Study of the E. coli elimination from urban wastewater over photocatalysts based on metallized TiO2

Murcia, Julie J.; Martínez, Elsa Giovanna Ávila; Rojas, Hugo; Navı́o, J.A.; Hidalgo, M.C.

doi:10.1016/j.apcatb.2016.07.045

Cited by 53 publications

(27 citation statements)

References 24 publications

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“…In Figures 9(a)-9(d), the E. coli cells were mostly either irreversibly deformed or collapsed, with fissures and pits visible on the cell membrane, indicating the loss of integrity and viability of the E. coli cells, consistent with [37][38][39][40]. In fact, the bacterial inhibition performance of the SG-TiO 2 thin film, given the UVA exposure, resembles that of the SPTiO 2 thin film.…”

Section: Photocatalytic Bacterialmentioning

confidence: 52%

E. coli Bacteriostatic Action Using TiO₂ Photocatalytic Reactions

Rojviroon

Sirivithayapakorn

2018

International Journal of Photoenergy

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This experimental research comparatively investigates the Escherichia coli (E. coli) bacterial inactivation of the TiO 2 photocatalytic thin films fabricated by the sol-gel dip-coating (SG) and low-temperature spray-coating (SP) techniques, with low-intensity (12 μW·cm . Moreover, the essential physical characteristics of the SG-TiO 2 and SP-TiO 2 photocatalytic thin films were determined prior to the experimental bacterial inactivation. The findings showed that both photocatalytic thin films possessed the ideal physical characteristics, especially the SP-TiO 2 thin film. In addition, the viable cell counts, the cell morphology, and the bioluminescence-based adenosine triphosphate (ATP) indicated that both SG-TiO 2 and SP-TiO 2 thin films under UVA could effectively inhibit the proliferation of the E. coli cells in both NB and 0.85% NaCl.

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Section: Photocatalytic Bacterialmentioning

confidence: 52%

E. coli Bacteriostatic Action Using TiO₂ Photocatalytic Reactions

Rojviroon

Sirivithayapakorn

2018

International Journal of Photoenergy

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“…Semiconductor photocatalysis has been shown in recent years to be effective in water purification . Photo‐oxidation of organic contamination, photo‐oxidation or reduction of toxic metal ions to less toxic oxidation states and the production of radicals that are highly effective in destroying bacteria have all been demonstrated by using a variety of different semiconductors over recent years . To date, the most studied semiconductor for this purpose is titanium dioxide (TiO 2 ), which has gained much success owing to its low cost, low toxicity and high stability.…”

Section: Introductionmentioning

confidence: 99%

Improving Carbon‐Coated TiO₂ Films with a TiCl₄ Treatment for Photocatalytic Water Purification

et al. 2017

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By using a simple thermal decomposition route, carbon‐TiO2 hybrid films have been synthesized from a catechol‐TiO2 surface complex. The coated films display enhanced visible region absorption, owing to the thin (≈2 nm) layer of carbon encapsulating the TiO2. Although photocatalytically active under visible light alone, it is demonstrated that the activity of the carbon‐coated films can be improved further by a hydrolytic treatment with TiCl4, leading to the introduction of small TiO2 particles (5–10 nm) and doping of chlorine into the structure. The combination of the carbon layer and TiCl4 treatment gives increased photocatalytic performance for the photodegradation of dyes, phenolic pollutants and the reduction of toxic CrVI to relatively benign CrIII. In addition, the carbon‐coated films show improved bactericidal activity under UV irradiation, and hence have been successfully tested against the most common types of pollutant present in potential drinking waters.

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“…For instance, this approach has been applied to grow Ag or Au nanoparticles onto TiO 2 NRs [85,86] or on TiO 2 supported on glass fibres [87], thus generating heterostructures. Photodeposition of Au on sulphated TiO 2 (S-TiO 2 ) has been realised by illuminating gold salt under an inert atmosphere (N 2 ) with a lamp having a sun-like radiation spectrum and a main emission line in the UVA range at 365 nm, in a suspension of S-TiO 2 in distilled water containing isopropanol, which acts as a sacrificial donor [88]. Coating plasmonic metal nanoparticles with TiO 2 is another promising method [90].…”

Section: Photochemical Reduction Of Metals At the Tio 2 Surfacementioning

confidence: 99%

Visible-Light-Active TiO2-Based Hybrid Nanocatalysts for Environmental Applications

et al. 2017

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Photocatalytic nanomaterials such as TiO 2 are receiving a great deal of attention owing to their potential applications in environmental remediation. Nonetheless, the low efficiency of this class of materials in the visible range has, so far, hampered their large-scale application. The increasing demand for highly efficient, visible-light-active photocatalysts can be addressed by hybrid nanostructured materials in which two or more units, each characterised by peculiar physical properties, surface chemistry and morphology, are combined together into a single nano-object with unprecedented chemical-physical properties. The present review intends to focus on hybrid nanomaterials, based on TiO 2 nanoparticles able to perform visible-light-driven photocatalytic processes for environmental applications. We give a brief overview of the synthetic approaches recently proposed in the literature to synthesise hybrid nanocrystals and discuss the potential applications of such nanostructures in water remediation, abatement of atmospheric pollutants (including NO x and volatile organic compounds (VOCs)) and their use in self-cleaning surfaces.

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Study of the E. coli elimination from urban wastewater over photocatalysts based on metallized TiO2

Cited by 53 publications

References 24 publications

E. coli Bacteriostatic Action Using TiO₂ Photocatalytic Reactions

E. coli Bacteriostatic Action Using TiO₂ Photocatalytic Reactions

Improving Carbon‐Coated TiO₂ Films with a TiCl₄ Treatment for Photocatalytic Water Purification

Visible-Light-Active TiO2-Based Hybrid Nanocatalysts for Environmental Applications

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Study of the E. coli elimination from urban wastewater over photocatalysts based on metallized TiO2

Cited by 53 publications

References 24 publications

E. coli Bacteriostatic Action Using TiO2 Photocatalytic Reactions

E. coli Bacteriostatic Action Using TiO2 Photocatalytic Reactions

Improving Carbon‐Coated TiO2 Films with a TiCl4 Treatment for Photocatalytic Water Purification

Visible-Light-Active TiO2-Based Hybrid Nanocatalysts for Environmental Applications

Contact Info

Product

Resources

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E. coli Bacteriostatic Action Using TiO₂ Photocatalytic Reactions

E. coli Bacteriostatic Action Using TiO₂ Photocatalytic Reactions

Improving Carbon‐Coated TiO₂ Films with a TiCl₄ Treatment for Photocatalytic Water Purification