TY  - JOUR
T1  - Synthesis and Antibacterial Activity of Silver/Montmorillonite Nanocomposites
AU - Ahmad, Mansor Bin AU - Shameli, Kamyar AU - Darroudi, Majid AU - Wan Yunus, Wan Md Zin AU - Ibrahim, Nor Azowa AU - Abdul Hamid, Azizah AU - Zargar, Mohsen 
JO  - Research Journal of Biological Sciences
VL  - 4
IS  - 9
SP  - 1032
EP  - 1036
PY  - 2009
DA  - 2001/08/19
SN  - 1815-8846
DO  - rjbsci.2009.1032.1036
UR  - https://makhillpublications.co/view-article.php?doi=rjbsci.2009.1032.1036
KW  - Silver nanoparticles
KW  -montmorillonite
KW  -nanocomposite
KW  -antibacterial activity
KW  -powder x-ray diffraction
KW  -muller-hinton agar
AB  - Silver nanoparticles (Ag-NPs) were successfully synthesized into the interlayer space of Montmorillonite (MMT) by chemical reduction method. AgNO<SUB>3</SUB> and NaBH<SUB>4 </SUB>were used as a silver precursor and reducing agent, respectively. The properties of Ag/MMT nanocomposites were studied as a function of the AgNO<SUB>3</SUB> concentration. The UV-vis spectra of synthesized Ag-NPs showed that the intensity of the maximum wavelength of the plasmon peaks increased with increasing AgNO<SUB>3</SUB> concentration. The crystalline structure of the Ag-NPs and basal spacing of MMT and Ag/MMT were also studied by Powder X-Ray Diffraction (PXRD). The antibacterial activity of Ag-NPs was investigated against gram-negative bacteria (<I>Escherichia coli</I>, <I>Escherichia coli</I> O157:H7 and <I>K. pneumonia</I>) and gram-positive bacterium (<I>Staphylococcus aureus</I>) by disk diffusion method using Muller-Hinton Agar (MHA) at different sizes of Ag-NPs. The smaller Ag-NPs were found to have significantly higher antibacterial activity. These results showed that Ag-NPs can be used as effective growth inhibitors in different biological systems, making them applicable to medical applications such as in surgical devices.
ER  -