KH2PO4 + Host Matrix (Alumina / SiO2) Nanocomposite: Raman Scattering Insight

We report on the synthesis and Raman scattering characterization of composite materials based on the hostnanoporous matrices filled with nanostructured KH
2
PO
4
(KDP) crystal. Silica (SiO
2
) and anodized aluminium oxide (AAO) were used as host matrices with various pore diameters, inter-pore spacing and morphology. The structure of the nanocomposites was investigated by X-ray diffraction and scanning electron microscopy. Raman scattering reveals the creation of one-dimensional nanostructured KDP inside the SiO
2
matrix. We clearly observed the stretching ν
1
, ν
3
, and bending ν
2
vibrations of PO
4
tetrahedral groups in the Raman spectrum of SiO
2
+ KDP. In Raman scattering spectra of AAO + KDP nanocomposite, the broad fluorescence background of AAO matrix dominates to a great extent, hindering thus the detecting of the KDP compound spectral response.