Investigation and Characterization of Eco-Technological Synthesis of Spherical TiO Nanoparticles from Thalassia hemprichi and Analysis of Biomedical Properties.

In this present investigation, plant-mediated synthesis of titanium oxide (TiO) nanoparticles was synthesized from seagrass (Thalassia hemprichi) using the hot plate combustion method (HPCM). Synthesized TiO nanoparticles optical, functional, structural, and morphology properties were analyzed by UV-visible spectroscopy, Fourier transform infrared spectroscopy (FT-IR), powder X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDX). SEM analysis confirmed the spherical shape of the TiO nanoparticles were observed in various sizes, viz., 50 nm and 78 nm. The XRD analysis revealed that TiO nanoparticles have a body-centred cubic structure without a secondary phase. Green synthesized TiO nanoparticle applications were studied against the antimicrobial, antioxidant, anticancer, and photocatalytic activity. The pathogenic bacterial strains, including Staphylococcus epidermidis, Staphylococcus aureus, Klebsiella pneumonia, and Pseudomonas aeruginosa, were tested against TiO nanoparticles; the maximum level of activity was seen at a concentration of 50 µg/mL. The antioxidant assays were performed against TiO nanoparticles, and inhibitory concentration values (IC) were 40.28 μg/mL of the 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay, 52.04 µg/mL of the acrylamide tertiary butyl sulfonic acid (ATBS) assay, and 16.91 µg/mL of the metal chelating assay. The anticancer activity was analyzed against MCF-7 cancer cells using TiO nanoparticles, and the IC value showed 64.14 µg/mL concentration. An eco-friendly and convenient method was formulated for the production of titanium oxide nanoparticles utilizing seagrass extract. The potential employment of TiO involves water treatment, biomedicine, biosensors, and nanotechnology.