Photocatalytic degradation of methylene blue dye by TiO2 supported on magnetic core shell (Si@Fe) surface

Moura, Stéfany Gonçalves de; Ramalho, Teodorico C.; Oliveira, Luiz C.A.; Dauzakier, Ligiane C L; Magalhães, Fabiano

doi:10.1007/s13738-021-02356-z

Cited by 18 publications

(6 citation statements)

References 55 publications

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“…The size of the particle measured 4 nm. After a duration of 120 minutes, the efficiency of degradation was observed to be 73% [24]. In test of degradation of MB dye, rGO/TiO2/ZnO was used.…”

Section: Photocatalytic Activity Of Tio2 Npsmentioning

confidence: 99%

A Mini Review of Photocatalytic Effects of Nano TiO_2 and an Analysis of Their Effectiveness

MD. Golam Sazid,

Asraf Ibna Helal,

Islam

et al. 2023

Proceedings of International Exchange and Innovation Conference on Engineering &Amp; Sciences (IEICES)

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Nanomaterials can improve performance and can be developed in innovative ways, which will impact multiple sectors. Nano TiO2 is different in behavior from its larger counterparts as the properties rely on size of the materials. TiO2 nanoparticles (NPs) have a big benefit over other substances because they are small and have a high ratio of surface area to volume. They are great for photocatalysis and can break down a wide range of dyes. As they can act as photocatalysts, TiO2 NPs are becoming more and more important in environmental uses. Several researchers have used TiO2 to degrade various dyes. The ability of TiO2 NPs as photocatalysts depends on several factors, such as their crystalline form, particle size etc. Our systematic review will reveal that the factors that have impact on dye degradation efficiency of TiO2 where the dyes methylene blue (MB), methyl orange (MO), rhodamine B (RB) are in concern.

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Section: Photocatalytic Activity Of Tio2 Npsmentioning

confidence: 99%

A Mini Review of Photocatalytic Effects of Nano TiO_2 and an Analysis of Their Effectiveness

MD. Golam Sazid,

Asraf Ibna Helal,

Islam

et al. 2023

Proceedings of International Exchange and Innovation Conference on Engineering &Amp; Sciences (IEICES)

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“…Another limitation is the fact that it is made up of fine particles and, consequently, is difficult to recover. However, it is widely studied in photocatalytic processes, due to its proximity to a semiconductor determined to be good (MOURA et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

EVALUATION OF PHOTOCATALYTIC REACTORS FOR DEGRADATION OF REACTIVE BLACK DYE 5 IN THE PRESENCE OF TiO2

Moura,

Oliveira

et al. 2024

JER

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In this work, two types of reactors were evaluated (tubular and tank) under different experimental conditions (with and without aeration and temperature control) to degrade the textile dye Reactive Black 5 (PR5), using TiO2 as a photocatalyst. A jacketed tubular reactor made of PVC and a glass cylinder was used, equipped with a 36 W Hg lamp (submerged in the contaminant solution), temperature control and aerator, and a second tank-type reactor equipped with two Hg lamps (15 and 36 W) located above the contaminating solution. In experiments carried out in the tubular reactor without temperature control, discoloration results were 99% (with aeration) and 87% (without aeration). The values obtained for reactions with temperature controls were 55% (10 °C), 95% (25 °C) and 99% (35 °C). PR5 photolysis reactions showed that the dye discolored by approximately 4, 25 and 35% in experiments carried out at 10, 25 and 35°C, respectively. For the reactions in the tank reactor, the discoloration of PR5 during the photocatalytic reactions carried out with and without aeration was around 22%, while the dye photolysis reactions did not reach 1% discoloration. Therefore, it can be concluded that the tubular reactor is more efficient for the degradation of PR5, since the UV lamp immersed in the dye solution and the design of the reactor favor the reaction and aeration of the system, which are important factors for the best performance of a photocatalytic reactor.

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“…53 Comparison of Photocatalytic Activity of TiO 2 − P(EGDA) with Previous Studies. Usually, TiO 2 NPs are coated on the surface of a support (polystyrene, 54 Si@Fe, 55 reduced graphene oxide) 56 for photocatalytic degradation of MB due to which the photocatalytic system does not remain stable for their reuse in large number of cycles. Moreover, high light irradiance is needed for the complete degradation of MB.…”

Section: ■ Introductionmentioning

confidence: 99%

Microfluidic Fabrication of Monodisperse and Recyclable TiO₂-Poly(ethylene glycol) Diacrylate Hybrid Microgels for Removal of Methylene Blue from Aqueous Medium

Chen,

Farooqi,

Bolognesi

et al. 2023

Langmuir

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Nearly monodisperse titanium oxide–polyethylene glycol diacrylate [TiO 2 –P(EGDA)] hybrid microbeads containing 0.5 wt % TiO 2 nanoparticles entrapped within a P(EGDA) cross-linked polymeric network were synthesized using a modular Lego-inspired glass capillary microfluidic device. TiO 2 –P(EGDA) hybrid microgels were characterized by optical microscopy, scanning electron microscopy, X-ray diffraction, energy dispersive X-ray spectroscopy, and thermogravimetric analysis. The fabricated TiO 2 –P(EGDA) hybrid microgel system showed 100% removal efficiency of methylene blue (MB) from its 1–3 ppm aqueous solutions after 4 h of UV light irradiation at 0.2 mW/cm 2 at the loading of 25 g/L photocatalyst beads in the reaction mixture, corresponding to the loading of naked TiO 2 of just 0.025 g/L. No decrease in photocatalytic efficiency was observed in 10 repeated runs with recycled photocatalyst using a fresh 1 ppm MB solution in each cycle. The rate of photocatalytic degradation was controlled by the UV light irradiance, catalyst loading, and the initial dye concentration. Physical adsorption of MB onto the surface of composite microgel was also observed. The adsorption data was best fitted with the Langmuir adsorption isotherm and the Elovich kinetic model. TiO 2 –P(EGDA) microgel beads are biocompatible, can be prepared with a tunable size in the microfluidic device, and can easily be separated from the reaction mixture by gravity settling. The TiO 2 –P(EGDA) system can be used for the removal of other toxic dyes and micropollutants from industrial wastewater.

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Photocatalytic degradation of methylene blue dye by TiO2 supported on magnetic core shell (Si@Fe) surface

Cited by 18 publications

References 55 publications

A Mini Review of Photocatalytic Effects of Nano TiO_2 and an Analysis of Their Effectiveness

A Mini Review of Photocatalytic Effects of Nano TiO_2 and an Analysis of Their Effectiveness

EVALUATION OF PHOTOCATALYTIC REACTORS FOR DEGRADATION OF REACTIVE BLACK DYE 5 IN THE PRESENCE OF TiO2

Microfluidic Fabrication of Monodisperse and Recyclable TiO₂-Poly(ethylene glycol) Diacrylate Hybrid Microgels for Removal of Methylene Blue from Aqueous Medium

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Photocatalytic degradation of methylene blue dye by TiO2 supported on magnetic core shell (Si@Fe) surface

Cited by 18 publications

References 55 publications

A Mini Review of Photocatalytic Effects of Nano TiO_2 and an Analysis of Their Effectiveness

A Mini Review of Photocatalytic Effects of Nano TiO_2 and an Analysis of Their Effectiveness

EVALUATION OF PHOTOCATALYTIC REACTORS FOR DEGRADATION OF REACTIVE BLACK DYE 5 IN THE PRESENCE OF TiO2

Microfluidic Fabrication of Monodisperse and Recyclable TiO2-Poly(ethylene glycol) Diacrylate Hybrid Microgels for Removal of Methylene Blue from Aqueous Medium

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Microfluidic Fabrication of Monodisperse and Recyclable TiO₂-Poly(ethylene glycol) Diacrylate Hybrid Microgels for Removal of Methylene Blue from Aqueous Medium