High-loading and thermally stable Pt-1/MgAl1.2Fe0.8O4 single-atom catalysts for high-temperature applications

Single-atom catalysts (SACs) have attracted extensive attention in the field of heterogeneous catalysis. However, the fabrication of SACs with high loading and high-temperature stability remains a grand challenge, especially on oxide supports. In this work, we have demonstrated that through strong covalent metal-support interaction, high-loading and thermally stable single-atom Pt catalysts can be readily prepared by using Fe modified spinel as support. Better catalytic performance in NO decomposition reaction is obtained on such SACs than their nanocatalyst counterpart and low-surface-area FeO supported Pt SACs. This work provides a strategy for the fabrication of high-loading and thermally stable SACs for applications at high temperatures.