“…A variety of metal oxide catalyst formulations have been evaluated for the deep oxidation of VOCs, including CuO x [12,15,16], MnO x [12,[16][17][18][19], CeO x [15,16,20,21], NiO x [12,16,22], CoO x [22][23][24][25], MoO x [12,16,22,23,26], ZrO x [16,20,[26][27][28], CrO x [12,26], VO x [10,22], FeO x [12,22,23], and their binary mixtures [12,15,17,20,21,26,[28][29][30][31][32][33]. Indeed, among these non-noble metal oxide catalysts investigated for the complete oxidation of toluene, copper was found to be the most promising catalyst.…”