Correction: Photocatalytic antibacterial performance of TiO2 and Ag-doped TiO2 against S. aureus. P. aeruginosa and E. coli

Gupta, Kiran; Singh, Ramveer; Pandey, Ashutosh; Pandey, Anjana

doi:10.3762/bjnano.11.43

Cited by 19 publications

(17 citation statements)

References 8 publications

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“…Synthesis of Nanoparticles. TiO 2 NPs were synthesized using an acid-catalyzed sol-gel process, as described elsewhere [29]. First, 1 mL of TiCl 4 was slowly added dropwise to 10 mL EtOH (Merck, 99.8%) under vigorous stirring.…”

Section: Methodsmentioning

confidence: 99%

“…A significant antibacterial activity was observed on gram-negative bacteria in both doped NPs. It may be that gram-positive bacteria have a stronger molecular network in the cell wall than gram-negative bacteria and silver ions may enter the cell walls of grampositive bacteria [29]. The percent viability of bacteria was exponentially reduced as the concentration of Ag doping increased in the TiO 2 and ZnO matrix.…”

Section: Optical Properties As Shown Inmentioning

confidence: 99%

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Antibacterial Activity of Ag-Doped TiO₂ and Ag-Doped ZnO Nanoparticles

Nigussie

Tesfamariam

Tegegne

et al. 2018

International Journal of Photoenergy

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We report in this paper antibacterial activity of Ag-doped TiO2 and Ag-doped ZnO nanoparticles (NPs) under visible light irradiation synthesized by using a sol-gel method. Structural, morphological, and basic optical properties of these samples were investigated using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray (EDX) spectrum, and UV-Vis reflectance. Room temperature X-ray diffraction analysis revealed that Ag-doped TiO2 has both rutile and anatase phases, but TiO2 NPs only have the anatase phase. In both ZnO and Ag-doped ZnO NPs, the hexagonal wurtzite structure was observed. The morphologies of TiO2 and ZnO were influenced by doping with Ag, as shown from the SEM images. EDX confirms that the samples are composed of Zn, Ti, Ag, and O elements. UV-Vis reflectance results show decreased band gap energy of Ag-doped TiO2 and Ag-doped ZnO NPs in comparison to that of TiO2 and ZnO. Pathogenic bacteria, such as Staphylococcus aureus, Pseudomonas aeruginosa, and Escherichia coli, were used to assess the antibacterial activity of the synthesized materials. The reduction in the viability of all the three bacteria to zero using Ag-doped ZnO occurred at 60 μg/mL of culture, while Ag-doped TiO2 showed zero viability at 80 μg/mL. Doping of Ag on ZnO and TiO2 plays a vital role in the increased antibacterial activity performance.

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Section: Methodsmentioning

confidence: 99%

Section: Optical Properties As Shown Inmentioning

confidence: 99%

Antibacterial Activity of Ag-Doped TiO₂ and Ag-Doped ZnO Nanoparticles

Nigussie

Tesfamariam

Tegegne

et al. 2018

International Journal of Photoenergy

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“…Its high refractive index and transparency for visible light have made it a widely used painting material, and its biological properties have made it a promising material for biomedical applications [1][2][3]. Recently, its strong oxidizing power under ultraviolet (UV) irradiation attracts great attention due to the applications of antibacterial, deodorizing, and remediation of environmental pollutions [4][5][6][7][8][9][10]. TiO 2 has a conduction band edge potential lower than that of hydrogen revolution and valence band edge potential higher than that of oxygen revolution.…”

Section: Introductionmentioning

confidence: 99%

Strongly Enhancing Photocatalytic Activity of TiO2 Thin Films by Multi-Heterojunction Technique

Cheng

Hung

et al. 2018

Catalysts

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The photocatalysts of immobilized TiO2 film suffer from high carrier recombination loss when compared to its powder form. Although the TiO2 with rutile-anatase mixed phases has higher carrier separation efficiency than those with pure anatase or rutile phase, the single junction of anatase/rutile cannot avoid the recombination of separated carriers at the interface. In this study, we propose a TiO2/SnO2/Ni multi-heterojunction structure which incorporates both Schottky contact and staggered band alignment to reduce the carrier recombination loss. The low carrier recombination rate of TiO2 film in TiO2/SnO2/Ni multi-heterojunction structure was verified by its low photoluminescence intensity. The faster degradation of methylene blue for TiO2/SnO2/Ni multi-junctions than for the other fabricated structures, which means that the TiO2 films grown on the SnO2/Ni/Ti coated glass have a much higher photocatalytic activity than those grown on the blank glass, SnO2-coated and Ni/Ti-coated glasses, demonstrated its higher performance of photogenerated carrier separation.

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“…In the last decade, there has been an intensive study of materials with well-doped and non-doped nanostructure TiO 2 [1][2][3][4][5][6][7][8][9][10][11][12][13], such as the stability of the structure of TiO 2 whose chemistry, physics, optics [1], the electrical quantities [1][2], and a promising material as a low cost semiconductor [3][4][5][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

“…The rutile type also has a tetragonal crystal structure and is used as a white pigment in paint, while the brookite-type crystal structure is othorombik [1]. Synthesis of nanostructure TiO 2 can be done through several methods, e.g hydrothermal [3], sol-gel [3,5,9,10,13], nonaqueous (non-sol-gel [2], sputtering thin films [7], and simple colloidal crystal templating [11]. The research on the effects of heat treatment on the particle size and surface area of TiO 2 as a solar cell material has been done, but the effect of stirring time yet many do [14,15].…”

Section: Introductionmentioning

confidence: 99%

THE EFFECT OF STIRRING TECHNIQUES ON TiO2 NANOPARTICLE SIZE BY USINGA WET CHEMICAL METHOD

Gunanto

Sinaga

Pratala³

2018

jsmi

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THE EFFECT OF STIRRING TECHNIQUES ON TiO 2 NANOPARTICLE SIZE BY USING A WET CHEMICAL METHOD. The TiO 2 nanoparticles were synthesized by a wet chemical method. The influence of stirring on the particle size was investigated. In the first technique, the stirring was done during the process of mixing, while in the second technique the stirring was done after the mixing process is finished. The particle size was characterised using XRD, TEM, and PSA, while the BET surface area used. The first technique, obtained a fairly small grain size of about 12-50 nm, while the second technique obtained particle sizes between 1300-1600 nm.

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Correction: Photocatalytic antibacterial performance of TiO₂ and Ag-doped TiO₂ against S. aureus. P. aeruginosa and E. coli

Cited by 19 publications

References 8 publications

Antibacterial Activity of Ag-Doped TiO₂ and Ag-Doped ZnO Nanoparticles

Antibacterial Activity of Ag-Doped TiO₂ and Ag-Doped ZnO Nanoparticles

Strongly Enhancing Photocatalytic Activity of TiO2 Thin Films by Multi-Heterojunction Technique

THE EFFECT OF STIRRING TECHNIQUES ON TiO2 NANOPARTICLE SIZE BY USINGA WET CHEMICAL METHOD

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Correction: Photocatalytic antibacterial performance of TiO2 and Ag-doped TiO2 against S. aureus. P. aeruginosa and E. coli

Cited by 19 publications

References 8 publications

Antibacterial Activity of Ag-Doped TiO2 and Ag-Doped ZnO Nanoparticles

Antibacterial Activity of Ag-Doped TiO2 and Ag-Doped ZnO Nanoparticles

Strongly Enhancing Photocatalytic Activity of TiO2 Thin Films by Multi-Heterojunction Technique

THE EFFECT OF STIRRING TECHNIQUES ON TiO2 NANOPARTICLE SIZE BY USINGA WET CHEMICAL METHOD

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Product

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Correction: Photocatalytic antibacterial performance of TiO₂ and Ag-doped TiO₂ against S. aureus. P. aeruginosa and E. coli

Antibacterial Activity of Ag-Doped TiO₂ and Ag-Doped ZnO Nanoparticles

Antibacterial Activity of Ag-Doped TiO₂ and Ag-Doped ZnO Nanoparticles