Area of research
Materials Chemistry · Process Chemistry and Technology
Research interest
Research topics from publications: Design and Remarkable Efficiency of the Robust Sandwich Cluster Composite Nanocatalysts ZIF-8@Au25@ZIF-67; A low-nuclear Ag4 nanocluster as a customized catalyst for the cyclization of propargylamine with CO2. Representative work: Heterogeneous catalysts with precise surface and interface structures are of great interest to decipher the structure–property relationships and maintain remarkable stability while achieving high activity. Here, we report the design and fabrication of the new sandwich composites ZIF-8@Au25@ZIF-67[tkn] and ZIF-8@Au25@ZIF-8[tkn] [tkn = thickness of shell] by coordination-assisted self-assembly with well-defined structures and interfaces. The composites ZIF-8@Au25@ZIF-67 efficiently catalyzed both 4-nitrophenol reduction and terminal alkyne carboxylation with CO2 under ambient conditions with remarkably improved activity and stability, compared to the simple components Au25/ZIF-8 and Au25@ZIF-8 Abstract The preparation of 2-Oxazolidinones using CO 2 offers opportunities for green chemistry, but multi-site activation is difficult for most catalysts. Here, A low-nuclear Ag 4 catalytic system is successfully customized, which solves the simultaneous activation of acetylene (-C≡C) and amino (-NH-) and realizes the cyclization of propargylamine with CO 2 under mild conditions. As expected, the Turnover Number (TON) and Turnover Frequency (TOF) values of the Ag 4 nanocluster (NC) are higher than most of reported catalysts. The Ag 4 * NC intermediates are isolated and confirmed their structures by Electrospray ionization (ESI) and 1 H Nuclear Magnetic Resonance ( 1 H NMR). Additionally, t