-resolution transmission electron microscopy, N2 adsorption–desorption analysis, and temperature-programmed reduction technique. A high degree of synergistic interaction be-tween ceria and mesoporous ZrO2 and TiO2 as well as a positive modification of the structural and catalytic properties by ceria was observed. The ceria additive interacts with the mesoporous oxides and induces a strong effect on the reducibility of the supports. The catalytic behavior of the catalysts was discussed to determine the role of the ceria modifying additive and possible interaction be-tween the gold nanoparticles and ceria-mesoporous oxide supports. The gold catalysts supported on ceria-modified mesoporous ZrO2 displayed superior catalytic activity(~100% conversion of CO at 10 ℃ and CH3OH at 60 ℃). The high catalytic activity can be attributed to the ability of the sup-port to assist oxygen vacancies formation. The studies indicate that the ceria-modified mesoporous oxide supports have potential as supports for gold-based catalysts. Mesoporous oxides TiO2 and ZrO2, synthesized by surfactant templating via a neutral C13 (EO) 6-Zr (OC3H7) 4 assembly pathway, and ceria-modified TiO2 and ZrO2, prepared by a deposi- tion-precipitation surface areas and uniform pore size distributions were used as supports for gold catalysts. The supported gold catalysts were assessed for the cata-lytic abatement of air pollutants, ie, CO, CH3OH, and (CH3) 2O. The gold was supported on the mes -oporous oxides by a DP method. The supports and catalysts were characterized by powder X-ray diffraction, high-resolution transmission electron microscopy, N2 adsorption-desorption analysis, and temperature-programmed reduction technique. A high degree of synergistic interaction be-tween ceria and mesoporous ZrO2 and TiO2 as well as a positive modification of the structural and catalytic properties by ceria was observed. The ceria additive interacts with the mesoporous oxides and induces a strong effect on the reducibil The catalytic behavior of the catalysts was discussed to determine the role of the ceria modifying additive and possible interaction be-tween the gold nanoparticles and ceria-mesoporous oxide supports. The gold catalysts supported on ceria-modified mesoporous ZrO2 displayed superior catalytic activity (~ 100% conversion of CO at 10 ° C and CH3OH at 60 ° C. The high catalytic activity can be attributed to the ability of the sup-port to assist oxygen vacancies formation. The studies indicate that the ceria-modified mesoporous oxide supports have potential as supports for gold-based catalysts