Biological applications of green synthesized lanthanum oxide nanoparticles via Couroupita guianensis abul leaves extract.

In this work, extract from leaves of Couroupita guianensis (C.guianensis) abul was used as a potential reducing agent for the synthesis of lanthanum oxide (LaO) nanoparticles (NPs). In addition, the morphology and several physicochemical properties of the LaO NPs were improved by introducing the ionic liquid of 1-butyl 3-methyl imidazolium tetra fluoroborate (BMIM BF) as a stabilizing agent. The structure of the LaO (without ionic liquid) and IL-LaO (with ionic liquid) NPs were analyzed by X-ray diffraction (XRD). The chemical composition of the synthesized NPs was analyzed using the energy dispersive X-ray (EDX) and X-ray photoelectron spectroscopy (XPS) studies. Optical and morphological studies were also performed. The antibacterial, antioxidant, anti-inflammatory, anti-diabetic and anticancer properties of the LaO and IL-LaO NPs were evaluated.