Paper Title
Silver Nanoparticles In Montmorillonite And Antibacterial Activity

Abstract
The Ag-MMT nanocomposite, formed from AgNO3/MMT suspension. AgNO3 and Urtica dioica leaf extract were used as a silver precursor and reducing agent, respectively. The nanocomposite was characterized by x-ray diffraction (XRD), fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), and UV-Vis spectroscopy. The XRD showed intercalation of Ag nanoparticles (Ag NPs) into the clay interlayer space. The UV-Vis indicated a strong surface plasmon resonance (SPR) absorption band in the UV region, resulting from metallic Ag NPs. The intensity of the SPR band increased with time in the AgNO3/MMT suspension. But the results was opposite in case of Ag+ solution. The stability of Ag NP in MMT was more than without support. These results showed that Ag NPs can be used as effective growth inhibitors in different biological systems. Keywords - Montmorillonite; Surface plasmon resonance; nanocomposite; Biomaterials.