研究目的

The main purpose of this work is to develop the structural and optical properties of the PVA film by embedded with different nanostructured metal oxide.

研究成果

The developing of the physiochemical properties of PVA film was successfully done by embedding with different nanostructured metal oxides (CdO, Al2O3, and Cu2O) to form nanocomposite films of PVA/metal oxide structure by using one-step via nanosecond pulsed laser ablation of Cadmium, copper, and aluminum target plates separately immersed in PVA solution. The changing of their structural, optical, and morphological properties of PVA film after embedding was appeared by using several techniques. In structural investigation, the XRD patterns confirm that metal ions (cadmium ions, Aluminum ion, and cupric ions) reduced to crystalline of the nanoparticles CdO, Al2O3, and Cu2O, respectively in PVA chain matrix due to the effect of the high intensity of pulsed laser ablation process. Besides, the FT-IR results confirm the interaction and the structural modification occurs between metal nanoparticles and the chains in PVA, which confirmed by appearing the main characteristic absorption peaks of each metal oxide in the finger-print region between 1000-400 cm-1. Also, the SPR peak and direct allowed interband transition of the embedded metal oxides are in a good agreement with previous values in literatures. Moreover, the emission spectra of the PVA film embedded metal oxides showed lower intensity that that the pure PVA film, which confirmed that the self-absorption in the PVA film which doped with metallic particles. Finally, it is concluded that this method could be used in the future to prepare different PVA film with different physicochemical properties based on chosen metal to be embedded with PVA film as each metal lead to vary their properties.

研究不足

The technical and application constraints of the experiments, as well as potential areas for optimization, are not explicitly mentioned in the paper.