Biosynthesis and antimicrobial activity of aluminium oxide nanoparticles using Lyngbya majuscula extract

Today, the synthesis of green metal nanoparticles is a potential approach in material science and nanotechnology. Aluminum nanoparticles (Al2O3NPs) were produced in a high-efficiency, cost-effective, green, and easy method using Lyngbyamajucula algae extract. Thealuminium oxide nanoparticles were evaluated using X-ray diffraction (XRD), Fourier transforms infrared spectroscopy (FT-IR), and scanning electron microscopy (SEM). This study also determines the antibacterial activity and minimum inhibitory concentration (MIC) of Al2O3 nanoparticles against pathogens such as Streptococcus aureus, Bacillus subtilis, Klebsiella pneumoniae, Salmonella paratyphi, Candida albicans, and Aspergillus flavus. The average crystallite size of Al2O3 nanoparticles was determined to be 326 nm and 382 nm in UV, 28 nm in XRD, and peaks at 407 and 428 in the FT-IR spectra, which were attributed to aluminium oxide stretching. Klebsiella pneumoniae and Candida albicans displayed a peak zone of inhibition (22 mm) in the antimicrobial experiment at a dose of 100 mg/ml of Al2O3 nanoparticles. Finally, aluminium oxide is a powerful antibacterial agent that may be used to treat a wide range of human illnesses. •Al2O3NPs synthesized using the L.majucula algae extract by greenapproach.•L.majuscula have shown tremendous potential as an agent for producing Al2O3NPs.•UV, FTIR, XRD, and SEM analyses were used to evaluate Al2O3NPs.•Al2O3NPs are a powerful antibacterial agent.