Photoelectrocatalytic properties and bactericidal activities of silver-treated carbon nanotube/titania composites

Zhang, Fengjun; Chen, Ming-Liang; Oh, Won‐Chun

doi:10.1016/j.compscitech.2011.01.008

Cited by 27 publications

(8 citation statements)

References 32 publications

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“…Microscopy technique reveals that the improper coatings due to irregular spherical particles and interconnectivity between ternary components are also the major ambiguity in the lower rate of bacterial photoinactivation. Ag anchored on the surfaces of CNTs/TiO 2 composite reveal that Ag atoms are anchored on the surface of the CNT network with some irregular distribution in Ag particles . This is due to the heating of the composites at the higher temperature; which may generate blocked micropores and mesopores in aggregates.…”

Section: Introductionmentioning

confidence: 99%

Ag Nanoparticles Connected to the Surface of TiO₂ Electrostatically for Antibacterial Photoinactivation Studies

Deshmukh

Mullani

Koli

et al. 2018

Photochem & Photobiology

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Supported silver nanoparticles (Ag NPs) were prepared by chemical reduction method with a sol-gel method. The structure, morphology, and interconnectivity of Ag/TiO nanocomposites (NCs) were analyzed using different instrumental techniques. Transmission electron microscopy reveals the Ag NPs have uniformly distributed and anchored on the surface of TiO . The reduction in electron-hole recombination was measured by Photoluminescence measurements lead, to an increased photocatalytic inactivation of bacteria. Increase in the amount of Ag NPs on TiO resulted in a slight decrease in optical band gap energy of TiO . The effect of Ag NPs content on the photocatalytic properties of TiO for inhibition of bacteria in visible light irradiation was studied. Furthermore, the antibacterial activity of Ag/TiO NCs in the presence of UVA light was studied against gram-positive Staphylococcus aureus and gram-negative Escherichia coli bacterial strain by plate count method. Lower values of minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of the catalysts were observed and used to determine the tolerance factor which is shown bactericidal nature of the NCs. Subsequently, time-killing assay of Ag/TiO NCs was shown dynamics of antimicrobial activity. These multifold antibacterial studies exhibited potent antibacterial nature of the NCs and employed in the wider range of biomedical fields.

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Section: Introductionmentioning

confidence: 99%

Ag Nanoparticles Connected to the Surface of TiO₂ Electrostatically for Antibacterial Photoinactivation Studies

Deshmukh

Mullani

Koli

et al. 2018

Photochem & Photobiology

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“…The examinations have been conducted in regards to confirm that the spectra of the resultant nanocomposite presents strong broad similarities to silver compounds being known to have strong antibacterial characteristics. The antibacterial test of the composite was confirmed using tests against the Gram-negative bacteria (E.Coli) and as well Grampositive bacteria (S. aureus) [4].…”

Section: Nanocomposite Preparationmentioning

confidence: 99%

Antibacterial properties of silver nanoparticles depositions on cellulose nanofibers surfaces using reducing agents

Pană¹

2019

Ann_UGAL_Math_Phys_Mec

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Polymer cellulose nanofibers have been heavely utilized in the biomedical industry in order to create and produce artificial tissue, bio-sensing devices and biocompatible wearable materials. Because cellulose itself presents important characteristics for medical applications along the lines of biodegradability and biocompatibility (i.e. it makes an ideal component for temporary anchorage devices and mini-implants fixed to bones) and due to the fact that the cellulose does not natively presents antibacterial properties, an antibacterial cellulose based nanocomposite was conceived by depositions of silver nanoparticles (AgNPs) on cellulose nanofibers. In order to examine the properties of the newly created nanomaterial a scanning electron microscope and a Xray diffraction detector were used. The examinations have been conducted in regards to confirm that the spectra of the resultant nanocomposite presents strong broad similarities to silver compounds being known to have strong antibacterial characteristics. The antibacterial test of the composite was confirmed using tests against the Gram-negative bacteria (E.Coli) and as well Gram-positive bacteria (S. aureus). The samples have shown bactericidal activities and bacterial inhibition efficiencies. Silver nanoparticles on cellulose nanofibers display distinguished antibacterial features for the purpose of medical applications among others utilizations. In this study we present the bacterial growth inhibition properties of cellulose nanofibers silver nanoparticles nanocomposite.

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“…Electrophoretic deposition has been shown to produce coatings of sufficient quality for use in the production of dye-sensitised solar cells. It is well suited for the production of the high-purity coatings required for such applications [44][45][46][47].…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic activity of electrophoretically deposited (EPD) TiO2 coatings

et al. 2015

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This paper describes the application of electrophoretic deposition for air pollution removal using anatase as a photoactive coating. In this study, the anatase form of TiO 2 has been applied to (1) fluorine-doped tin oxide (FTO)-coated glass; (2) 304L stainless steel; and (3) titanium substrates using isopropanol and acetylacetonebased solutions at 20, 40, 60 and 80 V. In order to increase the strength of the substrate-anatase interface without transforming the phase into rutile, samples were calcined at 450°C for 2 h. The resulting coatings were characterised by Raman spectroscopy, X-ray diffraction, non-contact optical profilometry and scanning electron microscopy.The photocatalytic activity of the deposited coatings were evaluated in the gas phase for nitrogen dioxide (NO 2 ) removal by electron ionisation mass spectrometry, whilst irradiated by light of wavelength 376-387 nm for 100 min. Anatase phase titania supported on a FTO-coated glass substrate showed the highest photoactivity for NO 2 remediation. This was attributed to the formation of a threedimensional nanostructure with properties determined by the deposition conditions. This work provides routes for the development of low-cost and large area photoactive coatings for pollution control.

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Photoelectrocatalytic properties and bactericidal activities of silver-treated carbon nanotube/titania composites

Cited by 27 publications

References 32 publications

Ag Nanoparticles Connected to the Surface of TiO₂ Electrostatically for Antibacterial Photoinactivation Studies

Ag Nanoparticles Connected to the Surface of TiO₂ Electrostatically for Antibacterial Photoinactivation Studies

Antibacterial properties of silver nanoparticles depositions on cellulose nanofibers surfaces using reducing agents

Photocatalytic activity of electrophoretically deposited (EPD) TiO2 coatings

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Photoelectrocatalytic properties and bactericidal activities of silver-treated carbon nanotube/titania composites

Cited by 27 publications

References 32 publications

Ag Nanoparticles Connected to the Surface of TiO2 Electrostatically for Antibacterial Photoinactivation Studies

Ag Nanoparticles Connected to the Surface of TiO2 Electrostatically for Antibacterial Photoinactivation Studies

Antibacterial properties of silver nanoparticles depositions on cellulose nanofibers surfaces using reducing agents

Photocatalytic activity of electrophoretically deposited (EPD) TiO2 coatings

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Product

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Ag Nanoparticles Connected to the Surface of TiO₂ Electrostatically for Antibacterial Photoinactivation Studies

Ag Nanoparticles Connected to the Surface of TiO₂ Electrostatically for Antibacterial Photoinactivation Studies