title: Tetradecacobalt(II)-containing 36-niobate [Co14(OH)16(H2O)8Nb36O106]20- and its photocatalytic H2 evolution activity.
abstract: A gigantic Co14-containing 36-niobate, Na12K8[Co14(OH)16(H2O)8Nb36O106]⋅71H2O (1), has been prepared by the hydrothermal method and structurally characterized. Polyanion [Co14(OH)16(H2O)8Nb36O106](20-) (1 a) comprises a central Co7 core, surrounded by another seven isolated Co(2+) ions and six Lindqvist-type (Nb6O19) hexaniobate fragments. This is the first example of a high-nuclear cobalt-cluster-containing polyoxoniobate. The photocatalytic H2 evolution activity of Pt-loaded 1 was observed in methanol solution under irradiation using a 300 W Xe lamp.
authors.affiliation: Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004 (P.R. China).
authors.forename: Jingyang
authors.initials: J
authors.lastname: Niu
authors.forename: Fang
authors.initials: F
authors.lastname: Li
authors.forename: Junwei
authors.initials: J
authors.lastname: Zhao
authors.forename: Pengtao
authors.initials: P
authors.lastname: Ma
authors.forename: Dongdi
authors.initials: D
authors.lastname: Zhang
authors.forename: Bassem
authors.initials: B
authors.lastname: Bassil
authors.forename: Ulrich
authors.initials: U
authors.lastname: Kortz
authors.forename: Jingping
authors.initials: J
authors.lastname: Wang
mesh_terms: D002384:Catalysis; D003035:Cobalt / Q000737:chemistry*; D006859:Hydrogen / Q000737:chemistry*; D007477:Ions / Q000737:chemistry; D000432:Methanol / Q000737:chemistry; D008958:Models, Molecular; D009556:Niobium / Q000737:chemistry*; D055668:Photochemical Processes; D010984:Platinum / Q000737:chemistry; D014466:Ultraviolet Rays
chemical_list: D007477:Ions; D009556:Niobium; D003035:Cobalt; D010984:Platinum; D006859:Hydrogen; D000432:Methanol
keywords: H2 evolution; high-nuclear cobalt cluster; photocatalysis; polyoxometalate; polyoxoniobate