Ultrastable Polymolybdate-Based Metal–Organic Frameworks as Highly Active Electrocatalysts for Hydrogen Generation from Water

Two novel polyoxometalate (POM)-based metal-organic frameworks (MOFs), [TBA]3[ε-PMo(V)8Mo(VI)4O36(OH)4Zn4][BTB]4/3·xGuest (NENU-500, BTB = benzene tribenzoate, TBA(+) = tetrabutylammonium ion) and [TBA]3[ε-PMo(V)8Mo(VI)4O37(OH)3Zn4][BPT] (NENU-501, BPT = [1,1'-biphenyl]-3,4',5-tricarboxylate), were isolated. In these compounds, the POM fragments serving as nodes were directly connected with organic ligands giving rise to three-dimensional (3D) open frameworks. The two anionic frameworks were balanced by TBA(+) ions residing inside the open channels. They exhibit not only good stability in air but also tolerance to acidic and basic media. Furthermore, they were employed as electrocatalysts for the hydrogen…

• NN
  National Natural Science Foundation of China

  Awards: 21403033, 21401021, 21371099
• MO
  Ministry of Education of the People's Republic of China

  Award: 14QNJJ013
• MO
  Ministry of Science and Technology of the People's Republic of China

  Award: 2010CB635114
• CP
  China Postdoctoral Science Foundation

  Award: 2014M551154
• GO
  Government of Jiangsu Province
• PG
  People's Government of Jilin Province

  Awards: 20140520089JH, 20140203006GX
• NS
  Natural Science Foundation of Jiangsu Province

  Award: BK20130043