Implanting TiO2 @MoS2/BiVO4 nanocomposites via sonochemically assisted photoinduced charge carriers promotes highly efficient photocatalytic removal of tetracycline

raj, Muniyandi Govinda; Vijayakumar, E.; Preetha, Rajaraman; Narendran, Moorthy Gnanasekar; Neppolian, Bernaurdshaw; Bosco, A. John

doi:10.1016/j.jallcom.2022.167252

Cited by 17 publications

(6 citation statements)

References 65 publications

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“…This indicated that the synthesized TiO2-100 had a stronger degradation ability than P25, and it was comparable to the degradation rate constants of TC by the TiO2-graphitized carbon composite prepared by Zhang [62]. Table S3 summarizes some of the studies on the degradation of TC by TiO2 catalysts [32,53,61,[63][64][65][66][67][68]. It can be concluded from Table S3 that as-prepared TiO2 nano-particles can efficiently remove TC compared to various photocatalysts.…”

Section: Photocatalytic Degradation and Mechanisms Of Tcmentioning

confidence: 73%

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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Section: Photocatalytic Degradation and Mechanisms Of Tcmentioning

confidence: 73%

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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“…Because the E CB of B-rGO was sufficiently negative for the O 2 / • O 2 – potential, electrons on the E CB of B-rGO can interact with disintegrated O 2 adsorbed on the catalyst’s surface to form an • O 2 – radical. Meanwhile, the holes on the E VB of B-rGO migrate to the E VB of SrFeO 3 , and then, the holes react with H 2 O to generate a hydroxy radical. − …”

Section: Resultsmentioning

confidence: 99%

“Quasi-In Situ Synthesis of Oxygen Vacancy-Enriched Strontium Iron Oxide Supported on Boron-Doped Reduced Graphene Oxide to Elevate the Photocatalytic Destruction of Tetracycline”

et al. 2023

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The efficient use of visible light is necessary to take advantage of photocatalytic processes in both indoor and outdoor circumstances. Precisely manipulating the in situ growth method of heterojunctions is an effective way to promote photogenerated charge separation. Herein, the SrFeO 3 @B-rGO catalyst was prepared by an in situ growth method. At a loading of 10 wt % B-rGO, the nanocomposites revealed an excellent morphology and thermal, optical, electrochemical, and mechanical properties. X-ray diffraction analysis revealed the cubic spinel structure and a space group of Pm ̅ 3m for SrFeO 3 . High-resolution scanning electron microscopy and high-resolution transmission electron microscopy show the core−shell formation between SrFeO 3 and B-rGO. Furthermore, density functional theory of SrFeO 3 was performed to find its band structure and density of states. The SrFeO 3 @B-rGO nanocomposite shows the degradation rate of tetracycline (TC) reaching 92% in 75 min and the highest rate constant of 0.0211 min −1 . To improve the catalytic removal rate of antibiotics, the efficiency of e − and h + separation must be improved, as well as the generation of additional radicals. Radical trapping tests and the electron paramagnetic resonance method indicated that the combination of Fe 2+ and Fe 3+ in SrFeO 3 effectively separated e − and h + while also promoting the development of the superoxide anion ( • O 2 − ) to accelerate TC degradation. The entire TC degradation pathway using high-performance liquid chromatography and its mechanism were discussed. As a whole, this study delineates that photocatalysis is a viable strategy for the treatment of environmental antibiotic wastewater.

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“…In this system, CO 3 2À or HCO 3 À reacted rapidly with OH to form CO 3 À , which could catalyze the degradation of organic matter and mineralized it. Ren et al 164 167 prepared TiO 2 @MoS 2 /BiVO 4 nanocomposites for the photocatalytic degradation of TC by a simple hydrothermal method, which followed a Z-scheme charge transfer mechanism that promoted charge transfer and targeted accumulation. Das and Ahn 168 proposed a simple hydrothermal process for the synthesis of semiconducting CdS nanorods using ethylenediamine as a ligand.…”

Section: Antibioticsmentioning

confidence: 99%

“…Fig. 9 Degradation of tetracycline by different photocatalysts [SubPc-4/ TiO 2 , 158 Fe 0 @black-TiO 2 , 161 PbS/CaCO 3 , 163 g-Fe 2 O 3 /b-TiO 2 ,164 ZnS@ MoS 2 ,165 (BiOI)/exfoliated g-C 3 N 4 , 166 TiO 2 @MoS 2 /BiVO 4 ,167 CdS NRs,168 and Ag/AgCl@Ti 3+ -TiO2 169 ].…”

mentioning

confidence: 99%

Recent advances of semiconductor photocatalysis for water pollutant treatment: mechanisms, materials and applications

Wu,

Li,

Wang

et al. 2023

Phys. Chem. Chem. Phys.

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Implanting TiO2 @MoS2/BiVO4 nanocomposites via sonochemically assisted photoinduced charge carriers promotes highly efficient photocatalytic removal of tetracycline

Cited by 17 publications

References 65 publications

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

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

“Quasi-In Situ Synthesis of Oxygen Vacancy-Enriched Strontium Iron Oxide Supported on Boron-Doped Reduced Graphene Oxide to Elevate the Photocatalytic Destruction of Tetracycline”

Recent advances of semiconductor photocatalysis for water pollutant treatment: mechanisms, materials and applications

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