Open Access Nano Express

In situ-generated metal oxide catalyst during CO oxidation reaction transformed from redox-active metal-organic framework-supported palladium nanoparticles

Jin Yeong Kim1, Mingshi Jin2, Kyung Joo Lee1, Jae Yeong Cheon3, Sang Hoon Joo3*, Ji Man Kim2* and Hoi Ri Moon1*

Author Affiliations

1 Interdisciplinary School of Green Energy and KIER-UNIST Advanced Center for Energy, Ulsan National Institute of Science and Technology (UNIST), UNIST-gil 50, Ulsan, 689-798, Republic of Korea

2 Department of Chemistry, BK21 School of Chemical Materials Science and Department of Energy Science, Sungkyunkwan University, Suwon, 440-746, Republic of Korea

3 School of Nano-Bioscience and Chemical Engineering, KIER-UNIST Advanced Center for Energy and Low Dimensional Carbon Materials Center, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 689-798, Republic of Korea

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Nanoscale Research Letters 2012, 7:461  doi:10.1186/1556-276X-7-461

Published: 17 August 2012

Abstract

The preparation of redox-active metal-organic framework (ra-MOF)-supported Pd nanoparticles (NPs) via the redox couple-driven method is reported, which can yield unprotected metallic NPs at room temperature within 10 min without the use of reducing agents. The Pd@ra-MOF has been exploited as a precursor of an active catalyst for CO oxidation. Under the CO oxidation reaction condition, Pd@ra-MOF is transformed into a PdOx-NiOy/C nanocomposite to generate catalytically active species in situ, and the resultant nanocatalyst shows sustainable activity through synergistic stabilization.

Keywords:
redox reaction; metal-organic framework; CO oxidation; metal oxide; nanoparticle; palladium