Copper doped sodium titanate nanotubes and nanoribbons were prepared via in-situ and ex-situ methods. In the applied in situ method, titanate nanotubes were grown from anatase TiO2 doped with Cu2+, while in the ex situ method, titanate nanotubes were exposed to aqueous solution of Cu2+ species. By correlating XRD, electron microscopy, magnetic susceptibility, and electron paramagnetic resonance measurements, we found that in the samples prepared via the ex situ doping method, sub-10 nm CuO nanoparticles grow on the inner/outer surface of nanotubes/nanoribbons.
COBISS.SI-ID: 21989927
In this article, we highlight some of the advantages of sol-gel routes based on selected examples. The first part reviews some recent developments in the synthesis of ternary metal oxide nanoparticles by surfactant-free nonaqueous sol–gel routes. In the second part of the paper we present original results regarding the synthesis of dilute magnetic semiconductor TiO2 nanoparticles doped with cobalt and iron. The structural characterization as well as the magnetic properties with special attention to the doping efficiency is discussed.
COBISS.SI-ID: 22008359