title: Controlled growth of Cu2O nanoparticles bound to cotton fibres.
abstract: A green, safe and fast procedure is presented for in situ generation of nanoparticles (NPs) of cuprous oxide (Cu2O) onto cotton fibres at room temperature using water as a solvent. The method is based on a mild surface oxidation of cellulose fibres to generate in a controlled way carboxylic groups acting as a binding site for the adsorption of Cu(2+) via electrostatic coordination. Then, the adsorbed Cu(2+) ions were readly converted into Cu2O by dipping the treated cotton fibres into a aqueous solution of a reducing agent. Field-emission scanning electron microscopy (FE-SEM), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD), as well as UV-vis absorption and emission spectroscopic methods were used to analyse the size, morphology, chemical composition and the crystalline structure of the generated nanoparticles on the fabrics. The morphology of the ensuing Cu2O nanoparticles was shown to be dependent on the reduycing agent used. Antibacterial properties of the modified fibres were also investigated.
authors.affiliation: University of Sfax, Faculty of Science, LMES, BP1171-3018 Sfax, Tunisia.
authors.forename: A
authors.initials: A
authors.lastname: Errokh
authors.affiliation: Centro de Química-Física Molecular and Institute of Nanoscience and Nanotechnology, IST, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal.
authors.forename: A M
authors.initials: AM
authors.lastname: Ferraria
authors.affiliation: Centro de Química-Física Molecular and Institute of Nanoscience and Nanotechnology, IST, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal.
authors.forename: D S
authors.initials: DS
authors.lastname: Conceição
authors.affiliation: Centro de Química-Física Molecular and Institute of Nanoscience and Nanotechnology, IST, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal.
authors.forename: L F
authors.initials: LF
authors.lastname: Vieira Ferreira
authors.affiliation: Centro de Química-Física Molecular and Institute of Nanoscience and Nanotechnology, IST, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal.
authors.forename: A M
authors.initials: AM
authors.lastname: Botelho do Rego
authors.affiliation: ITODYS, UMR7086 CNRS, Université Paris Diderot, Sorbonne Paris Cité, Rue Jean Antoine de Baïf, 75205 Paris Cedex 13, France.
authors.forename: M
authors.initials: M
authors.lastname: Rei Vilar
authors.affiliation: University of Sfax, Faculty of Science, LMES, BP1171-3018 Sfax, Tunisia. Electronic address: sami.boufi@fss.rnu.tn.
authors.forename: S
authors.initials: S
authors.lastname: Boufi
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry*; D002482:Cellulose / Q000031:analogs & derivatives; D003300:Copper / Q000737:chemistry*; D032561:Cotton Fiber; D055772:Green Chemistry Technology / Q000379:methods; D053768:Metal Nanoparticles / Q000737:chemistry*; D010084:Oxidation-Reduction
chemical_list: D000900:Anti-Bacterial Agents; D003300:Copper; D002482:Cellulose; C000520:cuprous oxide
keywords: Antibacterial properties; Cellulose; Cotton; Cu(2)O; Nanoparticles