Photobiologic-mediated fabrication of silver nanoparticles with antibacterial activity
Autor: | Jeong-Muk Lim, Jeong-Ho Lee, Keuk-Soo Bang, Yool-Jin Park, Youn-Jong Park, Byung-Taek Oh, Palanivel Velmurugan |
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Rok vydání: | 2016 |
Předmět: |
Silver
Dryopteris crassirhizoma Biophysics Metal Nanoparticles Nanotechnology 02 engineering and technology 010402 general chemistry 01 natural sciences Silver nanoparticle Metal Microscopy Electron Transmission Radiology Nuclear Medicine and imaging Fourier transform infrared spectroscopy Surface plasmon resonance Spectroscopy Radiation Radiological and Ultrasound Technology biology Chemistry Spectrum Analysis 021001 nanoscience & nanotechnology biology.organism_classification Photobiology Anti-Bacterial Agents 0104 chemical sciences Transmission electron microscopy visual_art visual_art.visual_art_medium 0210 nano-technology Antibacterial activity Nuclear chemistry |
Zdroj: | Journal of Photochemistry and Photobiology B: Biology. 162:93-99 |
ISSN: | 1011-1344 |
Popis: | We present the simple, eco-friendly synthesis of silver nanoparticles (AgNPs) using sunlight or green, red, blue, or white LED light together with Dryopteris crassirhizoma rhizome extract (DCRE) as the reducing and capping agent. The preliminary indication of AgNP production was a color change from yellowish green to brown after light exposure in the presence of DCRE. Optimization of parameters such as pH, inoculum dose, and metal ion concentration played an important role in achieving nanoparticle production in 30min. The spectroscopic and morphological properties of AgNPs were characterized using UV-Vis spectroscopy through the presence of a characteristic surface plasmon resonance (SPR) band for AgNPs, Fourier transform infrared spectroscopy (FT-IR), high-resolution transmission electron microscopy (HR-TEM), and X-ray diffraction (XRD). The FT-IR results indicated that the phytochemical present in DCRE was the probable reducing/capping agent involved in the synthesis of AgNPs, and light radiation enhanced nanoparticle production. HR-TEM revealed that the AgNPs were almost spherical with an average size of 5-60nm under all light sources. XRD studies confirmed the face cubic center (fcc) unit cell structure of AgNPs. The synthesized AgNPs showed good antimicrobial activity against Bacillus cereus and Pseudomonas aeruginosa. This study will bring a new insight in ecofriendly production of metal nanoparticles. |
Databáze: | OpenAIRE |
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