A new 2D Co5-cluster based MOF: Crystal structure, magnetic properties and electrocatalytic hydrogen evolution reaction

• Published in: Inorganic chemistry communications Vol. 95; pp. 73 - 77
• Main Authors: Tian, Jun-Wu, Fu, Meng-Xi, Huang, Dan-Dan, Wang, Xiao-Kun, Wu, Ya-Pan, Lu, Jack Y., Li, Dong-Sheng
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.09.2018
• Subjects: 3,5-bis(3′-carboxyphenyl)-1,2,4-triazole; Co-MOF; Crystal structure; Hydrogen evolution reaction; Magnetic properties; Hydrogen evolution reaction; 3,5-bis(3′-carboxyphenyl)-1,2,4-triazole; Co-MOF; Crystal structure; Magnetic properties
• ISSN: 1387-7003; 1879-0259
• DOI: 10.1016/j.inoche.2018.07.009

A new 2D MOF with unique [Co5(μ3-OH)2]8+ subunit, [Co5(μ3-OH)2(bcpt)4(bib)2] (1) (H2bcpt = 3,5-bis(3′-carboxyphenyl)-1,2,4-triazole, bib = 1,4-bis(1-imidazoly)benzene) is prepared, which not only shows weak antiferromagnetic interaction between the adjacent Co(II) ion, but also exhibits efficient electrocatalytic hydrogen evolution reaction by the integration with graphene (Gr). A new 2D Co-MOF with [Co5(μ3-OH)2]8+ subunit has been prepared and characterized. And the optimal Gr(4 wt%)&Co-MOF composite shows excellent electrocatalytic activity for hydrogen evolution reaction (HER). [Display omitted] •One new 2D Co-MOF with [Co5(μ3-OH)2]8+ subunit has been synthesized and characterized.•The Gr(4 wt%)&Co-MOF composite exhibits a small overpotential and a low Tafel slop for HER.•The magnetic properties of Co-MOF indicates antiferromagnetic exchange between the adjacent five Co(II) ions.