Synthesis of a new polyoxometalate compound containing boron and determination of its structure and catalytic activities

In this study, a new polyoxometalate, K16[Ni(H2O)6]2[BW12O40]4·48H2O (1) has been synthesized at room temperature and characterized by X-ray single crystal diffractions, elemental analyses, IR spectra, and thermo gravimetric analyses (TGA), UV-vis. Crystal structure analysis reveals that compound 1 exhibits a supramolecular structure containing one Keggin-type [BW12O40]5- heteropoly anion. The catalytic properties of this molecule for the degradation of Methyl red (MR), Rhodamine B (RhB), Methyl orange (MO) and Congo red (CR) were investigated. The results of this study do not only provide a general controllable synthesis approach for polyoxometalate compound but also promote promising catalyst candidates for dye degradation.