Sutar Papri, Bakuru Vasudeva Rao, Yadav Pooja, Laha Subhajit, Kalidindi Suresh Babu, Maji Tapas Kumar
Molecular Materials Laboratory, Chemistry and Physics of Materials Unit, School of Advanced Materials (SAMat), Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, 560064, India.
Materials Science Division, Poornaprajna Institute of Scientific Research, Devanahalli, Bangalore Rural, 562164, India.
Chemistry. 2021 Feb 15;27(10):3268-3272. doi: 10.1002/chem.202004345. Epub 2021 Jan 18.
The composite hydrogel of a nanoscale metal-organic framework (NMOF) and nanoclay has emerged as a new soft-material with advanced properties and applications. Herein, we report a facile synthesis of a hydrogel nanocomposite by charge-assisted self-assembly of Pd@ZIF-8 nanoparticles with Laponite nanoclay which coat the surface of Pd@ZIF-8 nanoparticles. Such surface coating significantly enhanced the thermal stability of the ZIF-8 compared to the pristine framework. Further, the Pd@ZIF-8+LP hydrogel nanocomposite shows better size-selective catalytic hydrogenation of olefins than Pd@ZIF-8 nanoparticles based on selective diffusion of the substrate.
纳米级金属有机框架（NMOF）与纳米黏土的复合水凝胶已成为一种具有先进性能和应用的新型软材料。在此，我们报道了一种通过Pd@ZIF-8纳米颗粒与覆盖在Pd@ZIF-8纳米颗粒表面的锂皂石纳米黏土进行电荷辅助自组装来简便合成水凝胶纳米复合材料的方法。与原始框架相比，这种表面包覆显著提高了ZIF-8的热稳定性。此外，基于底物的选择性扩散，Pd@ZIF-8+LP水凝胶纳米复合材料比Pd@ZIF-8纳米颗粒表现出更好的烯烃尺寸选择性催化氢化性能。
