RT journal article
T1 UVA and solar driven photocatalysis with rGO/TiO2/polysiloxane for inactivation of pathogens in recirculation aquaculture systems (RAS) streams
T2 UVA and solar driven photocatalysis with rGO/TiO2/polysiloxane for inactivation of pathogens in recirculation aquaculture systems (RAS) streams
A1 Levchuk, Irina
A1 Homola, Tomas
A1 Singhal, Gaurav
A1 Rueda-Márquez, Juan José
A1 Vida, Július
A1 Souček, Pavel
A1 Svoboda, Tomáš
A1 Villar Navarro, Elena
A1 Levchuk, Olga
A1 Dzik, Petr
A1 Lähde, Anna
A1 Moreno Andrés, Javier
A2 Tecnologías del Medio Ambiente
K1 Photocatalysis
K1 Flexible thin films
K1 Aquaculture water
K1 Bacteria inactivation
AB In this study TiO2/polysiloxane(SiBi) thin films modified with different concentrations of graphene oxide (GO) were prepared by ink-jet printing on flexible polyethylene terephthalate (PET) substrates. Prepared coatings were characterized by means of scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), ultraviolet photoelectron spectroscopy (UPS), Raman and water contact angle measurements. During photocatalytic tests strong change of color of prepared coatings modified with GO was observed. XPS analysis of thin films after photocatalytic tests suggests that reduction of GO took place. Prepared coatings were studied for inactivation of microorganisms naturally occurring in aquaculture water under UVA and natural solar irradiation. Effect of rGO concentration in prepared coating on inactivation of target bacteria Aeromonas hydrophila and Citrobacter gillenii was evaluated under UVA irradiation. Aeromonas hydrophila was more sensitive to photocatalytic inactivation in comparison with Citrobacter gillenii. Higher photocatalytic inactivation of target microorganisms was attributed to thin films with concentration of rGO 1 and 5%. The rGO/TiO2/SiBi 5% were further tested for inactivation of Aeromonas salmocida, Serratia fonticola strain and Lactococcus lactis strain under natural solar light. Solar photocatalysis slightly enhanced inactivation of Aeromonas salmocida and Serratia fonticola strain, while opposite was observed for Lactococcus lactis strain
PB ELSEVIER
SN 2666-8211
YR 2022
FD 2022-05
LK http://hdl.handle.net/10498/27228
UL http://hdl.handle.net/10498/27228
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 12-nov-2026