UV–Visible Light Driven Photocatalytic Degradation of Ciprofloxacin by N,S Co-doped TiO2: The Effect of Operational Parameters

Nguyen, Linh T.; Nguyen, Hanh Thi Hong; Pham, Thanh-Dong; Tran, Dinh Trinh; Chu, Hoan Thi; Dang, Hoai Thu; Nguyen, Van‐Huy; Nguyen, Kien T.; Pham, Thuy T.; Bruggen, Bart Van der

doi:10.1007/s11244-020-01319-7

Cited by 50 publications

(10 citation statements)

References 52 publications

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“…Since RSB/N,S-TiO 2 , ASB/N,S-TiO 2, and CSB/N,S-TiO 2 have the same XRD spectrum, a general plot called sugarcane bagasse/N,S-TiO 2 is shown. The peaks at the 2-Theta angles correspond to the (101), (103), (200), and (105) diffraction planes of the anatase phase [30]. The pre-treatments of the sugarcane bagasse did not change the crystal structure of the photocatalyst.…”

Section: Xrdmentioning

confidence: 96%

“…The sugarcane bagasse/N,S-TiO 2 composite was prepared by a similar method reported in a previous study [30] by adding 3g sugarcane bagasse to the thiourea and nitric acid solution. The samples were denoted as RSB/N,S-TiO 2 , ASB/N,S-TiO 2, and CSB/N,S-TiO 2 after calcination at 450 • C in a furnace for 2 h.…”

Section: Synthesis Of Sugarcane Bagasse/ns-tio 2 Compositementioning

confidence: 99%

“…Experimental design and measurement of antibiotic concentration after the reaction were conducted as described elsewhere [30]. An adequate weight of synthesized sample was added in 100 mL CIP solution until achieving an adsorption-desorption equilibrium (45 min) before exposure UV-vis light from a halogen lamp of 500 W under atmospheric pressure and at room temperature.…”

Section: Experimental Approachmentioning

confidence: 99%

“…RSB/N,S-TiO 2 , ASB/N,S-TiO 2 , and CSB/N,S-TiO 2 composite samples were tested to remove CIP in comparison to the synthetic N,S-TiO 2 that was prepared using the procedure described in the literature [30]. The effects of pH, dosage, contact time, and the initial concentration on CIP removal were studied.…”

Section: Experimental Approachmentioning

confidence: 99%

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Combined Adsorption and Photocatalytic Degradation for Ciprofloxacin Removal Using Sugarcane Bagasse/N,S-TiO2 Powder Composite

Nguyen

Nguyen²,

Nguyen³

et al. 2021

Water

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N,S-TiO2 deposited on three kinds of pre-treated sugarcane bagasse was synthesized via a sol–gel method. The obtained composites were characterized by various techniques, including scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), and photoluminescence spectroscopy (PL). UV-visible induced degradation of ciprofloxacin was investigated. The influence of some experimental parameters such as contact time, pH, dosage, and initial concentration on the efficiency of ciprofloxacin elimination was also evaluated. The highest efficiency was observed for the alkaline pre-treated sugarcane bagasse combined with N,S-TiO2, about 86% under optimal conditions (contact time 150-min irradiation, pH 5.5–6, dosage 0.5 g L−1, and the initial concentration CIP 30 ppm). There may be a rapid ciprofloxacin transition from the adsorption site to the photocatalytic site, and the alkaline pre-treated sugarcane bagasse/N,S-TiO2 prevented the recombining of holes and electrons of the photocatalyst. Furthermore, the alkaline pretreatment sugarcane bagasse/N,S-TiO2 composite material was sustainable, with only a 10% reduction after reusing the material three times. The presence of sugarcane bagasse made the material easy to recover from the liquid phase.

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Section: Xrdmentioning

confidence: 96%

Section: Synthesis Of Sugarcane Bagasse/ns-tio 2 Compositementioning

confidence: 99%

Section: Experimental Approachmentioning

confidence: 99%

Section: Experimental Approachmentioning

confidence: 99%

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Combined Adsorption and Photocatalytic Degradation for Ciprofloxacin Removal Using Sugarcane Bagasse/N,S-TiO2 Powder Composite

Nguyen

Nguyen²,

Nguyen³

et al. 2021

Water

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“…4d). For better understanding the difference in the degradation performance using different catalysts, kinetic study for photodegradation of LVF is evaluated as the equation for pseudo-rst-order kinetic model [53]:…”

Section: Photocatalytic Performancementioning

confidence: 99%

Plant-based green fabrication of S-scheme CuO/CdO/bentonite heterojunction with enhanced photocatalytic performance for degradation of levofloxacin

Mahjoore

Honarmand

Aryafar

2022

Preprint

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In this research, for the first time, CuO and CdO nanoparticles (NPs) were synthesized and anchored on layered bentonite using Ferula persica in the interest of developing a novel S-scheme nano-heterojunction (denoted as CuO-CdO-BT). Ferula persica acted as a naturally-sourced reducing agent and stabilizer for the synthesis of NPs. The performance of CuO-CdO-BT was evaluated for the degradation of levofloxacin from aqueous solution under sunlight. The bentonite as a support not only reduced the agglomeration of CuO and CdO NPs, but also decreased the size of biosynthesized NPs, which in turn increased the active surface of NPs and the photodegardation efficiency. The effect of operational reaction system variables was examined in an attempt to optimize the photocatalytic capability of CuO-CdO-BT. Under optimum conditions (catalyst dosage = 0.4 g/L, LVF concentration = 10 mg/L and pH = 8), 96.11% of levofloxacin was degraded using CuO-CdO-BT after 30 min with degradation kinetic of 0.108 min− 1, which was about 2.4 and 4.2 times higher than those of bare CuO and CdO NPs, respectively. The prominent role of superoxide radicals (\({\text{O}}_{2}^{\bullet -})\) and hydroxyl radicals (·OH) was determined in the photocatalytic reaction by the radical quenching experiments. The possible levofloxacin pathways were suggested based on the HPLC-MS analysis. High stability was demonstrated for biosynthesized photocatalyst during recycling experiments and 88.56% degradation efficiency was obtained after three cycles of photodegradation. The unique structural features of the new generation of S-scheme heterojunction and green synthesis of NPs using plant provide promising photocatalysts with synergistic features to improve wastewater treatment.

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Immobilization of Bi₂WO₆ on Polymer Membranes for Photocatalytic Removal of Micropollutants from Water – A Stable and Visible Light Active Alternative

Fischer,

Abdul Latif,

Griebel

et al. 2024

Global Challenges

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In this work, bismuth tungstate Bi2WO6 is immobilized on polymer membranes to photocatalytically remove micropollutants from water as an alternative to titanium dioxide TiO2. A synthesis method for Bi2WO6 preparation and its immobilization on a polymer membrane is developed. Bi2WO6 is characterized using X‐ray diffraction and UV–vis reflectance spectroscopy, while the membrane undergoes analysis through scanning electron microscopy, X‐ray photoelectron spectroscopy, and degradation experiments. The density of states calculations for TiO2 and Bi2WO6, along with PVDF reactions with potential reactive species, are investigated by density functional theory. The generation of hydroxyl radicals OH• is investigated via the reaction of coumarin to umbelliferone via fluorescence probe detection and electron paramagnetic resonance. Increasing reactant concentration enhances Bi2WO6 crystallinity. Under UV light at pH 7 and 11, the Bi2WO6 membrane completely degrades propranolol in 3 and 1 h, respectively, remaining stable and reusable for over 10 cycles (30 h). Active under visible light with a bandgap of 2.91 eV, the Bi2WO6 membrane demonstrates superior stability compared to a TiO2 membrane during a 7‐day exposure to UV light as Bi2WO6 does not generate OH• radicals. The Bi2WO6 membrane is an alternative for water pollutant degradation due to its visible light activity and long‐term stability.

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UV–Visible Light Driven Photocatalytic Degradation of Ciprofloxacin by N,S Co-doped TiO2: The Effect of Operational Parameters

Cited by 50 publications

References 52 publications

Combined Adsorption and Photocatalytic Degradation for Ciprofloxacin Removal Using Sugarcane Bagasse/N,S-TiO2 Powder Composite

Combined Adsorption and Photocatalytic Degradation for Ciprofloxacin Removal Using Sugarcane Bagasse/N,S-TiO2 Powder Composite

Plant-based green fabrication of S-scheme CuO/CdO/bentonite heterojunction with enhanced photocatalytic performance for degradation of levofloxacin

Immobilization of Bi₂WO₆ on Polymer Membranes for Photocatalytic Removal of Micropollutants from Water – A Stable and Visible Light Active Alternative

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UV–Visible Light Driven Photocatalytic Degradation of Ciprofloxacin by N,S Co-doped TiO2: The Effect of Operational Parameters

Cited by 50 publications

References 52 publications

Combined Adsorption and Photocatalytic Degradation for Ciprofloxacin Removal Using Sugarcane Bagasse/N,S-TiO2 Powder Composite

Combined Adsorption and Photocatalytic Degradation for Ciprofloxacin Removal Using Sugarcane Bagasse/N,S-TiO2 Powder Composite

Plant-based green fabrication of S-scheme CuO/CdO/bentonite heterojunction with enhanced photocatalytic performance for degradation of levofloxacin

Immobilization of Bi2WO6 on Polymer Membranes for Photocatalytic Removal of Micropollutants from Water – A Stable and Visible Light Active Alternative

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Product

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Immobilization of Bi₂WO₆ on Polymer Membranes for Photocatalytic Removal of Micropollutants from Water – A Stable and Visible Light Active Alternative