Glycothermal synthesis and photoluminescence of Mg-Si modified Ce:YAG nanophosphors

The absorption spectrum of Ce in a YAG based host grown using the glycothermal method was modified using the addition of Mg-Si pairs. Photoluminescence intensity was dramatically improved by increasing...

PREPARATION AND CHARACTERIZATION OF AMINO-MODIFIED Fe3O4 MAGNETIC NANOCOMPOSITE PARTICLES BY ONE-STEP GLYCOTHERMAL METHOD

Amino-modified Fe 3 O 4 magnetic nanocomposite particles were prepared by one-step glycothermal method. The shape and morphology of Fe 3 O 4 particles change when a small amount of water is added as a co-solvent in the glycothermal method. The morphology and structure of the sample were characterized and measured by transmission electron microscopy (TEM), X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy. TEM images show that the morphology of the samples is from irregular polyhedron to spherical particles. Average diameter of particles is approximately 70/40/10 nm and more evenly distributed. XRD results show that the samples are cubic spinel structure. FTIR results show that a chemical bonds combination exists between the amino and iron oxide, nano-iron oxide are modified by the amino.