Microwave-assisted synthesis, characterization and antibacterial activity of Ag/ZnO nanoparticles supported bentonite clay

Motshekga, Sarah C.; Ray, Suprakas Sinha; Onyango, Maurice S.; Momba, Maggy Ndombo Benteke

doi:10.1016/j.jhazmat.2013.08.074

Cited by 169 publications

(70 citation statements)

References 46 publications

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“…Their nanoparticles exhibited more pronounced bacterial effects towards a broad range of microorganisms. This small particle size allowed for better penetration and interaction with the bacteria, disrupting the cell membrane and hence their effectiveness as bactericidal materials was increased compared to the membrane that lacked nanoparticle modified materials [38]. Further, ZnO-NRs arrays wrapped around the fibrils narrowed the space between each fibril, resulting in a sieving filtration.…”

Section: Antibacterial Propertiesmentioning

confidence: 99%

ALD-seeded hydrothermally-grown Ag/ZnO nanorod PTFE membrane as efficient indoor air filter

Feng

Low

et al. 2017

Journal of Membrane Science

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A B S T R A C TIt has been well recognized that there are a number of indoor contaminants including particulate matter, gaseous pollutants and microbials. The removal of indoor contaminants often requires multiple layers of various air filters. Herein, we report on a multifunctional air purifying filter produced by the hydrothermal growth of ZnO nanorod-wrapped PTFE nanofibers, constructed of nanostructured Ag deposited on the ZnO nanorods with a hierarchical structure for gas contaminant removal. Atomic layer deposition (ALD) was used to seed a layer of ZnO nanoseeds onto the PTFE fibrils which were then subjected to a hydrothermal reaction to form ZnO nanorods. Ag nanoparticels were subsequently assembled on the surface of the ZnO nanorods via a silver electroless deposition reaction. The resulting composite membrane exhibited an excellent dynamic antibacterial property of~100% and a formaldehyde degradation rate of 60%. Compared with the pristine membrane, the gas permeation of the composite membrane increased from 227. . The successful fabrication of this composite membrane with remarkable antibacterial and excellent formaldehyde degradation performance may provide a new route for the preparation of indoor air purification filters.

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Section: Antibacterial Propertiesmentioning

confidence: 99%

ALD-seeded hydrothermally-grown Ag/ZnO nanorod PTFE membrane as efficient indoor air filter

Feng

Low

et al. 2017

Journal of Membrane Science

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“…The mixtures are then formed into PLA/TBMA [15] composite films by using the casting molding. The composite films are evaluated in terms of chemical structure via FT-IR, thermal behavior via DSC, and antimicrobial efficacy [16,17] against S. aureus and E. coli [18][19][20]. …”

Section: Introductionmentioning

confidence: 99%

Polylactic Acid Antimicrobial Composite Films: Preparation and Antibacterial Efficacy

Lou¹,

Chen²,

Lee³

et al. 2017

dtetr

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ABSTRACT This study aims to produce antimicrobial biodegradable composite films. Polylactic acid (PLA) and poly[2-(tert-butylaminoethyl)methacrylate] (TBMA) are combined by using casting molding. The Fourier transform infrared spectroscopy (FT-IR) and differential scanning calorimetry (DSC) are used to evaluate the physical properties of the PLA/TBMA composite films. The antimicrobial tests are then used to assess the antibacterial efficacy of PLA/TBMA composite films against Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli). The FT-IR results indicate that the incorporation of TBMA does not influence the chemical structure of the composite films as the composites are a product of physical blending. The DSC results indicate that the incorporation of TBMA causes the crystallization temperature of PLA to increase. Finally, the composite films have proven to be bacteriostatic against S. aureus, and antibacterial against E. coli.

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“…To attribute antibacterial properties to an inert material, it is necessary to treat it with metallic ions with bacteriostatic nature, such as silver, 1-4 copper 4-8 and zinc. 1,9,10 Among them, copper is one of the most promising because of its biocompatibility and high affinity for the pathogenic microorganisms.…”

Section: Introductionmentioning

confidence: 99%

“…3 These metals/clay composites usually prepared by ion exchange of positively charged metal ions and alkali ions present in a surface layer of clay or by synthesis of nanoparticles and immobilisation them on the clay by various techniques such as ion exchange processes and sol-gel. 1,5,6,8,9,16 Nevertheless, many of these techniques typically entail multiple steps combined with ultrasonication and stirring that take long hours or even days followed by chemical reduction of the precursor metal salts.…”

Section: Introductionmentioning

confidence: 99%

Antibacterial Activity of Copper-doped Montmorillonite Nanocomposites Prepared by Alkaline Ion Exchange Method

Pourabolghasem¹,

Ghorbanpour²,

Shayegh³

2016

JPS

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Microwave-assisted synthesis, characterization and antibacterial activity of Ag/ZnO nanoparticles supported bentonite clay

Cited by 169 publications

References 46 publications

ALD-seeded hydrothermally-grown Ag/ZnO nanorod PTFE membrane as efficient indoor air filter

ALD-seeded hydrothermally-grown Ag/ZnO nanorod PTFE membrane as efficient indoor air filter

Polylactic Acid Antimicrobial Composite Films: Preparation and Antibacterial Efficacy

Antibacterial Activity of Copper-doped Montmorillonite Nanocomposites Prepared by Alkaline Ion Exchange Method

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