Synthesis of new nanocomposite vanadium containing phosphomolybdovanadate / polyvinyl alcohol as a nanocatalyst for germination of barley seeds

In this work, a new organic-inorganic hybrid nanocomposite PMoV2/PVA was synthesized on the basis of Keggin-type polyoxometalate (N(tBu)4)4HPMo10V2O40 abbreviated as PMoV2) and polyvinyl alcohol (PVA). We prepared this nanocomposite by reaction of PMoV2 with PVA in the presence of water, via a sol–gel method. The results of XRD, and SEM analysis method indicated the successful composition of the materials. The XRD studies showed that the average crystallite size of the composite particles was estimated to be about 38 nm, which confirmed by the results of SEM. The influence of the new a new organic-inorganic hybrid nanocomposite PMoV2/PVA in the germination of barley seeds was investigated. In order to compare, several polyoxometalates with different concentrations used to obtain their effects on growth factors of barley seeds. From the obtained results, it is found that by applying new nanocomposite PMoV2/PVA with 10 µM and 100 µM concentrations the most preferred results achieved.