An efficient synthesis route of Na2V6O16·nH2O nanowires in hydrothermal conditions

► An efficient route to prepare a 1D Na2V6O16·nH2O nanostructured compound. ► An environmentally friendly and one-step low-temperature hydrothermal synthesis. ► High-purity Na2V6O16·nH2O nanowires obtained in a monoclinic phase. ► An efficient method to the synthesis of different 1D nanostructured vanadates.