Synthesis of CuS nanorods by one-step reaction

A one-step, solid-state reaction route was developed to synthesize copper sulfide (CuS) nanorods via grinding Cu(NO3)2·3H2O and Na2S·9H2O in existence of ethylenediamine tetraacetic acid disodium salt (Na2EDTA·2H2O) at ambient temperature. The as-prepared CuS nanorods have diameters of 5∼7 nm, lengths up to 40∼70 nm. Transmission electron microscopy (TEM) and X-ray diffraction (XRD) were used to characterize the obtained product. A possible reaction mechanism was discussed at the end of this article.