Yang Yuting, Xiao Yang, Jiang Li, Li Jiahui, Li Jialu, Jia Jiangtao, Yavuz Cafer T, Cui Fengchao, Jing Xiaofei, Zhu Guangshan
Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Northeast Normal University, Changchun, 130024, P. R. China.
Physical Science & Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Kingdom of Saudi Arabia.
Adv Mater. 2024 Oct;36(41):e2404791. doi: 10.1002/adma.202404791. Epub 2024 Aug 15.
Supported single-atom catalysts (SACs) are promising in heterogeneous catalysis because of their atom economy, unusual transformations, and mechanistic clarity. The metal SAs loading, however, limits the catalytic efficiency. Herein, an in situ pre-metallated monomer-based preparation strategy is shown to achieve ultrahigh Au SAs loading in catalyst formations. The polymerization of single-atom loaded monomers yield a new porous aromatic framework (PAF-164) with Au SAs loading up to a record high 45.3 wt.%. SACs of Au-PAFs exhibit excellent photocatalytic activity in hydrogen (H) evolution, and the H evolution rate of Au-SAs-PAF-164 can reach 4.82 mmol g h with great recyclability.
负载型单原子催化剂（SACs）因其原子经济性、独特的转化方式和清晰的反应机理，在多相催化领域颇具潜力。然而，金属单原子的负载量限制了催化效率。在此，展示了一种基于原位预金属化单体的制备策略，可在催化剂形成过程中实现超高的金单原子负载量。单原子负载单体的聚合产生了一种新的多孔芳香骨架（PAF-164），金单原子负载量高达创纪录的45.3 wt.%。金-多孔芳香骨架的单原子催化剂在析氢反应中表现出优异的光催化活性，金单原子-多孔芳香骨架-164的析氢速率可达4.82 mmol g⁻¹ h⁻¹，且具有良好的可循环性。
