Synthesis and characterization of silver/montmorillonite/ chitosan bionanocomposites by chemical reduction method and their antibacterial activity.
Silver nanoparticles (AgNPs) of a small size were successfully synthesized using the wet chemical reduction method into the lamellar space layer of montmorillonite/chitosan (MMT/Cts) as an organomodified mineral solid support in the absence of any heat treatment. AgNO3, MMT, Cts, and NaBH4 were used...
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| Format: | Article |
| Language: | English |
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Dove Medical Press
2011
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| Online Access: | http://psasir.upm.edu.my/id/eprint/24804/ |
| _version_ | 1848845136163766272 |
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| author | Shameli, Kamyar Ahmad @ Ayob, Mansor Zargar, Mohsen Wan Yunus, Wan Md. Zin Ibrahim, Nor Azowa Shabanzadeh, Parvaneh Moghaddam, Mansour Ghaffari |
| author_facet | Shameli, Kamyar Ahmad @ Ayob, Mansor Zargar, Mohsen Wan Yunus, Wan Md. Zin Ibrahim, Nor Azowa Shabanzadeh, Parvaneh Moghaddam, Mansour Ghaffari |
| author_sort | Shameli, Kamyar |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Silver nanoparticles (AgNPs) of a small size were successfully synthesized using the wet chemical reduction method into the lamellar space layer of montmorillonite/chitosan (MMT/Cts) as an organomodified mineral solid support in the absence of any heat treatment. AgNO3, MMT, Cts, and NaBH4 were used as the silver precursor, the solid support, the natural polymeric stabilizer, and the chemical reduction agent, respectively. MMT was suspended in aqueous AgNO3/Cts solution. The interlamellar space limits were changed (d-spacing = 1.24-1.54 nm); therefore, AgNPs formed on the interlayer and external surface of MMT/Cts with d-average = 6.28-9.84 nm diameter. Characterizations were done using different methods, ie, ultraviolet-visible spectroscopy, powder X-ray diffraction, transmission electron microscopy, scanning electron microscopy, energy dispersive X-ray fluorescence spectrometry, and Fourier transform infrared spectroscopy. Silver/montmorillonite/chitosan bionanocomposite (Ag/MMT/Cts BNC) systems were examined. The antibacterial activity of AgNPs in MMT/Cts was investigated against Gram-positive bacteria, ie, Staphylococcus aureus and methicillin-resistant S. aureus and Gram-negative bacteria, ie, Escherichia coli, E. coli O157:H7, and Pseudomonas aeruginosa by the disc diffusion method using Mueller Hinton agar at different sizes of AgNPs. All of the synthesized Ag/MMT/Cts BNCs were found to have high antibacterial activity. These results show that Ag/MMT/Cts BNCs can be useful in different biological research and biomedical applications, including surgical devices and drug delivery vehicles. |
| first_indexed | 2025-11-15T08:42:01Z |
| format | Article |
| id | upm-24804 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T08:42:01Z |
| publishDate | 2011 |
| publisher | Dove Medical Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-248042014-09-12T03:52:31Z http://psasir.upm.edu.my/id/eprint/24804/ Synthesis and characterization of silver/montmorillonite/ chitosan bionanocomposites by chemical reduction method and their antibacterial activity. Shameli, Kamyar Ahmad @ Ayob, Mansor Zargar, Mohsen Wan Yunus, Wan Md. Zin Ibrahim, Nor Azowa Shabanzadeh, Parvaneh Moghaddam, Mansour Ghaffari Silver nanoparticles (AgNPs) of a small size were successfully synthesized using the wet chemical reduction method into the lamellar space layer of montmorillonite/chitosan (MMT/Cts) as an organomodified mineral solid support in the absence of any heat treatment. AgNO3, MMT, Cts, and NaBH4 were used as the silver precursor, the solid support, the natural polymeric stabilizer, and the chemical reduction agent, respectively. MMT was suspended in aqueous AgNO3/Cts solution. The interlamellar space limits were changed (d-spacing = 1.24-1.54 nm); therefore, AgNPs formed on the interlayer and external surface of MMT/Cts with d-average = 6.28-9.84 nm diameter. Characterizations were done using different methods, ie, ultraviolet-visible spectroscopy, powder X-ray diffraction, transmission electron microscopy, scanning electron microscopy, energy dispersive X-ray fluorescence spectrometry, and Fourier transform infrared spectroscopy. Silver/montmorillonite/chitosan bionanocomposite (Ag/MMT/Cts BNC) systems were examined. The antibacterial activity of AgNPs in MMT/Cts was investigated against Gram-positive bacteria, ie, Staphylococcus aureus and methicillin-resistant S. aureus and Gram-negative bacteria, ie, Escherichia coli, E. coli O157:H7, and Pseudomonas aeruginosa by the disc diffusion method using Mueller Hinton agar at different sizes of AgNPs. All of the synthesized Ag/MMT/Cts BNCs were found to have high antibacterial activity. These results show that Ag/MMT/Cts BNCs can be useful in different biological research and biomedical applications, including surgical devices and drug delivery vehicles. Dove Medical Press 2011 Article PeerReviewed Shameli, Kamyar and Ahmad @ Ayob, Mansor and Zargar, Mohsen and Wan Yunus, Wan Md. Zin and Ibrahim, Nor Azowa and Shabanzadeh, Parvaneh and Moghaddam, Mansour Ghaffari (2011) Synthesis and characterization of silver/montmorillonite/ chitosan bionanocomposites by chemical reduction method and their antibacterial activity. International Journal of Nanomedicine, 6 (1). pp. 271-284. ISSN 1176-9114; ESSN:1178-2013 http://www.dovepress.com/ 10.2147/IJN.S16043 English |
| spellingShingle | Shameli, Kamyar Ahmad @ Ayob, Mansor Zargar, Mohsen Wan Yunus, Wan Md. Zin Ibrahim, Nor Azowa Shabanzadeh, Parvaneh Moghaddam, Mansour Ghaffari Synthesis and characterization of silver/montmorillonite/ chitosan bionanocomposites by chemical reduction method and their antibacterial activity. |
| title | Synthesis and characterization of silver/montmorillonite/ chitosan bionanocomposites by chemical reduction method and their antibacterial activity. |
| title_full | Synthesis and characterization of silver/montmorillonite/ chitosan bionanocomposites by chemical reduction method and their antibacterial activity. |
| title_fullStr | Synthesis and characterization of silver/montmorillonite/ chitosan bionanocomposites by chemical reduction method and their antibacterial activity. |
| title_full_unstemmed | Synthesis and characterization of silver/montmorillonite/ chitosan bionanocomposites by chemical reduction method and their antibacterial activity. |
| title_short | Synthesis and characterization of silver/montmorillonite/ chitosan bionanocomposites by chemical reduction method and their antibacterial activity. |
| title_sort | synthesis and characterization of silver/montmorillonite/ chitosan bionanocomposites by chemical reduction method and their antibacterial activity. |
| url | http://psasir.upm.edu.my/id/eprint/24804/ http://psasir.upm.edu.my/id/eprint/24804/ http://psasir.upm.edu.my/id/eprint/24804/ |