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. (28th January 2017)

• Record Type: Journal Article
• Authors: Farhadi, Saeed; Mahmoudi, Farzaneh; Dusek, Michal; Eigner, Vaclav; Kucerakova, Monika
• Is Part Of: Polyhedron. Volume 122(2017)
• Page Start: 247
• Page End: 256
• Publication Date: 2017-01-28
• Subjects: Inorganic–organic hybrid -- Semicarbazone complex -- Nanohybrid -- Photodegradation -- Cationic dyes; Chemistry, Inorganic -- Periodicals; Chimie inorganique -- Périodiques; Organometaalverbindingen; Anorganische chemie; 546.05
• DOI: 10.1016/j.poly.2016.11.034
• Languages: English
• ISSNs: 0277-5387

Abstract

Graphical abstract: A new inorganic–organic nanohybrid based on a Keggin-type polyoxomolybdate and a copper(II) semicarbazone complex, namely [Cu2 (HL)2 (PMo12 O40 )(OCH3 )2 (Cl)(H2 O)]·8CH3 OH·4H2 O [HL = pyridine-2-carbaldehyde semicarbazone] (1 ) was synthesized by a sonochemical method and it has been used as an efficient and recoverable photocatalyst for the complete degradation of cationic dyes. Abstract: A new inorganic–organic nanohybrid based on a Keggin-type polyoxomolybdate and a copper(II) semicarbazone complex, namely [Cu2 (HL)2 (PMo12 O40 )(OCH3 )2 (Cl)(H2 O)]·8CH3 OH·4H2 O [HL = pyridine-2-carbaldehyde semicarbazone] (1 ) was synthesized by a sonochemical method. Single crystals of1 were synthesized with the branched tube method. The nanohybrid1 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 PMo12 O40 3− cluster acts as a bidentate inorganic ligand and coordinates two symmetrically equivalent [Cu(Cl)0.5 (HL)(OCH3 )(H2 O)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 nanohybrid1 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).