Articles producció científica> Enginyeria Química

Enhanced Photocatalytic Kinetics Using HDTMA Coated TiO2-Smectite Composite for the Oxidation of Diclofenac under Solar Light

  • Identification data

    Identifier: imarina:9291515
    Handle: https://hdl.handle.net/20.500.11797/imarina9291515
    Authors:
    Fellah, IDjellabi, RBen Amor, HHamdi, NOrdonez, MFBianchi, CL
    Abstract:
    Slow kinetics is one of the capital issues of photocatalytic technology because of its heterogeneous nature, which involves multi-step processes. Herein, we show that the simple modification of the sol-gel-based TiO2-smectite composite by hexadecyltrimethylammonium bromide (HDTMA) significantly boosts adsorption and photocatalytic efficient sol-gel-based light towards the removal of diclofenac from water. Three photocatalysts were prepared, including TiO2, TiO2-smectite, and HDTMA-TiO2-smectite. The materials were characterized to understand the surface interaction and crystal characteristics. In terms of photoactivity, it was found that the addition of HDTMA to TiO2-smectite improved the removal rate by twice. HDTMA changes the functional groups to TiO2-smectite composite allowing enhanced adsorption and photoactivity through the so-called Adsorb and Shuttle process. The recycling tests show that HDTMA-TiO2-smectite can be used up to four times with good performance. This modification approach could intensify the removal of pollutants from water instead of using complicated and costly techniques.

  • Others:

    Author, as appears in the article.: Fellah, I; Djellabi, R; Ben Amor, H; Hamdi, N; Ordonez, MF; Bianchi, CL
    Department: Enginyeria Química
    URV's Author/s: Djellabi, Ridha
    Keywords: Water treatment Tio -smectite 2 Solar photocatalysis Shuttle Adsorb & Hdtma modification
    Abstract: Slow kinetics is one of the capital issues of photocatalytic technology because of its heterogeneous nature, which involves multi-step processes. Herein, we show that the simple modification of the sol-gel-based TiO2-smectite composite by hexadecyltrimethylammonium bromide (HDTMA) significantly boosts adsorption and photocatalytic efficient sol-gel-based light towards the removal of diclofenac from water. Three photocatalysts were prepared, including TiO2, TiO2-smectite, and HDTMA-TiO2-smectite. The materials were characterized to understand the surface interaction and crystal characteristics. In terms of photoactivity, it was found that the addition of HDTMA to TiO2-smectite improved the removal rate by twice. HDTMA changes the functional groups to TiO2-smectite composite allowing enhanced adsorption and photoactivity through the so-called Adsorb and Shuttle process. The recycling tests show that HDTMA-TiO2-smectite can be used up to four times with good performance. This modification approach could intensify the removal of pollutants from water instead of using complicated and costly techniques.
    Thematic Areas: Química Physical and theoretical chemistry Farmacia Environmental science (all) Engenharias ii Ciências biológicas ii Chemistry, physical Catalysis Astronomia / física
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    Author's mail: ridha.djellabi@urv.cat
    Author identifier: 0000-0002-1475-5565
    Record's date: 2024-08-03
    Papper version: info:eu-repo/semantics/publishedVersion
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Catalysts. 13 (1):
    APA: Fellah, I; Djellabi, R; Ben Amor, H; Hamdi, N; Ordonez, MF; Bianchi, CL (2023). Enhanced Photocatalytic Kinetics Using HDTMA Coated TiO2-Smectite Composite for the Oxidation of Diclofenac under Solar Light. Catalysts, 13(1), -. DOI: 10.3390/catal13010051
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2023
    Publication Type: Journal Publications

  • Keywords:

    Catalysis,Chemistry, Physical,Physical and Theoretical Chemistry
    Water treatment
    Tio -smectite 2
    Solar photocatalysis
    Shuttle
    Adsorb & Hdtma modification
    Química
    Physical and theoretical chemistry
    Farmacia
    Environmental science (all)
    Engenharias ii
    Ciências biológicas ii
    Chemistry, physical
    Catalysis
    Astronomia / física

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