Fig. 4: The catalytic performance of all the catalyst.

a CO conversion as a function of reaction temperature over all catalysts. Reaction conditions: 0.4 g of Cat., 1 vol% CO, 4 vol% O2, balanced with N2; v = 400 mL min−1, GHSV = 60,000 mL g−1 h−1, b–d Activity test on all catalysts with different O2 concentrations. Reaction conditions: 0.4 g of Cat., v = 400 mL min−1, GHSV = 60,000 mL g−1 h−1, e Apparent activation energies (Ea) over different catalysts. f In comparison with the catalysts listed in Supplementary Table 2. g The cycling test of the CO oxidation activity of PtPt-TiISAA+NP/TiO2-R from 80 to 160 °C. Cyclic CO oxidation reaction condition: 0.4 g of Cat., a gas mix containing 1 vol% CO and 16 vol% O2 balanced with N2, v = 400 mL min−1. h A long-term test of PtPt-TiISAA+NP/TiO2-R (0.4 g of Cat., 110 °C, 1 vol% CO, 16 vol% O2, balanced with N2; v = 400 mL min−1, GHSV = 60,000 mL g−1 h−1).