A highly efficient supported TiO2 photocatalyst for wastewater remediation in continuous flow

Cabezuelo, Oscar; Ponce-Gonzalez, Luis N.; Marin, M. Luisa; Bosca, Francisco

doi:10.1016/j.apmt.2023.101947

Cited by 1 publication

(1 citation statement)

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“…Nanoporous TiO 2 spheres have emerged recently as a new class of TiO 2 nanomaterials for photochemical applications. Compared with conventional TiO 2 nanoparticles, nanoporous TiO 2 presents significant advantages in terms of structural isotropy, structural diversity on nano- and (sub)microscales, structural stability, and superior photocatalytic performances; thus, nanoporous TiO 2 has received much attention from many researchers [ 1 , 2 , 3 , 4 , 5 , 6 ]. Many synthetic methods, such as sol–gel, hydrothermal coprecipitation, polyol synthesis, etc., have been reported for the synthesis of TiO 2 nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis to Porous TiO2 Nanostructures at Low Temperature for Efficient Visible-Light Degradation of Tetracycline

Lian,

Qin,

Liu

et al. 2024

Nanomaterials

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In this study, nanoporous TiO2 with hierarchical micro/nanostructures was synthesized on a large scale by a facile one-step solvothermal method at a low temperature. A series of characterizations was performed and carried out on the as-prepared photocatalysts, which were applied to the degradation of the antibiotic tetracycline (TC). The results demonstrated that nanoporous TiO2 obtained at a solvothermal temperature of 100 °C had a spherical morphology with high crystallinity and a relatively large specific surface area, composed of a large number of nanospheres. The nanoporous TiO2 with hierarchical micro/nanostructures exhibited excellent photocatalytic degradation activity for TC under simulated sunlight. The degradation rate was close to 100% after 30 min of UV light irradiation, and reached 79% only after 60 min of visible light irradiation, which was much better than the photodegradation performance of commercial TiO2 (only 29%). Moreover, the possible intermediates formed during the photocatalytic degradation of TC were explored by the density functional theory calculations and HPLC-MS spectra. Furthermore, two possible degradation routes were proposed, which provided experimental and theoretical support for the photocatalytic degradation of TC. In this study, we provide a new approach for the hierarchical micro/nanostructure of nanoporous TiO2, which can be applied in industrial manufacturing fields.

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