In SITU Phase Study of LA2O3+TIO2 Composite By XRD

Abstract

With growing emphasis on environmental sustainability, green synthesis methods for nanomaterials have emerged as viable alternatives to conventional chemical techniques. These eco-friendly approaches are particularly attractive for their low toxicity, cost-effectiveness, and minimal environmental impact. This study presents a green synthesis strategy for developing a La₂O₃:TiO₂ nanocomposite using the leaf extract of Dalbergia sissoo (Indian Rosewood) as a natural reducing and stabilizing agent. The synthesis followed a simple solution method, where the phytochemicals present in the D. sissoo extract acted as bioreductants to facilitate nanoparticle formation without toxic chemicals. Structural analysis via X-ray Diffraction (XRD) confirmed the formation of a composite material comprising anatase-phase TiO₂ and cubic-phase La₂O₃. The nanocomposite showed a reduced crystallite size compared to pure TiO₂, suggesting enhanced control over nucleation and growth due to the bioactive compounds in the extract. Fourier Transform Infrared Spectroscopy (FTIR) revealed absorption bands corresponding to hydroxyl, carbonyl, and other organic groups, indicating the involvement of plant-derived compounds in nanoparticle capping and stabilization. These surface-bound functional groups may also enhance reactivity and environmental interactions. Scanning Electron Microscopy (SEM) showed semi-spherical nanoparticles with uniform distribution and minimal agglomeration. This morphology reflects the effective role of the plant extract in directing particle shape and preventing clustering, contributing to an increased surface area. The successful integration of La₂O₃ into the TiO₂ matrix through a green synthesis route highlights the potential of plant-based methods for engineering advanced nanocomposites. This approach enables tailoring of material properties for targeted applications such as photocatalysis, sensing, and environmental remediation.

Keywords: LA2O3, TIO2, XRD