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@article{1571919,
author = {Levchuk, Irina and Homola, Tomáš and MorenoandAndrés, Javier and RuedaandMárquez, Juan José and Dzik, Petr and Moríñigo, Miguel Ángel and Sillanpää, Mika and Manzano, Manuel A. and Vahala, Riku},
article_location = {OXFORD},
article_number = {October 2019},
doi = {http://dx.doi.org/10.1016/j.solener.2019.09.038},
keywords = {Solar photocatalysis; Flexible thin films; Drinking water; Marine water},
language = {eng},
issn = {0038-092X},
journal = {Solar Energy},
title = {Solar photocatalytic disinfection using ink-jet printed composite TiO2/SiO2 thin films on flexible substrate: Applicability to drinking and marine water},
url = {https://www.sciencedirect.com/science/article/pii/S0038092X19309132?via%3Dihub},
volume = {191},
year = {2019}
}
TY - JOUR
ID - 1571919
AU - Levchuk, Irina - Homola, Tomáš - Moreno-Andrés, Javier - Rueda-Márquez, Juan José - Dzik, Petr - Moríñigo, Miguel Ángel - Sillanpää, Mika - Manzano, Manuel A. - Vahala, Riku
PY - 2019
TI - Solar photocatalytic disinfection using ink-jet printed composite TiO2/SiO2 thin films on flexible substrate: Applicability to drinking and marine water
JF - Solar Energy
VL - 191
IS - October 2019
SP - 518-529
EP - 518-529
PB - PERGAMON-ELSEVIER SCIENCE LTD
SN - 0038092X
KW - Solar photocatalysis
KW - Flexible thin films
KW - Drinking water
KW - Marine water
UR - https://www.sciencedirect.com/science/article/pii/S0038092X19309132?via%3Dihub
L2 - https://www.sciencedirect.com/science/article/pii/S0038092X19309132?via%3Dihub
N2 - Hybrid TiO2/SiO2 thin films deposited by material printing technique on flexible substrates were prepared, characterized and tested for solar photocatalytic disinfection. Effect of surface hydrophilicity/hydrophobicity of printed coatings on photocatalytic disinfection was studied by means of (i) drinking water contaminated with natural consortia of fecal bacteria (gram-negative: Escherichia coli and total coliforms; gram-positive: Enterococci), and (ii) seawater containing pathogenic gram-negative bacteria (Vibrio owensii, Vibrio alfacsensis and Vibrio harveyi). Inactivation of gram-negative bacteria in drinking water with fecal contamination by solar photocatalysis was slightly more efficient than solar disinfection, while for gram-positive bacteria similar efficiency was observed. These results, in combination with observed release of titanium from coatings (detected by means of inductively coupled plasma atomic emission spectrometer), indicate that TiO2/SiO2 needs further improvements for solar photocatalytic disinfection of drinking water. Efficiency of seawater disinfection towards gram-negative Vibrio spp. (Vibrio owensii, Vibrio alfacsensis and Vibrio harveyi) was significantly enhanced when TiO2/SiO2 coatings were used under natural solar light. Moreover, hydrophobic thin films led to faster Vibrio spp. inactivation as compared to hydrophilic ones, which was attributed to higher bacteria adhesion on hydrophobic coatings. However, decrease of photocatalytic activity of hydrophobic TiO2/SiO2 coatings was observed after ten experimental cycles mainly due to deposition of salts on the surface of photocatalyst. Generally, results of this study suggest that autochthonous bacteria such as Vibrio spp. in seawater are significantly more resistant to solar disinfection in comparison with not autochthonous bacteria such as Escherichia coli, total coliforms and Enterococci in contaminated drinking water.
ER -
LEVCHUK, Irina, Tomáš HOMOLA, Javier MORENO-ANDRÉS, Juan José RUEDA-MÁRQUEZ, Petr DZIK, Miguel Ángel MORÍÑIGO, Mika SILLANPÄÄ, Manuel A. MANZANO a Riku VAHALA. Solar photocatalytic disinfection using ink-jet printed composite TiO2/SiO2 thin films on flexible substrate: Applicability to drinking and marine water. \textit{Solar Energy}. OXFORD: PERGAMON-ELSEVIER SCIENCE LTD, 2019, roč.~191, October 2019, s.~518-529. ISSN~0038-092X. Dostupné z: https://dx.doi.org/10.1016/j.solener.2019.09.038.
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