A facile hydrothennal route to the large-scale synthesis of CoWO4 nanorods

Single-crystalline CoWO4 nanorods with average diameter of 20 nm and lengths of 100 to 300 runt have been successfully synthesized by a hydrothen-nal method using only CoCl2 and Na2WO4 as reaction reagents and distilled water as solvents. The structure and morphology of the nanorods were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), selected-area electron diffraction (SAED) and high-resolution TEM (HRTEM). This facile method does not need any seed, catalyst, surfactant, or template, thus is promising for large-scale and low-cost production with high-quality. (c) 2007 Elsevier B. V. All rights reserved.