info:eu-repo/semantics/article
Influence of Pyrolytic Seeds on ZnO Nanorod Growth Onto Rigid Substrates for Photocatalytic Abatement of Escherichia coli in water
Fecha
2014Registro en:
Sanchez, L., Guz, L., García Alvarez, P., Ponce, S., Goyanes, S., Marchi, M. C., ... y Rodríguez, J. (2014). Influence of pyrolytic seeds on ZnO nanorod growth onto rigid substrates for photocatalytic abatement of Escherichia coli in water. Water Science and Technology: Water Supply, 14(6), 1087-1094. doi:10.2166/ws.2014.068
1606-9749
Water Science and Technology: Water Supply
1607-0798
Autor
Sánchez, Luis
Guz, Lucas
García, Pilar
Ponce Álvarez, Silvia
Goyanes, Silvia
Marchi, María Claudia
Candal, Roberto
Estrada, Walter
Rodríguez Rodríguez, Juan
Institución
Resumen
ZnO nanorods (ZnO NRs) were grown on ZnO seeded fluorine doped tin oxide (FTO) substrates at low temperatures (90 °C) from Zn2+ precursors in alkaline aqueous solution. The ZnO seeds were deposited on the FTO substrate heated at 350 °C by spray pyrolysis of a zinc acetate solution in a water ethanol mixture. The structure of seeds was tuned by the ethanol water ratio, G, which controls the solvent evaporation rate of drops impinging the substrate. The relationship between the microstructure and optical properties of the ZnO NR films and the photocatalytic antibacterial activity for Escherichia coli abatement, was determined through a detailed characterization of the material. The higher photocatalytic antibacterial activity was performed by ZnO NR films grown on seeds deposited from solutions with G in the 0.0–0.03 range. With these films, the population of viable E. coli dropped more than six orders, from 8 × 108 to 4 × 102 CFU. These results show the potential of these materials in water disinfection.