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Issue 30, 2016
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Hydrophilic swellable metal–organic framework encapsulated Pd nanoparticles as an efficient catalyst for Cr(vi) reduction

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Abstract

Controllable integration of metallic nanoparticles and metal–organic frameworks (MOFs) may create a new material with multifunctional applications. In this work, an emerging type of core–shell nanostructure, in which metallic Pd nanoparticle cores were encapsulated by MOF (ZIF-67) shells, was facilely synthesized through an impregnation–reduction process. The as-synthesized Pd@ZIF-67 material, with highly dispersed Pd nanoparticles encapsulated in the porous ZIF-67 structure, exhibited favorable catalytic performance towards the formic acid (HCOOH)-induced reduction of highly toxic hexavalent chromium (Cr(VI)). In this process Cr(VI) was converted to Cr(III) within 5 min, and the material could be reused 10 times without significant loss of its catalytic activity. The highly hydrophilic and swellable nature of the ZIF-67 was proposed to be responsible mainly for the favorable durability of the Pd@ZIF-67. The results provided in this work may pave a way for the concise preparation of nano-hybrid catalysts with high performance and durability for pollutant elimination.

Graphical abstract: Hydrophilic swellable metal–organic framework encapsulated Pd nanoparticles as an efficient catalyst for Cr(vi) reduction

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Supplementary files

Article information


Submitted
03 May 2016
Accepted
24 Jun 2016
First published
24 Jun 2016

J. Mater. Chem. A, 2016,4, 11680-11687
Article type
Paper

Hydrophilic swellable metal–organic framework encapsulated Pd nanoparticles as an efficient catalyst for Cr(VI) reduction

H. Li, W. Liu, H. Han and H. Yu, J. Mater. Chem. A, 2016, 4, 11680
DOI: 10.1039/C6TA03688K

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