抄録
A novel route for controlling the growth of silver nanowires and nanocables has been developed via a simple soft chemistry method using thermal reduction of the metal ions and hydrolysis of titanium alkoxide. The nanoporous template formed by the controlled hydrolysis and condensation of Ti(OC4H9)4 provides an effective matrix for the growth of nanowires using silver nitrate as the starting compounds and DMF as the solvent and reducing agent at low temperature(~70oC). Transmission electron microscopy (TEM) studies show that the silver nanowires can be as long as 20μm with the diameter in the range of 15~30nm. The energy dispersive spectroscopy (EDS) result indicates that the products are easy separated from the mixture without any TiO2 nanoparticle. The sheath thickness of the Ag-SiO2 nanocables could be readily controlled just by changing the concentration and/or hydrolysis time of tetraethylorthosilicate (TEOS).
