Mesoporous palladium-doped TiO2 with anatase phase and high surface area was successfully synthesized by using a green sol gel method with an ionic liquid (IL; 1-buty1-3-methylimidazolium ferric chloride), as a template. This IL could be recovered and reused by magnetic separation after synthesis. The synthesized mesoporous sample was characterized through FESEM, XPS, XRD, and N-2 adsorption desorption methods. The photo catalytic activity of Pd-doped titanic in ionic liquid (Pd/IL-TiO2) for the degradation of NOx and CO was investigated. The results demonstrated that the ionic liquid ([BMIM]FeCl4), in combination with Pd dopant, retarded the creation of nanocrystals, with a small grain size (9.1 nm) and, presumably, a larger surface area. With regard to the bare IL-TiO2 sample, the optical band gap calculated for the Pd/LL-TiO2 obtained was 2.68 eV in comparison to 2.77 eV. Pd/IL-TiO2 presented much better NOx (88%) and CO (74%) photodegradation as compared to undoped IL-TiO2 (59 and 56%) in the same residence time.