Abstract
In the current study, an original, economic, and eco-friendly technique was used in the preparation of sodium vanadate nanorods from the leach liquor of fly ash. Most researchers recover vanadium oxide from fly ash rather than nano vanadium, and they also synthesized nano sodium vanadate by a hydrothermal method consuming high energy. Selective precipitation method using sodium carbonate was used in the preparation of sodium vanadate nanorods. The optimum conditions for the leaching process are temperature, time, L/S, and sodium carbonate amount. 70 °C, 60 min, 10/1, and 130 g/l, respectively. Under these conditions, approximately 80% of the vanadium in fly ash was leached. Sodium vanadate nanorod synthesis gives the best yield and purity of the final product by a simple process. Using X-ray diffraction (XRD), Field Emission Scanning Electron Microscope (FE-SEM), Fourier Transform Infrared (FTIR), and Dynamic Light Scattering (DLS), the synthesized NaV6O15 nano rods have been characterized.
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