Electrochemical and magnetic properties of inorganic polymers constructed from Mn(II)/Co(II)-substituted heteropolymolybdates |
| |
Authors: | Xizheng Liu Guanggang Gao Lin Xu Fengyan Li Li Liu Ning Jiang Yanyan Yang |
| |
Institution: | Key Laboratory of Polyoxometalate Science of Ministry of Education, Department of Chemistry, Northeast Normal University,No. 5268 Remin Street, Changchun, Jilin 130024, PR China |
| |
Abstract: | Two inorganic polymers constructed from transition metal-substituted heteropolymolybdates, (CH3)3NH]5nPMo11MO39]n·xH2O (M = Mn2+, x = n (1); M = Co2+, x = 2n (2)), have been synthesized in aqueous solutions and characterized by IR, TGA, and single-crystal X-ray diffraction analysis. Crystal data: 1, monoclinic, C2/c, a = 17.1322(7) Å, b = 17.6062(7) Å, c = 17.6459(7) Å, β = 103.2220(10)°, V = 5181.5(4) Å3 and Z = 4; 2, triclinic, P-1, a = 12.1986(7) Å, b = 13.0973(7) Å, c = 16.7736(9) Å, α = 97.1810(10)°, β = 98.5040(11)°, γ = 96.3920(10)°, V = 2606.5(2) Å3 and Z = 2. The cyclic voltammograms of 1 and 2 show irreversible redox peaks in DMF solution and there are three reversible couples after addition of 0.1 M H2SO4 aqueous solutions. The cyclic voltammograms of 1/2-modified carbon paste electrode (1-CPE/2-CPE) show two consecutive reversible two-electron redox processes. Especially, 2-CPE shows good electrocatalytic activity toward the reduction of nitrite and hydrogen peroxide. The magnetic properties of the two complexes have also been investigated. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|