Tailoring the crystal structure of CaTiO3 by multielement doping for photo-assisted activation of NO

• Pristine CaTiO 3 has no activity for SCR deNO x , while Ce-Fe-Mn doped could achieve almost 100% NO conversion at 135°C (GHSV = 72000 h -1 ). By selectively activating gaseous molecules, Ti, Fe, and Mn present apparent synergistic effects on accelerating the catalytic cycle of standard SCR. The photocarriers intensify oxidation rather than NH -to-NH 2 transformation. Although photocatalysis exhibits great prospects in selective reduction (photo-SCR), principles informed design photo-SCR catalysts are lacking. Herein, based inert we tailor a crystal structure high-efficiency by partially substituting Ca with Ce, Ti Fe Mn. pristine is hard to remove 100-300°C, nearly under light irradiation dopants enable activate harvest visible light. significant Moreover, it firmly shown that This work provides new insights into structure-activity relationship perovskite-based deepens understanding light-driven mechanism.