Synthesis and Application of Fe-Doped TiO2 Nanoparticles for Photodegradation of 2,4-D from Aqueous Solution

Ebrahimi, Roya; Maleki, Afshin; Rezaee, Reza; Daraei, Hiua; Safari, Mahdi; McKay, Gordon; Lee, Seung‐Mok; Jafari, Ali

doi:10.1007/s13369-020-05071-8

Cited by 17 publications

(3 citation statements)

References 53 publications

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“…The rate constants k values were significantly increased with the rise of Ti loading. The 2.5Ti-SBA-15/C 3 N 4 catalyst displayed the highest rate constant (0.00484 min −1 ) for 2,4-D degradation, which was much higher than that obtained for other photocatalysts reported recently as ZnO–FeY [ 29 ], PdO/Al 2 O 3 –Nd 2 O 3 [ 30 ], chitosan-TiO 2 beads [ 31 ], Fe/TiO 2 [ 32 ] or photo- Fenton process [ 33 ].…”

Section: Resultsmentioning

confidence: 75%

Photocatalytic Activity of Ti-SBA-15/C3N4 for Degradation of 2,4-Dichlorophenoxyacetic Acid in Water under Visible Light

Duong

Nguyen

et al. 2022

Journal of Analytical Methods in Chemistry

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In the present study, the photocatalytic activity of Ti-SBA-15/C3N4 catalysts was investigated to degrade 2,4-Dichlorophenoxyacetic acid (2,4-D) herbicides in water under visible light irradiation. The catalysts were synthesized via a simple hydrothermal method and characterized by various analytical techniques, including SAXS, N2 adsorption-desorption isotherms, Zeta potential, PL, FT-IR, XRF, TGA, and UV-DRS. Our study indicated that the 2.5Ti-SBA-15/C3N4 had higher efficiency in the degradation of 2,4-D than Ti-SBA-15 and C3N4. The decomposition of 2,4-D reached 60% under 180 minutes of visible light irradiation at room temperature on 2.5Ti-SBA-15/C3N4. Moreover, the degradation of 2,4-D on Ti-SBA-15/C3N4 was pseudo-first-order kinetics with the highest rate constant (0.00484 min−1), which was much higher than that obtained for other photocatalysts reported recently. Furthermore, the catalyst can be reused at least two times for photodegradation of 2,4-D solution under visible light irradiation within a slight decrease in catalytic activity.

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Section: Resultsmentioning

confidence: 75%

Photocatalytic Activity of Ti-SBA-15/C3N4 for Degradation of 2,4-Dichlorophenoxyacetic Acid in Water under Visible Light

Duong

Nguyen

et al. 2022

Journal of Analytical Methods in Chemistry

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“…The figure also exhibits that particle agglomeration decreases with the increasing concentration of V dopants because V-doping on Ti increases particle dispersion. As a result, it takes much energy for crystal growth to reduce the energy accumulated on the sample surface, resulting in a more stable state and decreased agglomeration [25,[42][43]. It will give an advantage in photocatalysis applications because particles with low agglomeration can enhance photocatalytic activity due to increasing surface active sites [44] Figure 4 shows the reflectance spectra of SrBi4Ti4-nVnO15 (n= 0, 0.05, 0.1, and 0.15) and it can be seen that V dopant could reveal light absorption at visible light wavelengths.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and characterization of plate-like vanadium doped SrBi4Ti4O15 prepared via KCl molten salt method

Sari

Himmah

Hardian

et al. 2022

CST

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SrBi4Ti4O15 is one of four-layered Aurivillius compound family member that can be used as photocatalyst material that works in the violet light region. To expand its work function range can be conducted by doped with metal elements to SrBi4Ti4O15 as results reduced its band gap energy. In this research, we synthesized vanadium doped SrBi4Ti4O15 (SrBi4Ti4-nVnO15 (n= 0, 0.05, 0.1, and 0.15)) by molten salt method (used KCl salt). The diffractogram sample showed that the target compounds SrBi4Ti4-nVnO15 (n= 0, 0.05, 0.1, and 0.15) had been successfully synthesized with the space group A21am without impurities. The SEM micrographs showed the particle shape of SrBi4Ti4-nVnO15 (n= 0, 0.05, 0.1, and 0.15) was plate-like (sheets) and V dopant did not cause agglomeration. The result of Kubelka-Munk equation calculation showed that the V dopant can reduced the band gap energy value from 3.04 eV (408 nm) to 2.84 eV (437 nm)

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“…The molecular imprinting approach described in [54] leads to a selective photodegradation of 2,4-D, but a less performing activity with the 75% of removal with an UV lamp in 4 h. The P25 nanobelts, prepared by Chenchana et al [56], have obtained the highest percentage of degradation (99% after 2 h), but the employment of UV source and Au nanoparticles makes the system less convenient and more expensive. The Fe-doping approach proposed in [57] leads to a moderate removal of pollutant, considering the lower amount of photocatalyst employed. However, the light source used is considerably more powerful, so less cheap and sustainable.…”

Section: Photodegradation Resultsmentioning

confidence: 99%

One-Pot Synthesis of TiO2-rGO Photocatalysts for the Degradation of Groundwater Pollutants

et al. 2021

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A non-conventional approach to prepare titanium dioxide-reduced graphene oxide (TiO2-rGO) nanocomposites based on solar photoreduction is here presented. The standard hydro-solvothermal synthesis of the TiO2-rGO composites requires high temperatures and several steps, whereas the proposed one-pot preparation allows one to obtain the photocatalysts with a simple and green procedure, by exploiting the photocatalytic properties of titania activated by the solar irradiation. The TiO2-rGO catalysts were tested in the solar photodegradation of a widely adopted toxic herbicide (2,4-Dichlorophenoxyacetic acid, 2,4-D), obtaining the 97% of degradation after 3 h of irradiation. The as-prepared TiO2-rGO composites were more active compared to the same photocatalysts prepared through the conventional thermal route. The structural, optical, and textural properties of the composites, determined by Raman, Photoluminescence, Fourier Transform InfraRed (FTIR), UV-vis diffuse reflectance (DRS) spectroscopies, and N2 absorption-desorption measurements, showed as the solar irradiation favors the reduction of graphene oxide with higher efficiency compared to the thermal-driven synthesis. Furthermore, the possible toxicity of the as-synthesized composites was measured exposing nauplii of microcrustacean Artemia sp. to solutions containing TiO2-rGO. The good results in the 2,4-D degradation process and the easiness of the TiO2-rGO synthesis allow to consider the proposed approach a promising strategy to obtain performing photocatalysts.

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Synthesis and Application of Fe-Doped TiO2 Nanoparticles for Photodegradation of 2,4-D from Aqueous Solution

Cited by 17 publications

References 53 publications

Photocatalytic Activity of Ti-SBA-15/C3N4 for Degradation of 2,4-Dichlorophenoxyacetic Acid in Water under Visible Light

Photocatalytic Activity of Ti-SBA-15/C3N4 for Degradation of 2,4-Dichlorophenoxyacetic Acid in Water under Visible Light

Synthesis and characterization of plate-like vanadium doped SrBi4Ti4O15 prepared via KCl molten salt method

One-Pot Synthesis of TiO2-rGO Photocatalysts for the Degradation of Groundwater Pollutants

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