Mesoporous CuO/TiO2 catalysts prepared by the ammonia driven deposition precipitation method for CO preferential oxidation: Effect of metal loading

•Production of highly selective mesoporous CuO/TiO2 catalysts for CO-PROX.•ADP on a mesoporous support affords ultra-small highly dispersed CuO nanoparticles.•Optimization of CO-PROX performance by Cu loading adjustment.•5 wt% Cu loading provides the optimum CO-PROX performance.•The 5 wt% Cu/TiO2 catalyst demonstrates high long-term stability and durability.