Green Synthesis of TiO2 Nanoparticles Using Piper Longum Leaf Extract: Morphological, Optical and Antibacterial Characterization
Year: 2024
Type: article
Abstract: In this study, Titanium dioxide nanoparticles (TiO2 NPs) were synthesized using Piper longum leaf extract as both a capping and reducing agent through a green synthesis approach. The synthesized TiO2 NPs were thoroughly characterized using multiple techniques: X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), UV-Diffuse reflectance spectroscopy (UV-DRS), field emission scanning electron microscopy (FESEM), High-Resolution Transmission Electron Microscopy (HR-TEM), Brunauer-Emmett-Teller (BET) analysis, and X-ray photoelectron spectroscopy (XPS). XRD analysis confirmed the anatase phase of TiO2 with an average crystallite size of 57 nm. UV-DRS revealed a band gap of 3.39 eV, indicative of TiO2 nanoparticle formation. FTIR spectroscopy identified biomolecules such as flavonoids, phenol compounds, and tannins around the nanoparticles. SEM images showed a variety of shapes, including hexagons, pentagons, triangles, and tetragons. EDX analysis confirmed the presence of titanium, carbon, and oxygen, verifying the purity of the TiO2 nanoparticles. BET analysis determined a specific surface area of 59 m²/g. The antibacterial efficacy of the TiO2 nanoparticles was assessed using the agar well diffusion method, demonstrating significant antibacterial activity against Pseudomonas aeruginosa, Streptococcus mutans, Staphylococcus aureus, and Klebsiella pneumoniae. Additionally, the photocatalytic degradation of methylene blue dye by the TiO2 NPs achieved an efficiency of 96%.
Source: Materials science forum
DOI: 10.4028/p-8cplzy
Authors: A. Mary George Shemona, S. Kanagaprabha, H. Johnson Jeyakumar, S. Arul Vathana
Institutions: Manonmaniam Sundaranar University, Anna University, Chennai
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W4405819389