Ag colloids and Ag clusters over EDAPTMS-coated silica nanoparticles: synthesis, characterization, and antibacterial activity against Escherichia coli

Rastogi, Shiva K.; Rutledge, Veronica; Gibson, Charlene M.; Newcombe, David; Branen, Josh R.; Branen, A. L.

doi:10.1016/j.nano.2010.11.003

Cited by 60 publications

(47 citation statements)

References 34 publications

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“…In addition, it has also shown that Ag ? binds to functional groups of proteins, resulting in protein denaturation (Rastogi et al 2011). To obtain high biocompatibility and optimal antibacterial properties of the new compounds, silver ions were embedded in materials with bio-properties (Ciobanu et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and antimicrobial activity of the micro/nano structured biogenic silver doped calcium phosphate

2015

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Scale formation in PVC pipelines reduces the water flow efficiency and enhances microbial contamination. A bio-based composite material comprising of silver doped calcium phosphate (Cp-Ag) was synthesized using a simple technique (photo catalysis) and herein, we report for the first time on preparation and evaluation of the antimicrobial efficacy of silver doped calcite extracted from the scale in drinking water pipe lines. Five concentrations of silver doped calcite materials viz,5, 10, 15, 20 and 25 ppm were prepared using chemical ammonia mediated synthetic method. The material Cp-Ag was characterized by using the techniques UV-Visible spectroscopy, X-ray diffraction, Fourier transform infrared spectroscopy, Scanning electron microscopy, Raman spectroscopy, Thermo gravimetric analysis, X-ray photo electron spectroscopy (XPS), Nuclear magnetic resonance spectrometer and X-ray flouresence microscopy (XRF). Typical rhombohedral structure of the silver doped calcite was observed. XRF and XPS studies confirmed the presence of both calcium and silver in the composite material (Cp-Ag). The silver doped calcite material exhibited enhanced inhibition against Escherichia coli and staphylococcus aureus (Kirby-Bauer discs diffusion assay) which is also dependent on the concentration of the Cp-Ag material.

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Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and antimicrobial activity of the micro/nano structured biogenic silver doped calcium phosphate

2015

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“…Type of nanoparticle Type of Salmonella Reference ASAP Nano-silver Solution Salmonella typhi (136) silver colloid nanoparticles Salmonella enteric (137) silver-silicon dioxide hybrid Salmonella enteric (137) ZnO nanoparticles Salmonella typhimurium (138) Spherical silver nanoparticles Salmonella typhimurium (139) Zinc oxide QuantumDots SalmonellaEnteritidis…”

Section: Metal Nanoparticles As Antisalmonellosis Agentsmentioning

confidence: 99%

Nanotechnology Tools for Efficient Antibacterial Delivery to Salmonella

Nokhodchi¹,

Ghafourian²,

Mohammadi³

2012

Salmonella - A Diversified Superbug

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“…This type of affinity has been used for adsorption of Au NPs or Ag NPs on support materials [30−33] . For example, Rastogi et al [30] prepared silica nanoparticle-supported Ag NPs by the reduction of Ag + in the presence of amino-functionalized SiO 2 nanoparticles. Mahanta and Valiyaveettil [33] reported that both Au NPs and Ag NPs can be adsorbed on amino-functionalized polyvinyl alcohol electrospun fibers obtained by esterification with lysine.…”

Section: Introductionmentioning

confidence: 99%

Antibacterial thermoplastic polyurethane electrospun fiber mats prepared by 3-aminopropyltriethoxysilane-assisted adsorption of Ag nanoparticles

Liu

et al. 2017

Chin J Polym Sci

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Antibacterial thermoplastic polyurethane (TPU) electrospun fiber mats were prepared by adsorption of Ag nanoparticles (Ag NPs) onto TPU/3-aminopropyltriethoxysilane (APS) co-electrospun fiber mats from silver sol. The use of APS can functionalize TPU fibers with amino groups, facilitating the adsorption of Ag NPs. The effects of pH of silver sol and APS content on Ag NP adsorption and antibacterial activity were investigated. Ag NP adsorption was evidenced by TEM, XPS and TGA. Significant Ag NP adsorption occurred at pH = 3−5. The main driving force for Ag NP adsorption is electrostatic interaction between -NH3 + of the fibers and -COO − derived from the -COOH group capped on the surfaces of Ag NPs. The antibacterial activity of the Ag NP-decorated TPU/APS fiber mats was investigated using both gram-negative Escherichia coli and gram-positive Bacillus subtilis. The antibacterial rate increases with increasing APS content up to 5% where the antibacterial rates against both types of bacteria are over 99.9%.

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Ag colloids and Ag clusters over EDAPTMS-coated silica nanoparticles: synthesis, characterization, and antibacterial activity against Escherichia coli

Cited by 60 publications

References 34 publications

Synthesis, characterization and antimicrobial activity of the micro/nano structured biogenic silver doped calcium phosphate

Synthesis, characterization and antimicrobial activity of the micro/nano structured biogenic silver doped calcium phosphate

Nanotechnology Tools for Efficient Antibacterial Delivery to Salmonella

Antibacterial thermoplastic polyurethane electrospun fiber mats prepared by 3-aminopropyltriethoxysilane-assisted adsorption of Ag nanoparticles

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