Jump to main content
Jump to site search


Three 3D Co(II) cluster-based MOFs constructed from polycarboxylate acids and bis(imidazole) ligands and their derivative: magnetic properties and catalytic performance for ORR

Abstract

Three 3D polymeric complexes containing polynuclear Co(II) units, Co3(bpda)3(bib)2]•H2O (1), [Co5(OH)2(H2O)2(bpda)4(bib)2]•2H2O (2), and [Co2(OH)(bib)(bpt)]•H2O (3) (H2bpda= biphenyl-2,4’-dicarboxylic acid, H3bpt = biphenyl-3,4’,5-tricarboxylic acid, bib=1,4-bis(1-imidazolyl)benzene), have been prepared by urothermal synthesis. Complex 1 exhibits an unusual (4,6)-connected 3D network based on binuclear Co(II) cluster and Co2+ centers bridged by bpda2- and bib ligands. Complex 2, containing a novel pentanuclear Co(II) cluster, features a porous 3D MOF with regular nanosized tunnel. Complex 3 contains an interesting tetranuclear Co(II) cluster and displays an amazing 3D porous MOF built from double-layered 2D [Co2(μ3-OH)(bpt)3]n networks pillared by two rows of bib spacers. In the title complexes, polycarboxylate acids serve to construct and stabilize the polynuclear Co(II) clusters, while bis(imidazole)s help to expand the dimensionality of MOFs. Complexes 2 and 3 show antiferromagnetic properties. The porous nanocarbon material derived from complex 3 displays good ORR electrocatalytic activity. Compound 3 with high surface area, high yield, high purity, high chemical stability, was used as precursor to fabricate Co, N-codoped porous carbon materials by simple carbonization under Ar atmosphere. The catalytic properties of the Co, N-codoped porous carbon material derived from complex 3 (denoted as CoNC-3) as an ORR electrocatalyst were studied. The CoNC-3 displays superior electrocatalytic performances for ORR.

Back to tab navigation

Supplementary files

Publication details

The article was received on 30 May 2019, accepted on 08 Aug 2019 and first published on 09 Aug 2019


Article type: Paper
DOI: 10.1039/C9DT02278C
Dalton Trans., 2019, Accepted Manuscript

  •   Request permissions

    Three 3D Co(II) cluster-based MOFs constructed from polycarboxylate acids and bis(imidazole) ligands and their derivative: magnetic properties and catalytic performance for ORR

    M. Yang, L. Chen, R. Ma, J. Cai, Y. Shi and S. Lin, Dalton Trans., 2019, Accepted Manuscript , DOI: 10.1039/C9DT02278C

Search articles by author

Spotlight

Advertisements