Journal ArticleDOI
Photocatalytic inactivation of Escherichia coli and Lactobacillus helveticus by ZnO and TiO2 activated with ultraviolet light
TLDR
The use of air as the purging gas, providing a stronger oxidising environment to both strains, gives a higher catalytic effect on bacteria inactivation than that of nitrogen.About:
This article is published in Process Biochemistry.The article was published on 2003-12-29. It has received 200 citations till now. The article focuses on the topics: Lactobacillus helveticus & Ultraviolet light.read more
Citations
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Journal ArticleDOI
Photoinduced reactivity of titanium dioxide
TL;DR: In this paper, photo-induced superhydrophilicity was used on the surface of a wide-band gap semiconductor like titanium dioxide (TiO 2 ) for photocatalytic activity towards environmentally hazardous compounds.
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Antimicrobial nanomaterials for water disinfection and microbial control: Potential applications and implications
Qilin Li,Shaily Mahendra,Delina Y. Lyon,Lena Brunet,Michael V. Liga,Dong Li,Pedro J. J. Alvarez +6 more
TL;DR: The antimicrobial mechanisms of several nanoparticles are reviewed, their merits, limitations and applicability for water disinfection and biofouling control are discussed, and research needs to utilize novel nanomaterials for water treatment applications are highlighted.
Journal ArticleDOI
Size-Dependent Bacterial Growth Inhibition and Mechanism of Antibacterial Activity of Zinc Oxide Nanoparticles
TL;DR: The experimental results suggest that ZnO nanoparticles could be developed as antibacterial agents against a wide range of microorganisms to control and prevent the spreading and persistence of bacterial infections.
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Photocatalytic disinfection using titanium dioxide: spectrum and mechanism of antimicrobial activity
TL;DR: The activity has been shown to be capable of killing a wide range of Gram-negative and Gram-positive bacteria, filamentous and unicellular fungi, algae, protozoa, mammalian viruses and bacteriophage, and the killing activity is enhanced by the presence of other antimicrobial agents such as Cu and Ag.
Journal ArticleDOI
Nanotechnology and Water Treatment: Applications and Emerging Opportunities
TL;DR: In this paper, the potential of novel nanomaterials for treatment of surface water, groundwater, and wastewater contaminated by toxic metal ions, organic and inorganic solutes, and microorganisms is discussed.
References
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Journal ArticleDOI
Spin trapping and electron spin resonance detection of radical intermediates in the photodecomposition of water at titanium dioxide particulate systems
Calvin D. Jaeger,Allen J. Bard +1 more
TL;DR: In this article, a spin trap was used to detect free-radical intermediates formed during in situ irradiation of TiO/sub 2/ and platinized polysilicon powders in aqueous solution.
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Semiconductor-assisted photocatalytic degradation of reactive dyes in aqueous solution.
Carlos A. K. Gouvea,Fernando Wypych,Sandra Gomes de Moraes,Nelson Durán,Noemi Nagata,Patricio Peralta-Zamora +5 more
TL;DR: A systematic optimization study carried out by factorial design showed that for the reactive dyes tested, the ZnO semiconductor exhibits a better efficiency than that observed with anatase TiO2.
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Mode of photocatalytic bactericidal action of powdered semiconductor TiO2 on mutans streptococci.
TL;DR: From these results, bacterial death appears to be caused by a significant disorder in cell membranes and finally the cell walls were decomposed.
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Inactivation of Escherichia coli by titanium dioxide photocatalytic oxidation.
TL;DR: Titanium dioxide in the anatase crystalline form was used as a photocatalyst to generate hydroxyl radicals in a flowthrough water reactor, and rapid cell death was observed in water devoid of significant amounts of inorganic-radical scavengers.
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Oxidative damage to nucleic acids photosensitized by titanium dioxide
TL;DR: The results suggest that nucleic acids are a potential target for photooxidative damage sensitized by TiO2, and support the view thatTiO2 photocatalyzes free radical formation.