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1

Water purification by photocatalysis on semiconductors

100%
Sobczynski A., Dobosz A.
Polish Journal of Environmental Studies
|
2001
|
tom 10
|
nr 4
This paper describes the basics of photocatalysis on semiconductors, mainly on TiO2 and the application of photocatalytic processes to water purification from organic matter. The second chapter is devoted to metal cocatalysts introduced in order to improve the photocatalytic action of titania. Finally, a short review of more interesting practical applications of the processes is presented.
2

Decomposition of detergents present in car-wash sewage by titania photo-assisted oxidation

88%
Perkowski J., Bzdon S., Bulska A., Jozwiak W. K.
Polish Journal of Environmental Studies
|
2006
|
tom 15
|
nr 3
Advanced oxidation process (AOP) has been shown to be effective in water and air decontamination. Ultraviolet-oxidation has been evaluated for most contaminants. In this work UV/TiO₂/O₂ version of AOP method was used to decompose surfactants and, applied in car washing installations, commercial products. The influence of such parameters like the amount of TiO₂ catalyst's dose, the acidity of aqueous solution and the type of applied UV lamp were examined. Additionally, in order to evaluate the effects associated with photocatalysis, studies of the contributions like adsorption of surfactants on catalysts and photooxidation were undertaken. photocatalytic oxidation of Cleentex aqueous solution was investigated, using TiO₂ and 10% - Tio₂/SiO₂ as catalysts The most efficient process appeared to occur in weakly basic solution pH = 8.9 with TiO₂ catalyst dose about 1.5 g dm⁻³. The photo-efficiency of UV lamps should be verified in order to avoid the excessive losses of light power. All detergents showed a high affinity for photocatalytic decomposition and final degree of COD reduction was in the range 35-60 %, depending on detergent composition. The degree of TOC reduction was slightly lower.
3
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Photocatalytic degradation of ampicillin using silver nanoparticles biosynthesised by Pleurotus ostreatus

75%
Jassal P. S., Khajuria R., Sharma R., Debnath P., Verma S., Johnson A., Kumar S.
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
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2020
|
tom 101
|
nr 1
4

The influence of Mo, Co, and V on the properties of the photocatalysts type Tio2/Al2O3

63%
Nazimek D., Piekarski W., Marczuk A.
Teka Komisji Ochrony i Kształtowania Środowiska Przyrodniczego
|
2014
|
tom 11
5

Bactericidal effects and mechanisms of visible light-responsive titanium dioxide photocatalysts on pathogenic bacteria

63%
Liou J.-W., Chang H.-H.
Archivum Immunologiae et Therapiae Experimentalis
|
2012
|
tom 60
|
nr 4
6
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Survival of Staphylococcus aureus exposed to UV radiation on the surface of ceramic tiles coated with TiO₂

51%
Szczawinski J., Tomaszewski H., Jackowska-Tracz A., Szczawinska M.
Polish Journal of Veterinary Sciences
|
2011
|
tom 14
|
nr 1
The aim of this study was to determine and compare the antimicrobial activity of UV radiation of wavelength 253.7 nm (used in typical germicidal lamps) against Staphylococcus aureus on the surfaces of conventionally produced white ceramic wall tiles (matt and shiny) and the same tiles coated with TiO₂ using three different methods: RF diode sputtering, atmospheric pressure chemical vapour deposition (APCVD) and spray pyrolysis deposition (SPD). Results clearly indicate that the bactericidal action of UV radiation is much stronger on the surfaces of tiles coated with TiO₂ than on the tiles uncovered. The strongest bactericidal effect of UV radiation was found for film prepared by APCVD. Results of experiments for shiny and matt tiles did not differ statistically. The use of ceramic wall tiles coated with TiO₂ films in hospitals, veterinary clinics, laboratories, food processing plants and other places where UV radiation is applied for disinfection should greatly improve the efficiency of this treatment.
7

Effect of UV radiation on survival of Salmonella enteritidis on the surface of ceramic tiles coated with TiO2

51%
Szczawinski J., Tomaszewski H., Jackowska-Tracz A., Szczawinska M. E.
Bulletin of the Veterinary Institute in Puławy
|
2010
|
tom 54
|
nr 4
The aim of this study was to determine and compare the antimicrobial activity of UV radiation of wavelength 253.7 nm (used in typical germicidal lamps) against Salmonella Enteritidis on the surfaces of conventionally produced white ceramic wall tiles (matt and shiny) and the same tiles coated with TiO₂, using three different methods: rf diode sputtering, atmospheric pressure chemical vapour deposition (APCVD), and spray pyrolysis deposition (SPD). Results clearly indicate that the bactericidal action of UV radiation is much stronger on the surfaces of tiles coated with TiO₂ than on the tiles uncovered. The strongest bactericidal effects of UV radiation was found for film prepared by APCVD, weaker for sputtering, and the weakest for SPD. Results of experiments for shiny and matt tiles did not differ statistically.
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