Paper Functionalized with Nanostructured TiO2/AgBr: Photocatalytic Degradation of 2–Propanol under Solar Light Irradiation and Antibacterial Activity

Nanomaterials

Giuseppe Marcì¹  Michelangelo Gruttadauria²  Sami Boufi³  Soraa Bouattour⁴  Mouheb Sboui⁴  LeonardaFrancesca Liotta⁵ 

[1] Dipartimento di Ingegneria (DI), Università degli Studi di Palermo, Viale delle Scienze Ed. 6, 90128 Palermo, Italy;Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STEBICEF), Università degli Studi di Palermo, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy;Faculty of Sciences, University of Sfax, Laboratoire Sciences des Matériaux et Environnement, Sfax BP1171-3018, Tunisia;Faculty of Sciences, University of Sfax, Lions Club International (LCI), Sfax BP1171-3018, Tunisia;Istituto per lo Studio dei Materiali Nanostrutturati (ISMN-CNR), Via Ugo La Malfa 153, 90146 Palermo, Italy;

关键词: paper–tio₂–agbr;    2-propanol photodegradation;    antibacterial activity;    sunlight irradiation;   

DOI  :  10.3390/nano10030470

来源: DOAJ

【 摘 要 】

A facile method to produce paper−TiO₂ decorated with AgBr nanoparticles by a mild hydrothermal process at 140 °C was reported. The synthesis method was based on the immersion of the paper in a ready-made suspension of TiO₂/AgBr, comprising TiO₂ sol solution prepared in acidic conditions and AgBr solution (10⁻⁴ M). A paper−TiO₂ sample was prepared and used as reference. The formation of crystalline phases of titanium oxide (TiO₂) and silver bromide (AgBr) was demonstrated by XRD, Raman and EDX analyses. The surface morphology of the TiO₂−AgBr was investigated by Field Effect Scanning Electronic Microscopy (FE−SEM). The photocatalytic performances of the prepared material were evaluated in the degradation of 2-propanol in the gas phase, under simulated sunlight illumination. Its antibacterial properties against Escherichia coli (E. coli) were also assessed. The efficiency of photodegradation and the anti-bacterial properties of paper−TiO₂−AgBr were attributed to an improvement in the absorption of visible light, the increased production of reactive oxygen species (ROS) and the low recombination of photogenerated charge carriers due to the synergistic effect between TiO₂ and AgBr/Ag nanoparticles.

【 授权许可】

Unknown