High-loading and thermally stable Pt₁/MgAl_1.2Fe_0.8O₄ 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 N₂O decomposition reaction is obtained on such SACs than their nanocatalyst counterpart and low-surface-area Fe₂O₃ supported Pt SACs. This work provides a strategy for the fabrication of high-loading and thermally stable SACs for applications at high temperatures.