Sodium dodecyl sulfate-assisted synthesis of CoWO4 nanorods

CoWO₄ nanorods were synthesized at 453 K for 12 h by a hydrothermal technology from Na₂WO₄ · 2H₂O and CoCl₂ · 6H₂O in the presence of sodium dodecyl sulfate (SDS). The as-synthesized CoWO₄ nanorods were characterized by various techniques of X-ray diffraction, transmission electron microscopy, scanning electron microscopy, and X-ray detector. Luminescent properties of the samples were measured at room temperature. The results showed that CoWO₄ products are nanorods with diameters of about 20 nm, and lengths ranging between 100 and 200 nm. CoWO₄ nanorods display a very strong PL peak at 453 nm with the excitation wavelength 300 nm. The possible formation mechanism of CoWO₄ nanorods was suggested.