A new nanohybrid material constructed from Keggin-type polyoxometalate and Cd(II) semicarbazone Schiff base complex with excellent adsorption properties for the removal of cationic dye pollutants

作者：Farhadi Saeed; Amini Mostafa M; Dusek Michal; Kucerakova Monika; Mahmoudi Farzaneh

来源：Journal of Molecular Structure, 2017, 1130: 592-602.

DOI：10.1016/j.molstruc.2016.10.081

• Nanohybrid material
• Polyoxometalate
• Single crystal
• Adsorption activity
• Cationic dye pollutants

A novel nanohybrid material containing a Cd(II) semicarbazone Schiff base complex and phosphomolybdic acid, [Cd(H2L+)(6)][H2L](+)(4)[PMo12O40](4)center dot 18CH(3)OH center dot 4H(2)O (1), [HL = pyridine-2-carbaldehyde semicarbazone] was prepared by a simple sonochemical route and characterized by (HNMR)-H-1, (CNMR)-C-13, FT-IR, UV-vis, PXRD, FESEM, TG-DTA and BET-BJH surface area analysis. Also the single crystal 1, was characterized by single-crystal X-ray diffraction analysis. It crystallizes in the triclinic system with space group P-1 and is assembled into 3D supramolecular structure via hydrogen intermolecular interactions. The nanohybrid 1 was tested for the adsorption and removal of organic dyes such as methylene blue (MB), Rhodamine B (RhB) and methyl orange (MO) from aqueous solutions. The effects of parameters such as the dosage of adsorbent, the initial concentration and pH of dye solution were investigated on the removal efficiency of methylene blue. The nanohybrid 1 exhibited excellent adsorption ability towards cationic dyes. Moreover, it could be easily separated from the reaction solution and recycled up to three times without significant loss of adsorption activity.

• 出版日期2017-2-15