Inactivation of MS2 coliphage in sewage by solar photocatalysis using metal-doped TiO2

Venieri, Danae; Gounaki, Iosifina; Binas, Vassiliοs; Zachopoulos, Apostolos; Kiriakidis, G.; Mantzavinos, Dionissios

doi:10.1016/j.apcatb.2014.10.052

Cited by 64 publications

(28 citation statements)

References 39 publications

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“…In this respect, doping TiO 2 with cocatalysts could serve as one solution. Manganese and cobalt doped TNS achieved MS2 coliphage inactivation with a population reduction of up to 99.9 % . To pursue elevated disinfection performances, Ma et al.…”

Section: D Antimicrobial Nanomaterialsmentioning

confidence: 99%

“…[82] In this respect, doping TiO 2 with cocatalysts could serve as one solution.M anganese and cobalt doped TNS achieved MS2 coliphage inactivation with ap opulation reduction of up to 99.9 %. [83] To pursue elevated disinfection performances, Ma et al synthesized ultrathin Fe 3 O 4 -TNS through as olvothermal method. The excellent conductor Fe 3 O 4 can trap photogenerated e À and inhibitt he recombination of e À /h + pairs.…”

Section: Metal-based Antibacterial Nanomaterialsmentioning

confidence: 99%

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Recent Progress in Two‐Dimensional Antimicrobial Nanomaterials

Miao

Teng

Wang

et al. 2018

Chemistry A European J

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Nowadays, microorganisms, including bacteria and viruses, are regarded as new environmental pollutants and pose serious threats to public health. Yet, traditional disinfection approaches for bacteria and viruses are generally ineffective. Furthermore, they exhibit the disadvantages of high-energy consumption, environmental pollution, high cost, and toxic byproduct generation. In this respect, nanomaterials display promising antimicrobial capabilities due to their unique properties and provide solutions to the abovementioned issues. Herein, recent progress in the development of 2D nanomaterials displaying antimicrobial capabilities is highlighted. The structures, morphologies, and performances of essential metal, graphene, and nitride-based 2D antibacterial nanomaterials are summarized in detail. In addition, possible antimicrobial mechanisms and the relationship between structure and antimicrobial efficiency are elaborated.

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Section: D Antimicrobial Nanomaterialsmentioning

confidence: 99%

Section: Metal-based Antibacterial Nanomaterialsmentioning

confidence: 99%

Recent Progress in Two‐Dimensional Antimicrobial Nanomaterials

Miao

Teng

Wang

et al. 2018

Chemistry A European J

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“…Many studies on AOPs are based on the generation of highly oxidizing species, such as hydroxyl radicals, generated in the photocatalysis process using some metal oxide semiconductors, such as ZnO, ZnS, CdS and TiO 2 [10,11]. Since titanium dioxide (TiO 2 ) was discovered by Fujishima and Honda in 1972 [12], this compound has been considered by many researchers due to its widespread and significant advantages [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and photocatalytic activity of V-doped mesoporous TiO2 photosensitized with porphyrin supported by SBA-15

et al. 2015

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A highly efficient photocatalyst was produced by immobilizing V-doped mesoporous TiO 2 /tetrakis(4-carboxyphenyl)porphyrin (V-TiO 2 /TCPP) onto SBA-15 walls, and was then investigated for photodecomposition of 2,4-dichlorophenol (2,4-DCP) in aqueous solutions. In the present paper, first, in order to activate titanium dioxide by visible light, the TiO 2 mesoporous was doped by vanadium (V-TiO 2 ) and then it was sensitized by tetrakis(4-carboxyphenyl)porphyrin (TCPP). To improve the photocatalytic activity of the prepared catalyst, SBA-15 was functionalized with the prepared V-TiO 2 /TCPP by pre-anchorage of 3-(aminopropyl)-triethoxysilane via post-synthesis method (V-TiO 2 /TCPP/SBA). The obtained materials were characterized by UV-Vis absorption, FT-IR spectroscopy, diffuse reflectance (DRS), scanning electron microscopy, X-Ray diffraction, and N 2 adsorption-desorption. Furthermore, a comparative study on the photodegradation of 2,4-DCP between V-TiO 2 /TCPP/SBA and V-TiO 2 /TCPP composites was performed and the role of SBA-15 was investigated. The results showed that the decomposition efficiency of the 2,4-DCP by using the V-TiO 2 /TCPP/SBA was much more than that of applying TCPP/V-TiO 2 in high initial concentration of pollutant (up to 99 % in 300 mg/L). In addition, the photocatalytic degradations of 2,4-DCP using above photocatalysts all followed a first-order kinetic model. The V-TiO 2 /TCPP/SBA was recycled four times without significant loss of photocatalytic activity.

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“…Bacteriophage MS2 was used as a model virus because of its simplicity to propagate and enumerate, similarity to many waterborne pathogenic viruses, and more resistance to UV disinfection than other bacteriophages [13]. Bacteriophage MS2 has also been frequently reported as a model virus for viral inactivation studies in the literature [13,19,20]. Unlike the traditional methods of using particulate and colloidal TiO 2 suspensions, which shield the UV light transmission and have difficulties for separation and reuse of the photocatalysts, the TiO 2 membrane is a relatively new form of the catalyst.…”

Section: H I G H L I G H T Smentioning

confidence: 99%