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    Effect of y-irradiation on the growth of ZnO nanorod films for photocatalytic disinfection of contaminated water

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    Date
    2011
    Author
    Alarcón, Julio
    Ponce-Álvarez, Silvia
    Paraguay-Delgado, Francisco
    Rodríguez-Rodríguez, Juan
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    Abstract
    The growth of ZnO nanorods on a flat substrate containing c-irradiated seeds and their ability to photocatalytically eliminate bacteria in water were studied. The seed layer was obtained, by the spray pyrolysis technique, from zinc acetate solutions c-irradiated within the range from 0 to 100 kGy. Subsequently, to grow the rods, the seeds were immersed in a basic solution of zinc nitrate maintained at 90 C. The rate of crystal growth on the seed layer during the thermal bath treatment was kept constant. The resulting materials were characterized morphologically by scanning electron and atomic force microscopies; X-ray diffraction was used to study their morphology and structure and ultraviolet–visible spectroscopy to determine their absorbance. The obtained seed films were morphologically dependent on the radiation dose and this was correlated with the ZnO nanorod films which presented a texture in the (002) direction perpendicular to the substrate. The rods have a hexagonal mean cross section between 20 and 140 nm. Using these rods, the photocatalytic degradation of Escherichia coli bacteria in water was studied; a positive influence of the crystalline texture on the degradation rate was observed.
    URI
    http://repositorio.ulima.edu.pe/handle/ulima/2256
    xmlui.dri2xhtml.METS-1.0.item-citation
    Alarcón, J., Ponce Álvarez, S., Paraguay Delgado, F., y Rodríguez Rodríguez, J. (2011). Effect of y-irradiation on the growth of ZnO nanorod films for photocatalytic disinfection of contaminated water. Journal of Colloid and Interface Science, (364), 49-55. doi:10.1016/j.jcis.2011.08.025
    Publisher
    Academic Press
    xmlui.dri2xhtml.METS-1.0.item-classification
    Ingenierías / Ingeniería química
    Subject
    Agua-Contaminación
    Nanotecnología
    Water-Pollution
    Nanotechnology
    xmlui.dri2xhtml.METS-1.0.item-descriptionuri
    Indexado en Scopus
    Acceso restringido a la comunidad Ulima (Para acceder al texto completo si es Docente Ulima, anteponer ULIMA/ a su usuario)
    xmlui.dri2xhtml.METS-1.0.item-relation
    http://downloads.ulima.edu.pe/rree_alumnos/Articulos/AR000246.pdf
    xmlui.dri2xhtml.METS-1.0.item-journal
    Journal of Colloid and Interface Science
    xmlui.dri2xhtml.METS-1.0.item-issn
    0021-9797
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    • Ingeniería Industrial [32]
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