LAUSR

Developing single-atom catalysts with superior stability under reduction conditions is essential for hydrogenation / dehydrogenation catalysis and green hydrogen generation. In this contribution, single-atom Pt catalysts were achieved via a reduction environment induced anti-Ostwald approach in the highly confined Ni species (Pt-Nix) on nonreducible Al2O3 matrix. In situ X-ray absorption spectroscopy (EXAFS & XANES) indicated that the isolated Pt-Nix metallic bonds, generated at high reduction temperature, dominated the formation of single Pt atoms. A relatively large cluster of metallic Ni would benefit the stabilization of Pt single atom as observed via HAADF-STEM and validated by DFT simulation. Excellent performance on cellulose hydrogenolysis was demonstrated under harsh reductive and hydrothermal conditions, potentially expanded to other hydrogen involved reactions like CO2 hydrogenation, green hydrogen production from different hydrogen carriers and beyond.