Synthesis, characterisation and antibacterial activity of PVA/TEOS/Ag-Np hybrid thin films

Bryaskova, Rayna; Pencheva, Daniela; Kale, Girish M.; Lad, Umesh; Kantardjiev, Todor

doi:10.1016/j.jcis.2010.04.091

Cited by 115 publications

(61 citation statements)

References 42 publications

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“…Higher antibacterial activity was observed against both gram-negative E. coli and gram-positive S. aureus, as well as against spores of B. subtilis and lowest antibacterial activity was detected for P. aeruginosa. These results were in good agreement with our previous investigations on the antibacterial activity of hybrid material based on PVA/AgNps/TEOS thin films [22]. It was found that the increased silver concentration did not affect the size of the inhibition zones.…”

Section: Resultssupporting

confidence: 93%

“…IR spectra were recorded in transmittance mode in the range from 400 to 4,000 cm −1 using PerkinElmer FTIR. [22].…”

Section: Methodsmentioning

confidence: 99%

“…The disks (diameter 6 mm, made from chromatographic paper) were impregnated with 5 μL AgNps/PVP solution on the leveled surface and left to dry at room temperature for 24 h. Then without any sterilization thus prepared disks were used for testing the biological properties of AgNps/PVP as described in CLSI M2-A9 standard, 2008 (Performance Standard for Antimicrobial Disk Susceptibility Tests) and used as a method for proving the antibacterial activity [22]. The results from the investigation are presented as an average value of the diameter of inhibition zones from two petri dishes for each strain.…”

Section: Measuring Of the Antimicrobial Activity Of The Pvp/agnpsmentioning

confidence: 99%

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Synthesis and comparative study on the antimicrobial activity of hybrid materials based on silver nanoparticles (AgNps) stabilized by polyvinylpyrrolidone (PVP)

et al. 2011

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Hybrid materials based on polyvinylpyrrolidone (PVP) with silver nanoparticles (AgNps) were synthesized applying two different strategies based on thermal or chemical reduction of silver ions to silver nanoparticles using PVP as a stabilizer. The formation of spherical silver nanoparticles with diameter ranging from 9 to 16 nm was confirmed by TEM analysis. UV-vis and FTIR spectroscopy were also applied to confirm the successful formation of AgNps. The antibacterial activity of the synthesized AgNPs/PVP against etalon strains of three different groups of bacteria-Staphylococcus aureus (S. aureus; grampositive bacteria), Escherichia coli (E. coli; gram-negative bacteria), Pseudomonas aeruginosa (P. aeruginosa; nonferment gram-negative bacteria), as well as against spores of Bacillus subtilis (B. subtilis) was studied. AgNps/PVP were tested for the presence of fungicidal activity against different yeasts and mold such as Candida albicans, Candida krusei, Candida tropicalis, Candida glabrata, and Aspergillus brasiliensis. The hybrid materials showed a strong antimicrobial effect against the tested bacterial and fungal strains and therefore have potential applications in biotechnology and biomedical science.

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Section: Resultssupporting

confidence: 93%

“…IR spectra were recorded in transmittance mode in the range from 400 to 4,000 cm −1 using PerkinElmer FTIR. [22].…”

Section: Methodsmentioning

confidence: 99%

Section: Measuring Of the Antimicrobial Activity Of The Pvp/agnpsmentioning

confidence: 99%

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Synthesis and comparative study on the antimicrobial activity of hybrid materials based on silver nanoparticles (AgNps) stabilized by polyvinylpyrrolidone (PVP)

et al. 2011

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“…Thermal behaviour of PVA based hybrid materials. The synthesis of hybrid materials on the basis of PVA and organoalkoxysilanes such as TEOS, APTEOS and MPTEOS was carried out via aqueous routes as described elsewhere [ 19 ]. The organoalkoxysilanes (TEOS, APTEOS and MPTEOS) were hydrolyzed in the presence of acid catalyst and substitution of alkoxy groups (OR) with hydroxyl groups (-OH) took place, leading to formation of silanol groups.…”

Section: Biosorption Experimentsmentioning

confidence: 99%

“…Amino functional mesoporous silica materials were used as efficient adsorbents of heavy metals such as Cu(II), Cd(II) and Ni(II) in waste water [ 18 ]. Recently, we synthesized novel hybrid materials based on PVA and different organosilanes [ 19 ].…”

mentioning

confidence: 99%

PVA -based Hybrid Materials for Immobilization of Trichosporon cutaneum R57 Efficient in Removal of Chromium Ions

Georgieva¹,

Bryaskova²,

Lazarova³

et al. 2013

Proceeding BAS

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New hybrid materials based on polyvinyl alcohol (PVA) and γ-aminopropyltriethoxyxilane (APTEOS), 3-mercaptopropyltriethoxysilane (MPTEOS) and tetraethoxysilane (TEOS) were prepared. To determine the thermal stability of the hybrid materials, thermogravimetric analysis (TGA) was performed. The new materials were tested for biofilm formation and biosorption studies. They were tested as matrices for immobilization of Trichosporon cutaneum R57 capable to remove Cr(VI) from aqueous solutions. The use of APTEOS and MPTEOS as precursors, incorporated new NH-and SH-bonds, which ensured additional binding places for cells immobilization. The presence of SHand NH-groups in the hybrid matrices resulted in apparently higher Cr(VI) sorption capacity of the immobilized Tr. cutaneum R57 cells due to the incorporation of additional adsorption sites in the matrix through the PVA functionalities. The synthesized PVA/APTEOS materials proved efficient for use in biosorption applications.

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Silver Composite Materials and Food Packaging

Cano

Chiralt

González‐Martínez

2018

Composites Materials for Food Packaging

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Synthesis, characterisation and antibacterial activity of PVA/TEOS/Ag-Np hybrid thin films

Cited by 115 publications

References 42 publications

Synthesis and comparative study on the antimicrobial activity of hybrid materials based on silver nanoparticles (AgNps) stabilized by polyvinylpyrrolidone (PVP)

Synthesis and comparative study on the antimicrobial activity of hybrid materials based on silver nanoparticles (AgNps) stabilized by polyvinylpyrrolidone (PVP)

PVA -based Hybrid Materials for Immobilization of Trichosporon cutaneum R57 Efficient in Removal of Chromium Ions

Silver Composite Materials and Food Packaging

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