Abstract
This study reports on the development of highly-efficient Pt/CuO-Fe2O3/TiO2 monolithic catalysts for the low-temperature conversion of NO to N2 via CO-SCR. In this case, ultrathin TiO2 nanosheet arrays are designed to in situ grow on flexible Ti mesh to provide more spaces/areas for the loading of highly-dispersed Fe2O3 and CuO active components. Furthermore, Pt nanoparticles with an average size of 1.30 nm are effectively decorated on the surface of CuO-Fe2O3/TiO2. The H2-TPR and NO-TPD results demonstrate that the excellent synergistic effect between TiO2, CuO, Fe2O3 and trace amounts of Pt is conducive to enhance the adsorption of NO and finally promote the CO-SCR. The obtained Pt/CuO-Fe2O3/TiO2 catalysts exhibit excellent CO-SCR performance with 100 % NO conversion, and 100 % N2 selectivity at 250 °C, showing great potential of de-NOx application by using toxic CO as reductant in industry.
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