Biomimetic synthesis of Ag@Fe bimetallic nanoparticles from Palmyra sprouts extract and their antibacterial, photocatalytic degradation of malachite green

• Published in: Inorganic chemistry communications 2024-03, Vol.161, p.112132, Article 112132
• Main Authors: Sudhakar, Chinnappan, Selvam, Kandasamy, Poonkothai, Mani, Ranjitha, Shanmugam
• Format: Article
• Language: English
• Subjects: Antibacterial activity; Bimetallic nanoparticles; Biomimetic synthesis; Palmyra sprout; Photocatalytic decolorization
• ISSN: 1387-7003; 1879-0259
• DOI: 10.1016/j.inoche.2024.112132

[Display omitted] •Ag@Fe bimetallic nanoparticles were successfully synthesized using Palmyra sprouts extracts by single-step.•FT-IR, FESEM-EDS, XRD, VSM, TEM, and UV–Vis analysis were applied to the characterization of bimetallic nanoparticles.•The antibacterial activity of Ag@Fe BMNPs showed a significant against S. aureus and P. aeruginosa.•Photocatalytic degradation of malachite green dye using Ag@Fe bimetallic nanoparticles was studied. The present study aimed to biomimetic synthesis of silver-iron bimetallic nanoparticles (Ag@Fe BMNPs) was achieved by bio-reduction of silver nitrate (AgNO3) and Ferric(III) nitrate Fe(NO3)3 using Palmyra sprout (PS) extract. The synthesized PS-Ag@Fe BMNPs were characterized by UV–Visible spectrophotometer, Fourier-transform infrared (FT-IR) spectroscopy, High-resolution scanning electron microscope (HR-TEM), Field-emission scanning electron microscope (FE-SEM), vibrating sample magnetometer (VSM), and X-ray diffraction (XRD), respectively. The UV–Vis spectra of PS-Ag@Fe BMNPs showed a broad absorption peak at 310 nm and FT-IR represented bioactive functional groups. The results of the XRD pattern confirmed the crystalline nature of PS-Ag@Fe BMNPs. HR-TEM and FE-SEM results prove the spherical shape of PS-Ag@Fe BMNPs and the presence of Ag and Fe peaks at 3.0, 6.4, and 7.2 keV, respectively. The photocatalytic efficiency of PS-Ag@Fe BMNPs against malachite green (MG) showed 91.23 % decolorization within 180 min of direct sunlight irradiation. In addition, antibacterial properties of PS-Ag@Fe BMNPs against human bacterial pathogens was evaluated. Hence, the green synthesized PS-Ag@Fe BMNPs were confirmed to be a potential substance for biomedical and environmental remediation.