A new inorganic-organic nanohybrid based on a copper(II) semicarbazone complex and the PMo₁₂O₄₀³⁻ polyanion: Synthesis, characterization, crystal structure and photocatalytic activity for degradation of cationic dyes

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• 作者：Saeed Farhadi^a ; ^{sfarhadi1348@yahoo.com} ; Farzaneh Mahmoudi^a ; Michal Dusek^b ; Vaclav Eigner^b ; Monika Kucerakova^b
• 关键词：Inorganic&ndash ; organic hybrid ; Semicarbazone complex ; Nanohybrid ; Photodegradation ; Cationic dyes
• 刊名：Polyhedron
• 出版年：2017
• 出版时间：28 January 2017
• 年：2017
• 卷：122
• 期：Complete
• 页码：247-256
• 全文大小：3261 K
• 卷排序：122

文摘

A new inorganic–organic nanohybrid based on a Keggin-type polyoxomolybdate and a copper(II) semicarbazone complex, namely [Cu2(HL)2(PMo12O40)(OCH3)2(Cl)(H2O)]·8CH3OH·4H2O [HL = pyridine-2-carbaldehyde semicarbazone] (1) was synthesized by a sonochemical method. Single crystals of 1 were synthesized with the branched tube method. The nanohybrid 1 was characterized using FT-IR, PXRD, FESEM, TEM, EDX, UV–Vis, TG-DTA analysis and single-crystal X-ray diffraction. Single-crystal X-ray diffraction reveals that the PMo12O403− cluster acts as a bidentate inorganic ligand and coordinates two symmetrically equivalent [Cu(Cl)0.5(HL)(OCH3)(H2O)0.5] complexes. SEM and TEM images confirmed a highly porous plate-like morphology of the nanohybrid sample. To the best of our knowledge, 1 represents the first example of a hybrid based on POMs and semicarbazone Schiff base complexes. The photocatalytic properties of the nanohybrid 1 were investigated in detail and the results of the photocatalytic experiments show it can be used as an efficient and recoverable photocatalyst for the complete degradation of the cationic dyes methylene blue (MB) and rhodamin B (RhB).