Solar photocatalytic disinfection of a group of bacteria and fungi aqueous suspensions with TiO2, ZnO and Sahara desert dust

Seven, Özlem; Dindar, Bircan; Aydemir, Sabire; Metin, Dilek Yeşim; Özinel, Mehmet Ali; İçli, Sıddık

doi:10.1016/j.jphotochem.2004.03.005

Cited by 205 publications

(120 citation statements)

References 17 publications

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“…This interaction causes damage of fungal cells. Silver nanopar- [20]. The results showed that gold nanoparticles have a good anticandidial effects and can be used to treat infections of Candida, it is recommended that further research considered the effects of different infections candidiasis in In vivo condition.…”

Section: Discussionmentioning

confidence: 99%

“…It's used in paint manufacturing and covering texture industries, but its tiny nanoparticles for having extraordinary and unique features (such as electronica, light and photo cabalistic features) have found many applications. This substance is used in refining, disinfections and decolorization, making specific ceramic, demolishing cancer cells, making photo catalyst, paper manufacturing, health care and cosmetics production, providing the protecting cover against ultraviolet and brightening [19,20]. There can exist about 300 -400 different species of micro-organism including 20 species of Candida in oral cavity as normal flora [21].…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Gold Nano Particles Compared to Dioxide Titanium Nano Particles on Vital Factors of Isolated Candida albicans in Patients with Oral Candidiasis in Vitro

Torabi

Doudi

2016

Zahedan J Res Med Sci

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Effect of Gold Nano Particles Compared to Dioxide Titanium Nano Particles on Vital Factors of Isolated Candida albicans in Patients with Oral Candidiasis in Vitro

Torabi

Doudi

2016

Zahedan J Res Med Sci

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“…Nanostructured ZnO has interesting properties towards the photocatalytic decomposition of organic pollutants [24] and dyes [25], while La-doped and silane-coated ZnO nanoparticles have recently shown remarkable photocatalytic action against monocrotophos [26] and tetrachloroethylene [27], respectively. Several studies have compared the effectiveness of the photocatalytic properties of ZnO for the inactivation of several pathogens with that of various metallic oxides and demonstrated that ZnO is highly effective in this context [23,28,29]. These works suggest the use of zinc oxide coatings for the inactivation of biofilms, a subject which has remained hitherto unexplored.…”

Section: Homentioning

confidence: 99%

ZnO films grown by pulsed-laser deposition on soda lime glass substrates for the ultraviolet inactivation of Staphylococcus epidermidis biofilms

Mosnier

O’Haire

McGlynn

et al. 2009

Science and Technology of Advanced Materials

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We found that a ZnO film of 2 µm thickness which was laser-deposited at room temperature onto a plain soda lime glass substrate, exhibits notable antibacterial activity against a biofilm of Staphylococcus epidermidis when back-illuminated by a UVA light source with a peak emission wavelength of about 365 nm. X-ray diffraction (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM), UV-visible absorption spectroscopy, Raman spectroscopy and x-ray photoemission spectroscopy (XPS) were used to characterize the ZnO films before and after the interactions with the biofilm and the ultraviolet light, respectively. The as-deposited film was highly textured with the wurtzite (0002) in-plane orientation (c-axis perpendicular to ZnO surface) and had a surface rms roughness of 49.7 nm. In the as-deposited film, the Zn to O ratio was 1 to 0.95. After the UV and biofilm treatments, the ZnO film surface had become rougher (rms roughness 68.1 nm) and presented uniform micron-sized pitting randomly distributed, while the zinc to oxygen ratio had become 1 to 2.2. In this case, both the UV-visible and Raman spectra pointed to degradation of the structural quality of the material. On the strength of these data, we propose a model for the mediation of the bactericidal activity in which the photogeneration of highly oxidizing species and the presence of active surface defect sites both play an important role. This study is of particular interest for the acute problem of disinfection of pathogenic biofilms which form on medical device/implant surfaces.

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“…Silver has been used in many applications in pure free metal or in compound form because it possesses antimicrobial activity against pathogens, yet it is nontoxic to humans (Yeo et al, 2003;Elchiguerra et al, 2005). Zinc nanoparticles have antimicrobial activity and can be used as fungicide (Seven et al, 2004;Levin et al, 2007). The authors of these studies have reported that the oxide nanoparticles such as ZnO and Ag have a toxic effect on bacteria, fungi, and biological cells; furthermore, various toxicity mechanisms of Ag have been reported.…”

mentioning

confidence: 99%

Insecticied effect of silver and zinc nanoparticles against Aphis nerii Boyer of fonscolombe (Hemiptera: Aphididae)

Rouhani

Samih

Kalantari

2012

Chilean J. Agric. Res.

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The oleander aphid, Aphis nerii Boyer de Fonscolombe, is one of the common pests of ornamental plants in the families of Apocynaceae and Sclepiadaceae and distributed throughout the world, which has been responsible for the mortality of a large number of oleander (Nerium oleander L.) shrubs each year. In this research, the insecticidal activity of Ag nanoparticles against the A. nerii was investigated. Nanoparticles of Ag and Ag-Zn were synthesized through a solvothermal method, and using them, insecticidal solutions of different concentrations were prepared and tested on A. nerii. For comparison purposes, imidacloprid was also used as a conventional insecticide. In the experiments, the LC50 value for imidacloprid, Ag and Ag-Zn nanoparticles were calculated to be 0.13 µL mL -1 , 424.67 mg mL -1, and 539.46 mg mL -1, respectively. The result showed that Ag nanoparticles can be used as a valuable tool in pest management programs of A. nerii. Additionally, the study showed that imidacloprid at 1 µL mL -1 and nanoparticles at 700 mg mL -1 had the highest insect mortality effect.

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Solar photocatalytic disinfection of a group of bacteria and fungi aqueous suspensions with TiO2, ZnO and Sahara desert dust

Cited by 205 publications

References 17 publications

The Effect of Gold Nano Particles Compared to Dioxide Titanium Nano Particles on Vital Factors of Isolated Candida albicans in Patients with Oral Candidiasis in Vitro

The Effect of Gold Nano Particles Compared to Dioxide Titanium Nano Particles on Vital Factors of Isolated Candida albicans in Patients with Oral Candidiasis in Vitro

ZnO films grown by pulsed-laser deposition on soda lime glass substrates for the ultraviolet inactivation of Staphylococcus epidermidis biofilms

Insecticied effect of silver and zinc nanoparticles against Aphis nerii Boyer of fonscolombe (Hemiptera: Aphididae)

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