Nanocomposite Hydrogel of Pd@ZIF-8 and Laponite® : Size-Selective Hydrogenation Catalyst under Mild Conditions

Papri Sutar; Vasudeva Rao Bakuru; Pooja Yadav; Subhajit Laha; Suresh Babu Kalidindi; Tapas Kumar Maji

doi:10.1002/chem.202004345

Nanocomposite Hydrogel of Pd@ZIF-8 and Laponite^® : Size-Selective Hydrogenation Catalyst under Mild Conditions

Chemistry. 2021 Feb 15;27(10):3268-3272. doi: 10.1002/chem.202004345. Epub 2021 Jan 18.

Authors

Papri Sutar¹, Vasudeva Rao Bakuru^{1

2}, Pooja Yadav¹, Subhajit Laha¹, Suresh Babu Kalidindi³, Tapas Kumar Maji¹

Affiliations

¹ 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.
² Materials Science Division, Poornaprajna Institute of Scientific Research, Devanahalli, Bangalore Rural, 562164, India.
³ Inorganic and Analytical Chemistry Department, School of Chemistry, Andhra University, Visakhapatnam, 530003, India.

PMID: 33300628
DOI: 10.1002/chem.202004345

Abstract

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.

Keywords: catalysis; metal-organic frameworks (MOFs); nanocomposite hydrogel; selective hydrogenation.