Monodisperse Metal-Organic Framework Nanospheres with Encapsulated Core-Shell Nanoparticles Pt/Au@Pd@{Co2(oba)4(3-bpdh)2}4H2O for the Highly Selective Conversion of CO2 to CO

Xi Zhao; Haitao Xu; XiaoXiao Wang; Zhizhong Zheng; Zhenliang Xu; Jianping Ge

doi:10.1021/acsami.8b03561

Monodisperse Metal-Organic Framework Nanospheres with Encapsulated Core-Shell Nanoparticles Pt/Au@Pd@{Co₂(oba)₄(3-bpdh)₂}4H₂O for the Highly Selective Conversion of CO₂ to CO

ACS Appl Mater Interfaces. 2018 May 2;10(17):15096-15103. doi: 10.1021/acsami.8b03561. Epub 2018 Apr 18.

Authors

Xi Zhao¹, Haitao Xu¹, XiaoXiao Wang¹, Zhizhong Zheng¹, Zhenliang Xu¹, Jianping Ge²

Affiliations

¹ State Key Laboratory of Chemical Engineering, Membrane Science and Engineering R&D Lab, Chemical Engineering Research Center , East China University of Science and Technology , Shanghai 200237 , China.
² Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering , East China Normal University , Shanghai 200062 , China.

PMID: 29641173
DOI: 10.1021/acsami.8b03561

Abstract

A new microporous metal-organic framework (MOF) with formula {Co₂(oba)₄(3-bpdh)₂}4H₂O [oba = 4,4'-oxybis(benzoic acid); 3-bpdh = N, N'-bis-(1-pyridine-3-yl-ethylidene)-hydrazine] was assembled, and its morphology was found to undergo a microrod-to-nanosphere transformation with temperature variation. Core-shell Au@Pd functional nanoparticles (NPs) were successfully encapsulated in the center of the monodisperse nanospheres, and Pt NPs were well-dispersed and fully immobilized on the surface of Au@Pd@1Co to build the Pt/Au@Pd@1Co composites, which exhibited NPs catalytic activity for the reverse water gas shift reaction. The core-shell Au@Pd NPs in MOF significantly enchanced the CO selectivity of the catalyst, and the Pt NP loading on the surface of the nanosphere afforded a desirable CO₂ conversion.

Keywords: Au@Pd NP encapsulation; RWGS catalyst; imparting functionality; metal−organic framework; nanospheres.