Synthesis, Structure and Photocatalytic Properties of Polymolybdate-Based Complex Constructed by Pyridinium Ligand

Abstract

Abstract: In this paper, a new isopolymolybdate anion [δ-Mo₈O₂₆]^4--based complex [Co(bipbc)(δ-Mo₈O₂₆)_0.5(H₂O)₃] (bipbc=4,4′-bis[(4-carboxypyridino)methyl]biphenyl) was synthesized under hydrothermal conditions. The title complex shows a 1D chain, which consists of the cyclic dinuclear cobalt complexes [Co₂(bipbc)₂]⁴⁺ and [δ-Mo₈O₂₆]^4-clusters, and crystallizes in the monoclinic system, space group P2₁/n with a=1.147 9 (8) nm, b=1.440 9 (11) nm, c=2.082 9 (16) nm, β=93.469(2)°, V=3.438 8(4) nm³, Z=4, M_r=1 129.18, F(000)=2 204, μ=1.979 mm^-1, D_c=2.181 mg·m^-3, S=1.019, R₁=0.056 2, wR₂=0.137 7. The investigations on photocatalytic properties show that the title complex has photocatalytic activities toward the degradation of gentian violet (GV) and methylene blue (MB) under visible, even near-infrared and full spectrum light irradiation.

Key words: polyoxometalate, hydrothermal synthesis, pyridinium ligand, cobalt complex, organic dye, photocatalytic degradation

CLC Number:

WANG Jingyi, ZHANG Zhong, WANG Zilan, YU Xinying, YOU Junyi, ZHU Junyi, YANG Lin. Synthesis, Structure and Photocatalytic Properties of Polymolybdate-Based Complex Constructed by Pyridinium Ligand[J]. Journal of Synthetic Crystals, 2022, 51(7): 1227-1232.

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