Photocatalytic degradation of paracetamol over magnetic flower-like TiO 2 /Fe 2 O 3 core-shell nanostructures

Abdel‐Wahab, Aboel‐Magd A.; Al-Shirbini, Al-Sayed; Mohamed, Omima S.; Nasr, Osama

doi:10.1016/j.jphotochem.2017.07.030

Cited by 141 publications

(29 citation statements)

References 41 publications

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“…Moreover, O 2 •− reacts with H + to form • OOH, followed by rapid decomposition to • OH radicals, while the accumulated holes in the VB of γ-Fe 2 O 3 could oxidize H 2 O and OH − to form • OH radicals that are involved in the photodegradation reaction of organic contaminants [ 52 , 53 , 54 , 55 , 56 ]. The photodegradation pathway of MB over the photocatalysts is schematically depicted in Figure 15 [ 57 , 58 , 59 ].…”

Section: Resultsmentioning

confidence: 99%

Magnetically Recoverable TiO2/SiO2/γ-Fe2O3/rGO Composite with Significantly Enhanced UV-Visible Light Photocatalytic Activity

et al. 2020

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In this paper, we report the preparation of a new composite (TiO2/SiO2/γ-Fe2O3/rGO) with a high photocatalytic efficiency. The properties of the composite were examined by different analyses, including X-ray diffraction (XRD), field emission scanning electron microscope (FE-SEM), photoluminescence (PL), UV-Visible light diffuse reflectance spectroscopy, Fourier transform infrared spectroscopy (FTIR), Raman, vibrating-sample magnetometer (VSM), and nitrogen gas physisorption (BET) studies. The photocatalytic efficiency of the proposed composite was evaluated by the degradation of methylene blue under UV and visible light, and the results were compared with titanium dioxide (TiO2), where degradation increased from 30% to 84% and 4% to 66% under UV and visible light, respectively. The significant increase in photocatalytic activity may be explained by the higher adsorption of dye on the surface of the composite and the higher separation and transfer of charge carriers, which in turn promote active sites and photocatalytic efficiency.

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Section: Resultsmentioning

confidence: 99%

Magnetically Recoverable TiO2/SiO2/γ-Fe2O3/rGO Composite with Significantly Enhanced UV-Visible Light Photocatalytic Activity

et al. 2020

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“…This may due to the large amounts of titanium precursor and ethanol used in the synthesizing process of the nanocomposite catalyst. Comparatively, in other experimental work reported by many authors [[3], [4], [5], [6], [7]], the nanocomposite catalyst was produced using a small volume of TTIP and FeCl 3. It is because in this study, the synthesized nanocomposite catalyst will be used in a compound parabolic collecting reactor (CPCR) as a large-scale study under solar irradiation.…”

Section: Methods Detailsmentioning

confidence: 97%

Large-scale study for the photocatalytic degradation of paracetamol using Fe2O3/TiO2 nanocomposite catalyst and CPC reactor under natural sunlight radiations

2019

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“…The determination of the optimal TiO 2 concentration is crucial to ensure the maximum degradation of the pharmaceuticals involved in this study. 25,26 Therefore, different dosages of TiO 2 were tested in the aqueous matrices, aiming to verify how the matrix components affect this operational parameter in the degradation of the pharmaceuticals (Figure 1). The kinetic parameters (Table S2, SI section) were determined by plotting the results of (C is the target compound concentration at a determined time X, C 0 is the initial target compound concentration) versus time, which is characteristic of a pseudo-first-order kinetics model.…”

Section: Influence Of Tio 2 Concentrationmentioning

confidence: 99%

Matrix Effects on the Degradation of Gemfibrozil, Hydrochlorothiazide, and Naproxen by Heterogeneous Photocatalysis

Paniagua¹,

Marson²,

Ricardo³

et al. 2020

J. Braz. Chem. Soc.

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The degradation of a pharmaceutical mixture (gemfibrozil, hydrochlorothiazide and naproxen) by TiO 2 /UV-A in different aqueous matrices was evaluated. The matrix components affected the operational conditions, rate constants, and removal efficiency of the pharmaceuticals, as well as toxicity. For sewage treatment plant effluent, a TiO 2 concentration threefold higher (450 mg L −1) and an irradiation time 1.5-3 times longer were required to reach the same efficiency of degradation as the pharmaceuticals in deionized water and surface water matrices. An improvement in the rate constants and the removal efficiency of the pharmaceuticals was achieved by adding 6 mg L −1 of H 2 O 2 and 150 mg L −1 of TiO 2 in deionized water and surface water, but not in the sewage treatment plant effluent, due to the coupling of 450 mg L −1 of TiO 2 and 50-200 mg L −1 of H 2 O 2. Overall, TiO 2 /UV-A efficiently degraded all compounds, but an additional step is needed for the removal of residual toxicity.

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Photocatalytic degradation of paracetamol over magnetic flower-like TiO 2 /Fe 2 O 3 core-shell nanostructures

Cited by 141 publications

References 41 publications

Magnetically Recoverable TiO2/SiO2/γ-Fe2O3/rGO Composite with Significantly Enhanced UV-Visible Light Photocatalytic Activity

Magnetically Recoverable TiO2/SiO2/γ-Fe2O3/rGO Composite with Significantly Enhanced UV-Visible Light Photocatalytic Activity

Large-scale study for the photocatalytic degradation of paracetamol using Fe2O3/TiO2 nanocomposite catalyst and CPC reactor under natural sunlight radiations

Matrix Effects on the Degradation of Gemfibrozil, Hydrochlorothiazide, and Naproxen by Heterogeneous Photocatalysis

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