Ni(II)-metal-organic frameworks based on 1,4-phenylenedipropionic acid: Solvothermal syntheses, structures, and photocatalytic properties

作者：Sanram Surapoj; Boonmak Jaursup; Youngme Sujittra

来源：Polyhedron, 2016, 119: 151-159.

DOI：10.1016/j.poly.2016.08.044

• Metal-organic frameworks
• 1,4-Phenylenedipropionic acid
• Photocatalytic properties
• Solvothermal syntheses
• Nickel(II)

Four novel Ni(II)-metal-organic frameworks, namely [Ni(azp)(ppa)(H2O)(2)](n) (1), [Ni(tmdp)(ppa)(H2O)(2)](n) (2), {[Ni(bpetha)(ppa)]center dot 1.7H(2)O}(n) (3), and {[Ni(bpy)(H2O)(4)](ppa)}(n) (4) (azp = 4,4'-azodipyridine, H(2)ppa = 1,4-phenylenedipropionic acid, tmdp = 4,4'-trimethylenedipyridine, bpetha = 1,2-bis-(4-pyridyl)ethane, bpy = 4,4'-bipyridine) were synthesized and structurally characterized. With the differences in the length and flexibility of N,N'-donor coligands, Ni(II)-MOFs with the diversities of structural architectures and coordination modes of dicarboxylate ppa ligand were obtained. Compound 1 is 2D (4,4)-grid sheet whereas 2 shows 2-fold interpenetrating 2D (4,4)-layers. Compound 3 exhibits 3-fold interpenetrating coordination 3D framework with the alpha-Po topology while 4 shows 1D chain. Remarkably, compounds 1-4 exhibit energy band gaps of 3.27, 3.66, 3.58 and 3.36 eV, respectively. The photocatalytic activities of these materials for degradation of methylene blue (MB) were investigated with the degradation efficiencies within 90 min of 96.8%, 64.4%, 67.4%, and 75.0% for 1-4, respectively.

• 出版日期2016-11-24