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Self-sensitized photodegradation and adsorption of aqueous malachite green dye using one-dimensional titanium oxide nanofilaments.
Walter, Adam D; Benamor, Hiba; Ferrer, Lucas M; Reji, Treesa; Curran, Tracey; Schwenk, Gregory R; Hadji, Mohamed; Creighton, Megan A; Barsoum, Michel W.
Afiliación
  • Walter AD; Department of Materials Science and Engineering, Drexel University, Philadelphia, PA, USA.
  • Benamor H; Laboratoire d'Etudes et Recherche en Technologie Industrielle, Université of Saad Dahlab Blida 1, Blida, Algeria.
  • Ferrer LM; Department of Materials Science and Engineering, Drexel University, Philadelphia, PA, USA.
  • Reji T; Department of Materials Science and Engineering, Drexel University, Philadelphia, PA, USA.
  • Curran T; Academy of Natural Sciences of Drexel University, Philadelphia, PA, USA.
  • Schwenk GR; Department of Materials Science and Engineering, Drexel University, Philadelphia, PA, USA.
  • Hadji M; Laboratoire d'Etudes et Recherche en Technologie Industrielle, Université of Saad Dahlab Blida 1, Blida, Algeria.
  • Creighton MA; Department of Chemical and Biological Engineering, Drexel University, Philadelphia, PA, USA.
  • Barsoum MW; Department of Materials Science and Engineering, Drexel University, Philadelphia, PA, USA.
iScience ; 27(9): 110647, 2024 Sep 20.
Article en En | MEDLINE | ID: mdl-39262812
ABSTRACT
Truly one-dimensional titanium oxide nanofilaments with a lepidocrocite structure (1DLs) were explored in the adsorption and photocatalytic degradation of aqueous malachite green (MG), a toxic polluting dye. Decolorization is monitored by ultraviolet-visible spectroscopy, and mineralization is confirmed by total organic carbon analysis. The 1DL/MG flocs are characterized by scanning electron microscopy and X-ray diffraction. 1DLs, a colloidal nanomaterial, exhibit flocculating behavior while demonstrating high affinity for MG, with a maximum uptake of >680 mg/g rapidly via ion exchange. Additionally, 1DLs decolorize MG under visible light only, unlike most available titania products, via a self-sensitization effect. MG is decolorized by 1DLs by >70% in 30 min under 1 sun exposure of visible light. Counterintuitively, dye adsorption increases as the normalized concentration by mass of 1DL decreases. Demonstrating high adsorption capacity and dye mineralization supports the use of 1DLs in water treatment and self-sensitization for photoelectrochemical devices, like solar cells.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: IScience Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos
Texto completo
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Imprimir
XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: IScience Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos