Eco-friendly synthesis of silver nanoparticles using green algae (Caulerpa serrulata): reaction optimization, catalytic and antibacterial activities.

摘要: Stable colloidal silver nanoparticles (AgNPs) were synthesized using Caulerpa serrulata (green marine algae) aqueous extract as an efficient reducing and stabilizing agent. This method is considered to be a sustainable alternate the more complicated chemical procedures. To achieve optimization synthesis of AgNPs, several effects such concentration, contact time, pH values, temperature examined. The AgNPs characterized by UV–Vis spectroscopy, FT-IR, XRD, HR-TEM. showed intense surface plasmon resonance band at 412 nm optimal conditions (20% (v/v) 95 °C). TEM reveal that higher concentration leading formation spherical with average particle size 10 ± 2 nm. excellent catalytic reduction activity Congo red (CR) dye from solutions. degradation percentage CR accelerated increasing either NaBH4 or dosage. (e.g., 10Ag-95) exhibited highest activity. reaction kinetics was found pseudo first order respect concentration. Moreover, displayed antibacterial lower against Staphylococcus aureus, Pseudomonas aeruginosa, Shigella sp., Salmonella typhi, Escherichia coli may good alternative therapeutic approach. outcomes current study confirmed had awesome guarantee for application in catalysis wastewater treatment.