Tungsten hexacarbonyl-induced growth of nickel nanorods and nanocubes

摘要

We report that the Ni nanocrystals with rod-like and cubic shapes can be prepared in organic solution with the aid of tungsten hexacarbonyl at a relatively low reaction temperature of 150 degrees C. The prepared Ni nanorods have a fivefold twinned structure with an average diameter of about 11 nm and length varying from several tens of nanometers to 150 nm whereas the obtained Ni nanocubes have an average size of about 19.2 nm. Magnetic measurements indicate that the as-prepared Ni crystals exhibit typical room-temperature ferromagnetic properties. The synthetic strategy revealed in this study provides useful guidelines for the preparation of non-spherical Ni nanocrystals. (C) 2018 Elsevier B.V. All rights reserved.