In situ DEPOSITION OF COPPER NANOPARTICLES ON POLYETHYLENE TEREPHTHALATE FILTERS AND ANTIBACTERIAL TESTING AGAINST Escherichia coli AND Salmonella enterica

Nguyen, Vinh Tien; Trinh, Khanh Son

doi:10.1590/0104-6632.20190364s20190208

Cited by 9 publications

(7 citation statements)

References 32 publications

(35 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In hybrids PET-inorganic bactericides representative are: PET-Ag nanoparticles [60][61][62][63][64][65][66][67], PET-silver salts [68,69], PET-TiO 2 [70][71][72][73], PET-Zn/ZnO 2 [74][75][76][77] and/or PET-Au [78]. In the set of PET-metal hybrids only a few PET-Cu hybrids have been reported [79][80][81][82].…”

Section: Introductionmentioning

confidence: 99%

Deposition of Copper on Polyester Knitwear Fibers by a Magnetron Sputtering System. Physical Properties and Evaluation of Antimicrobial Response of New Multi-Functional Composite Materials

et al. 2020

View full text Add to dashboard Cite

In this study, copper films were deposited by magnetron sputtering on poly(ethylene terephthalate) knitted textile to fabricate multi-functional, antimicrobial composite material. The modified knitted textile composites were subjected to microbial activity tests against colonies of Gram-positive (Staphylococcus aureus) and Gram-negative (Escherichia coli) bacteria and antifungal tests against Chaetomium globosum fungal molds species. The prepared samples were characterized by UV/VIS transmittance, scanning electron microscopy (SEM), tensile and filtration parameters and the ability to block UV radiation. The performed works proved the possibility of manufacturing a new generation of antimicrobial textile composites with barrier properties against UV radiation, produced by a simple, zero-waste method. The specific advantages of using new poly(ethylene terephthalate)-copper composites are in biomedical applications areas.

show abstract

Section: Introductionmentioning

confidence: 99%

Deposition of Copper on Polyester Knitwear Fibers by a Magnetron Sputtering System. Physical Properties and Evaluation of Antimicrobial Response of New Multi-Functional Composite Materials

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Jeyaraj et al ( 2015 ) suggest that the acid chemical treatment cleans the fiber before the impregnation of natural dyes. For a concentrated alkaline medium, Nguyen et al ( 2019 ) suggested that the chemical pretreatment in PET filters leads to a mass loss, degrading the fiber due to the concentrated medium.…”

Section: Resultsmentioning

confidence: 99%

Modification of polyester filters with synthesized copper nanoparticles for use as biocide in a real environment

et al. 2022

View full text Add to dashboard Cite

Antimicrobial air filtration techniques have recently been widely studied to enhance indoor air quality and mitigate hazardous airborne microorganisms. Here, CuNPs were incorporated into a commercial polyester fiber surface and Scanning Mobility Particle Sizer was used to measure the adherence between fibers and nanoparticles. An acid pretreatment previous CuNP incorporation was effective against the particle release and enhanced the adhesion between particle and fiber. CuNP was a mixture of Cu 0 and Cu 2 O with a diameter size of 90 nm (SEM micrographs). The permeability of the filter was low, in order of 10 –9 m 2 . The activity against pathogens was tested in loco in a real environment using a filtration prototype apparatus. It was observed that the presence of CuNP mitigated the fungi and bacteria growth not only on the surface but also reduced microbe concentrations after passing through the filter. These results show that CuNP can be used as an inhibitor of various microorganisms, making them a good alternative for indoor environments to control indoor air quality.

show abstract

“…In KOH solutions, PET is partially hydrolyzed into soluble ethylene glycol, potassium terephthalate, and short-chain fragments, hence reducing the weight of the filter and forming the holes on the PET fiber surface (Figure 4). These holes, where the polymer was hydrolytically cleaved, contain carboxylate and hydroxyl groups which may interact and bind copper ions more effectively than the untreated fiber surface [16].…”

Section: Resultsmentioning

confidence: 99%

Antibacterial Filtration Using Polyethylene Terephthalate Filters Coated with Copper Nanoparticles

Nguyen

Pham

et al. 2021

Journal of Nanomaterials

Self Cite

View full text Add to dashboard Cite

The purpose of this study is to produce antibacterial filters based on a commercial polyethylene terephthalate (PET) filter with pores larger than bacterial cells. The antibacterial agent was copper nanoparticles (CuNP) which were synthesized and deposited on the PET filter by reducing copper(II) ions using sodium hypophosphite (NaH2PO2) as the reducing agent and polyvinylpyrrolidone (PVP) as the capping agent. Scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy confirmed the presence of 150–300 nm CuNP on the surface of PET filters. We evaluated the amounts of deposited CuNP using a colorimetric method and the antibacterial-filtration capacity of CuNP/PET filters against Escherichia coli using the colony counting method. The reaction conditions were optimized successively using the one-factor-at-a-time approach for the concentration of copper precursor, the concentration of PVP, and the reaction time. The results showed that an initial 1 M CuSO4, 0.8% w / v PVP, and 10-20 min of reaction resulted in a CuNP/PET filter with the highest antibacterial activity: 5.2 log cfu/mL reduction for Escherichia coli and 5.6 log cfu/mL reduction or Staphylococcus aureus. SEM images demonstrated the damages of the bacterial cells after passing through the CuNP/PET filter. ICP-MS analysis of the first liter of filtrate showed that the copper concentration of released copper was 0.6 ± 0.1 ppm, which is below the WHO standard for drinking water. Therefore, these CuNP/PET filters are promising for point-of-use disinfection of water, where clean potable water is not sufficient.

show abstract

In situ DEPOSITION OF COPPER NANOPARTICLES ON POLYETHYLENE TEREPHTHALATE FILTERS AND ANTIBACTERIAL TESTING AGAINST Escherichia coli AND Salmonella enterica

Cited by 9 publications

References 32 publications

Deposition of Copper on Polyester Knitwear Fibers by a Magnetron Sputtering System. Physical Properties and Evaluation of Antimicrobial Response of New Multi-Functional Composite Materials

Deposition of Copper on Polyester Knitwear Fibers by a Magnetron Sputtering System. Physical Properties and Evaluation of Antimicrobial Response of New Multi-Functional Composite Materials

Modification of polyester filters with synthesized copper nanoparticles for use as biocide in a real environment

Antibacterial Filtration Using Polyethylene Terephthalate Filters Coated with Copper Nanoparticles

Contact Info

Product

Resources

About