Abstract
We present a new strategy to strongly and effectively immobilize silver nanoparticles (AgNPs) on polyamide thin film composite membranes to endow antibacterial activity. This method relies on the immobilization of relatively large silica particles (SiO2, ~400nm in diameter), where AgNPs of ~30nm in diameter are tightly and densely bound (AgNP@SiO2), on the membrane surface using cysteamine as a covalent linker. The formation of multiple Ag-S chemical bonds between a "bumpy AgNP@SiO2 and the rough membrane surface provides a great leaching stability of AgNPs and AgNP@SiO2. AgNP@SiO2 particles were well distributed over the entire membrane surface without severe aggregation. The surface coverage of the membrane by AgNP@SiO2 was tuned by adjusting the deposition time and AgNP@SiO2 particle concentration. The AgNP@SiO2-immobilized membrane showed excellent antibacterial properties against Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus, even with a relatively low particle coverage. Importantly, the separation performance (water flux and salt rejection) of the membrane was not impaired by particle immobilization. These beneficial effects are attributed mainly to the sparse and good distribution of AgNP@SiO2, which can reinforce the antibacterial activity of AgNPs while having a negligible impact on the hydraulic resistance.
| Original language | English |
|---|---|
| Pages (from-to) | 80-91 |
| Number of pages | 12 |
| Journal | Journal of Membrane Science |
| Volume | 499 |
| DOIs | |
| Publication status | Published - 2016 Feb 1 |
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Keywords
- Antibacterial property
- Particle immobilization
- Polyamide thin film composite membrane
- Reverse osmosis
- Silver nanoparticle
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Materials Science(all)
- Biochemistry
- Filtration and Separation
Cite this
Immobilization of silver nanoparticle-decorated silica particles on polyamide thin film composite membranes for antibacterial properties. / Park, Sang Hee; Ko, Young Seon; Park, Sung Joon; Lee, Jong Suk; Cho, Jinhan; Baek, Kyung Youl; Kim, Il Tae; Woo, Kyoungja; Lee, Jung-hyun.
In: Journal of Membrane Science, Vol. 499, 01.02.2016, p. 80-91.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Immobilization of silver nanoparticle-decorated silica particles on polyamide thin film composite membranes for antibacterial properties
AU - Park, Sang Hee
AU - Ko, Young Seon
AU - Park, Sung Joon
AU - Lee, Jong Suk
AU - Cho, Jinhan
AU - Baek, Kyung Youl
AU - Kim, Il Tae
AU - Woo, Kyoungja
AU - Lee, Jung-hyun
PY - 2016/2/1
Y1 - 2016/2/1
N2 - We present a new strategy to strongly and effectively immobilize silver nanoparticles (AgNPs) on polyamide thin film composite membranes to endow antibacterial activity. This method relies on the immobilization of relatively large silica particles (SiO2, ~400nm in diameter), where AgNPs of ~30nm in diameter are tightly and densely bound (AgNP@SiO2), on the membrane surface using cysteamine as a covalent linker. The formation of multiple Ag-S chemical bonds between a "bumpy AgNP@SiO2 and the rough membrane surface provides a great leaching stability of AgNPs and AgNP@SiO2. AgNP@SiO2 particles were well distributed over the entire membrane surface without severe aggregation. The surface coverage of the membrane by AgNP@SiO2 was tuned by adjusting the deposition time and AgNP@SiO2 particle concentration. The AgNP@SiO2-immobilized membrane showed excellent antibacterial properties against Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus, even with a relatively low particle coverage. Importantly, the separation performance (water flux and salt rejection) of the membrane was not impaired by particle immobilization. These beneficial effects are attributed mainly to the sparse and good distribution of AgNP@SiO2, which can reinforce the antibacterial activity of AgNPs while having a negligible impact on the hydraulic resistance.
AB - We present a new strategy to strongly and effectively immobilize silver nanoparticles (AgNPs) on polyamide thin film composite membranes to endow antibacterial activity. This method relies on the immobilization of relatively large silica particles (SiO2, ~400nm in diameter), where AgNPs of ~30nm in diameter are tightly and densely bound (AgNP@SiO2), on the membrane surface using cysteamine as a covalent linker. The formation of multiple Ag-S chemical bonds between a "bumpy AgNP@SiO2 and the rough membrane surface provides a great leaching stability of AgNPs and AgNP@SiO2. AgNP@SiO2 particles were well distributed over the entire membrane surface without severe aggregation. The surface coverage of the membrane by AgNP@SiO2 was tuned by adjusting the deposition time and AgNP@SiO2 particle concentration. The AgNP@SiO2-immobilized membrane showed excellent antibacterial properties against Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus, even with a relatively low particle coverage. Importantly, the separation performance (water flux and salt rejection) of the membrane was not impaired by particle immobilization. These beneficial effects are attributed mainly to the sparse and good distribution of AgNP@SiO2, which can reinforce the antibacterial activity of AgNPs while having a negligible impact on the hydraulic resistance.
KW - Antibacterial property
KW - Particle immobilization
KW - Polyamide thin film composite membrane
KW - Reverse osmosis
KW - Silver nanoparticle
UR - http://www.scopus.com/inward/record.url?scp=84946426770&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84946426770&partnerID=8YFLogxK
U2 - 10.1016/j.memsci.2015.09.060
DO - 10.1016/j.memsci.2015.09.060
M3 - Article
VL - 499
SP - 80
EP - 91
JO - Jornal of Membrane Science
JF - Jornal of Membrane Science
SN - 0376-7388
ER -