A new decavanadate polyoxovanadate nanocluster: synthesis, characterization and rapid adsorption of methylene blue

Abstract

A new decavanadate polyoxovanadate nanocluster, [2-ampH]₆[V₁₀O₂₈]∙2H₂O (1), was synthesized through reaction between ammonium vanadate and 2-aminopyridine at pH = 2. Nanocluster 1 was characterized by IR, elemental analysis, and X-ray crystallography. 1 was found to adsorb and desorb dyes and may have widespread application in wastewater treatment. The utility of 1 for adsorption of methylene blue was studied. The adsorbed dyes can be easily desorbed, and 1 has full efficiency after five cycles.

Keywords:

• Polyoxovanadate
• decavanadate
• adsorption
• methylene blue

Acknowledgements

M. Amini thanks the Research Council of the University of Maragheh for financial support of this work. The authors acknowledge Scientific and Technological Research Application and Research Center, Sinop University, Turkey, for the use of the Bruker D8 QUEST diffractometer.