Amine-functionalized, silver-exchanged zeolite NaY: preparation, characterization and antibacterial activity
Amine-functionalized, silver-exchanged zeolite NaY (ZSA) were prepared with three different concentrations of 3-aminopropyltriethoxysilane (APTES) (0.01, 0.20 and 0.40 M) and four different concentrations of silver ions (25%, 50%, 100% and 200% from zeolite cation exchange capacity (CEC)). The sampl...
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my.utm.687672017-11-20T08:52:15Z http://eprints.utm.my/id/eprint/68767/ Amine-functionalized, silver-exchanged zeolite NaY: preparation, characterization and antibacterial activity Mohd. Hanim, Siti Aishah Nik Malek, Nik Ahmad Nizam Ibrahim, Zaharah Q Science (General) Amine-functionalized, silver-exchanged zeolite NaY (ZSA) were prepared with three different concentrations of 3-aminopropyltriethoxysilane (APTES) (0.01, 0.20 and 0.40 M) and four different concentrations of silver ions (25%, 50%, 100% and 200% from zeolite cation exchange capacity (CEC)). The samples were characterized by Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy-dispersive X-ray (EDX), surface area analysis, thermogravimetric analysis (TGA) and zeta potential (ZP) analysis. The FTIR results indicated that the zeolite was functionalized by APTES and that the intensity of the peaks corresponding to APTES increased as the concentration of APTES used was increased. The antibacterial activities of the silver-exchanged zeolite NaY (ZS) and ZSA were studied against Escherichia coli ATCC11229 and Staphylococcus aureus ATCC6538 using the disc diffusion technique (DDT) and minimum inhibitory concentration (MIC). The antibacterial activity of ZSA increased with the increase in APTES on ZS, and E. coli was more susceptible towards the sample compared to S. aureus. The FESEM micrographs of the bacteria after contact with the ZSA suggested different mechanisms of bacterial death for these two bacteria due to exposure to the studied sample. The functionalization of ZS with APTES improved the antibacterial activity of the silver-zeolite, depending on the concentration of silver ions and APTES used during modification. 2016 Article PeerReviewed Mohd. Hanim, Siti Aishah and Nik Malek, Nik Ahmad Nizam and Ibrahim, Zaharah (2016) Amine-functionalized, silver-exchanged zeolite NaY: preparation, characterization and antibacterial activity. Applied Surface Science, 360 . pp. 121-130. https://doi.org/10.1016/j.apsusc.2015.11.010 DOI:10.1016/j.apsusc.2015.11.010 |
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Q Science (General) Mohd. Hanim, Siti Aishah Nik Malek, Nik Ahmad Nizam Ibrahim, Zaharah Amine-functionalized, silver-exchanged zeolite NaY: preparation, characterization and antibacterial activity |
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Amine-functionalized, silver-exchanged zeolite NaY (ZSA) were prepared with three different concentrations of 3-aminopropyltriethoxysilane (APTES) (0.01, 0.20 and 0.40 M) and four different concentrations of silver ions (25%, 50%, 100% and 200% from zeolite cation exchange capacity (CEC)). The samples were characterized by Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy-dispersive X-ray (EDX), surface area analysis, thermogravimetric analysis (TGA) and zeta potential (ZP) analysis. The FTIR results indicated that the zeolite was functionalized by APTES and that the intensity of the peaks corresponding to APTES increased as the concentration of APTES used was increased. The antibacterial activities of the silver-exchanged zeolite NaY (ZS) and ZSA were studied against Escherichia coli ATCC11229 and Staphylococcus aureus ATCC6538 using the disc diffusion technique (DDT) and minimum inhibitory concentration (MIC). The antibacterial activity of ZSA increased with the increase in APTES on ZS, and E. coli was more susceptible towards the sample compared to S. aureus. The FESEM micrographs of the bacteria after contact with the ZSA suggested different mechanisms of bacterial death for these two bacteria due to exposure to the studied sample. The functionalization of ZS with APTES improved the antibacterial activity of the silver-zeolite, depending on the concentration of silver ions and APTES used during modification. |
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Article |
author |
Mohd. Hanim, Siti Aishah Nik Malek, Nik Ahmad Nizam Ibrahim, Zaharah |
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Mohd. Hanim, Siti Aishah Nik Malek, Nik Ahmad Nizam Ibrahim, Zaharah |
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Mohd. Hanim, Siti Aishah |
title |
Amine-functionalized, silver-exchanged zeolite NaY: preparation, characterization and antibacterial activity |
title_short |
Amine-functionalized, silver-exchanged zeolite NaY: preparation, characterization and antibacterial activity |
title_full |
Amine-functionalized, silver-exchanged zeolite NaY: preparation, characterization and antibacterial activity |
title_fullStr |
Amine-functionalized, silver-exchanged zeolite NaY: preparation, characterization and antibacterial activity |
title_full_unstemmed |
Amine-functionalized, silver-exchanged zeolite NaY: preparation, characterization and antibacterial activity |
title_sort |
amine-functionalized, silver-exchanged zeolite nay: preparation, characterization and antibacterial activity |
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2016 |
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http://eprints.utm.my/id/eprint/68767/ https://doi.org/10.1016/j.apsusc.2015.11.010 |
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