CAS key laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China.
Nanoscale. 2016 Aug 7;8(29):14104-8. doi: 10.1039/c6nr03894h. Epub 2016 Jul 12.
Pt-Cu nanoparticles constructed with a hollow core and porous shell have been synthesized in which Pt-Cu cages with multiporous outermost shells are formed at the initial stage and then the Pt and Cu atoms in solution continuously fed these hollow-core of cages by passing through the porous tunnels of the outermost shells, finally leading to the formation of hollow structures with different sizes. Furthermore, these hollow-core Pt-Cu nanoparticles are more effective than the solid-core Pt-Cu nanoparticles for the catalytic hydrogenation of furfural toward furfuryl alcohol. The former can achieve almost 100% conversion of furfural with 100% selectivity toward the alcohol.
Pt-Cu 纳米颗粒具有中空核和多孔壳，其中 Pt-Cu 笼在初始阶段形成具有多微孔最外层壳，然后溶液中的 Pt 和 Cu 原子通过最外层壳的多孔隧道不断供给这些中空核笼，最终导致具有不同尺寸的中空结构的形成。此外，这些中空核 Pt-Cu 纳米颗粒在用于糠醛催化加氢制备糠醇时比实心核 Pt-Cu 纳米颗粒更有效。前者可以实现糠醛几乎 100%的转化率，对醇的选择性为 100%。
