A solvothermal method was used to synthesize the mesoporous TiO, (1-3w %) Cu-doped mesoporous TiO membrane with the help of a bioreactor. To understand the physicochemical composition of all synthesized nanomaterials, the structure, morphology and crystallinity of the materials were studied using X-ray diffractometer (XRD), Field emission scanning electron microscopy (FESEM), Fourier transform-infrared (FTIR), Energy dispersive X-ray spectroscopy (EDS) and cyclic voltammetry (CV). Under artificial light source (500 W mercury bulb) irradiations, the nano catalysts' catalytic effectiveness was examined for the azo dyes, namely Congo red. Cu-doping causes a shift in the light absorption of mTiO from the ultraviolet to the visible region. The 3w% Cu-doped mTiO photocatalyst exhibits lower band gap energy (2.6eV) than TiO which is 3.2 eV to efficiently utilize solar energy. As a result, the light absorption was shifted towards the visible spectrum. The recommended mTiO and (1, 2, 3) w% Cu-doped mTiO photocatalysts were used to photodegrade Congo red and methylene blue. For the degradation of CR, the mTiO photocatalyst exhibited 61% and 3w% Cu-doped mTiO demonstrated 99% photocatalytic performance after 50 min. A variety of scavengers were also utilized to distinguish the active species by catching the radicals and holes created during the process of photocatalytic degradation. CV indicates the presence of Cu and Cu in Cu-doped mTiO. Oxygen vacancies and the electronegative surface of Cu seem to perform the photocatalytic reduction of CR.
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http://dx.doi.org/10.1016/j.chemosphere.2023.139583 | DOI Listing |
Chemosphere
October 2023
Institute de Biology en Sante, University of Angers, 4 Rue Larrey, Angers, 49100, France.
A solvothermal method was used to synthesize the mesoporous TiO, (1-3w %) Cu-doped mesoporous TiO membrane with the help of a bioreactor. To understand the physicochemical composition of all synthesized nanomaterials, the structure, morphology and crystallinity of the materials were studied using X-ray diffractometer (XRD), Field emission scanning electron microscopy (FESEM), Fourier transform-infrared (FTIR), Energy dispersive X-ray spectroscopy (EDS) and cyclic voltammetry (CV). Under artificial light source (500 W mercury bulb) irradiations, the nano catalysts' catalytic effectiveness was examined for the azo dyes, namely Congo red.
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