Harnessing Aristolochia bracteolate bud extract for green synthesis and characterization of silver nanocomposite films: assessing their potent antimicrobial proficiency

Abstract

Nanoscience and technology play an essential role in different various scientific fields domains as since it offers unique properties and diverse industrial applications. This study introduces an efficient method to synthesize silver nanoparticles (AgNPs) using Aristolochia bracteolate bud extract. The synthesized AgNPs are embedded within Poly (methyl methacrylate) (PMMA) to prepare a sustainable nanocomposite film (Ag-PMMA NC). Characterization techniques reveal the distinct properties of AgNPs and Ag-PMMA NC. Thermogravimetric analysis (TGA) shows enhanced heat stability of the polymer with Ag nano-filler. UV-vis spectroscopy detects a peak for AgNPs at 440 nm, with an average size of 180.4 nm and a polydispersity index (PDI) of 0.389, indicating uniform size. Fourier transform infrared spectroscopy (FTIR) of Ag-PMMA exhibits characteristic peaks between 300-700 cm-−1, confirming Ag-PMMA interactions. Both green-synthesized AgNPs and the resulting Ag-PMMA NC film demonstrate potent antibacterial activity against Gram-positive Bacillus cereus (∼15 mm) and Gram-negative Escherichia coli (∼26 mm), showing promise for water purification and other applications.

Keywords

• Green synthesis
• AgNPs
• PMMA
• Ag-PMMA NC
• antibacterial activity