我室熊海峰教授在 Chem 上发表论文：Vapor-phase self-assembly for generating thermally stable single atom catalysts

摘要：With maximum atom efficiency, single-atom catalysts have attracted extensive attention in catalysis. However, metal single-atom catalysts (SACs) are thermodynamically unstable under reaction conditions, especially on conventional supports that have a weak metal-support interaction. Here, we report a new design principle, vapor-phase self-assembly, to efficiently anchor Pt single atoms on a conventional support MgAl₂O₄. We demonstrated a stable triangular K₃O₃ structure to serve as sites for trapping isolated Pt species, leading to a superior stability in methane oxidation. We also investigated other alkali metal cations (Li, Na, and Cs), metal centers (Ru, Ir, and Au), and oxide supports (SiO₂, NiAl₂O₄, CoAl₂O₄, and MgCr₂O₄). The results were used to reveal the generality of this approach. This work paves the way for preparing thermally/hydrothermally stable SACs using supports that provide only weak metal-support interaction while having the high surface area inherited by these supports.

文章链接：https://www.sciencedirect.com/science/article/pii/S2451929421005386