Photocatalytic degradation of aflatoxin B1 by activated carbon supported TiO2 catalyst

Sun, Shangde; Zhao, Ran; Xie, Yanli; Liu, Yong

doi:10.1016/j.foodcont.2019.01.014

Cited by 84 publications

(38 citation statements)

References 31 publications

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“… 4 , 5 In comparison, organic photocatalysts have large surface areas and more active sites but generate secondary pollutants. 6 , 7 A hybridized composite would harness the properties of both inorganic and bioinspired composites to provide economic and environmental gains.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Structural Studies of Manganese Ferrite and Zinc Ferrite Nanocomposites and Their Use as Photoadsorbents for Indigo Carmine and Methylene Blue Dyes

Ajibade

Nnadozie

2020

ACS Omega

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Solar-moderated adsorptions of indigo carmine and methylene blue dyes were investigated using manganese and zinc ferrite capped with biochar prepared from the root of Chromolaena odorata . TEM micrograph of the as-prepared manganese ferrite nanocomposites (MnFe 2 O 4 @BC) revealed octagonally shaped particles with an average size of 42.64 nm while the zinc ferrite nanocomposite (ZnFe 2 O 4 @BC) micrograph revealed mixtures of rod- and cone-shaped particles with an average size of 43.82 nm. Biochar capping of MnFe 2 O 4 @BC reduced the band gap from 3.63 to 2.08 eV. The nanocomposite surface areas were 197.64 and 92.14 m 2 /g for MnFe 2 O 4 @BC and ZnFe 2 O 4 @BC, respectively. Photoadsorption of the as-prepared nanocomposites showed that 10 mg of ZnFe 2 O 4 @BC effectively removed 69.07 and 98.60% of 70 mg/L indigo carmine and methylene blue dyes while MnFe 2 O 4 @BC removed 77.65 and 94.83% of indigo carmine and methylene blue dyes after 2 h of equilibration under visible light irradiation, respectively. The nonlinear form of the Langmuir isotherm had a better approximation to the experimental solid-phase concentration ( q e ) for the adsorption of indigo carmine dye using both nanocomposites. In contrast, the linear form gave a better goodness-of-fit for the adsorptions of methylene blue dye. The manganese ferrite (MnFe 2 O 4 @BC) and zinc ferrite (ZnFe 2 O 4 @BC) nanocomposites showed no inhibition of Escherichia coli and Staphylococcus aureus , which indicates that they could be used for both biological and environmental applications.

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Section: Introductionmentioning

confidence: 99%

Synthesis and Structural Studies of Manganese Ferrite and Zinc Ferrite Nanocomposites and Their Use as Photoadsorbents for Indigo Carmine and Methylene Blue Dyes

Ajibade

Nnadozie

2020

ACS Omega

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“…In view of the problem that TiO 2 modified materials are difficult to recover, many studies have proposed that TiO 2 modified by carrier loading can improve its recovery ability. It can be seen from the literature that loading TiO 2 or modified TiO 2 on diatomite, sepiolite, activated carbon, and other carriers can improve its recovery ability. Among various carriers, attapulgite (ATP) is a kind of natural clay mineral with nanofiber form, which has large specific surface area, strong ion exchange capacity, strong adsorption capacity, good chemical stability, good environmental friendliness and rich reserves, and has attracted more and more attention in the field of adsorption …”

Section: Introductionmentioning

confidence: 99%

Fabrication and Characterization of N−TiO₂/C/ATP Composite with Enhanced Visible‐Light Photocatalytic Performance for the Degradation of Polyacrylamide in Wastewater

et al. 2020

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A novel N−TiO2/C/attapulgite (N−TiO2/C/ATP) composite photocatalyst was prepared by sol‐gel method using ATP supported o‐phenanthroline modified TiO2. The as‐prepared samples were characterized by X‐ray diffraction (XRD), fourier transform infrared (FT‐IR), X‐ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), ultraviolet‐visible diffuse reflectance spectroscopy (UV‐vis DRS) and N2 adsorption–desorption measurements. The activity of these photocatalysts was tested by degrading polyacrylamide (PAM) under visible light irradiation while N−TiO2/C/ATP shows significant photocatalytic enhancement compared to pure TiO2. The optimal ratio of N−TiO2/C/ATP photocatalyst is n (TiO2): n (o‐phenanthroline)=20 : 1 and the m (N−TiO2/C): m (ATP)=1 : 1. When the initial concentration of PAM is 300 mg/L and the catalyst dosage is 1.5 g/L, the removal rate of chemical oxygen demand (COD) reaches 86.3 % at pH 2 under 2 h of visible light. The enhanced performance can be attributed to the C element in o‐phenanthroline is modified on the TiO2 surface as a surface sensitizer and the N element may enter anatase TiO2 lattice and replace to form O−Ti−N bond. Meanwhile, some TiO2 particles were permeated into the layer of ATP, which made the composite photocatalyst more stable and the N−TiO2/C/ATP composite exhibits good stability after three times recycling. In addition, the possible photocatalytic mechanism is proposed at the end.

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“…Although the paper did not provide a detailed methodology, such as excluding information on the UV wavelength used during treatment, the results indicated that the UV-TiO 2 method is superior to traditional UV treatments (Magzoub et al, 2019). In addition, Sun et al (2019) prepared TiO 2 supported by activated carbon and applied the photocatalyst for the degradation of AFB 1 . The results indicated that when TiO 2 is supported by activated carbon, the photocatalyst possess a high absorption capacity and photoactivity.…”

Section: Degradation Of Afs By Updated Uv Treatmentmentioning

confidence: 99%

“…In addition, Sun et al. (2019) prepared TiO 2 supported by activated carbon and applied the photocatalyst for the degradation of AFB 1 . The results indicated that when TiO 2 is supported by activated carbon, the photocatalyst possess a high absorption capacity and photoactivity.…”

Section: Degradation Of Mycotoxins In Food By Uv Treatmentmentioning

confidence: 99%

UV treatment for degradation of chemical contaminants in food: A review

Evans

Liu

Zhu

et al. 2021

Comp Rev Food Sci Food Safe

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Application of ultraviolet (UV) irradiation for the degradation of chemical contaminants in food products has gained more and more interest in the past two decades. The majority of the research in this field was on mycotoxins, especially aflatoxins and patulin, with limited studies on pesticide residues and other chemical contaminants in food. These studies have been focused on identifying the structure and toxicity of degradation products, investigating the influence of UV treatment factors on the degradation efficiency, determining the impact of UV treatment on the quality of food products, and developing updated UV treatment methods such as TiO2 induced photocatalytic degradation. The summary of published literatures provided insights into future research opportunities in this area, which include determining a standard for the UV treatment description, working with naturally contaminated samples rather than artificially spiked samples, conducting pilot plant or industrial scale studies, examining more targets and conducting multi‐targets studies, and developing more innovative methods for UV treatment.

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Photocatalytic degradation of aflatoxin B1 by activated carbon supported TiO2 catalyst

Cited by 84 publications

References 31 publications

Synthesis and Structural Studies of Manganese Ferrite and Zinc Ferrite Nanocomposites and Their Use as Photoadsorbents for Indigo Carmine and Methylene Blue Dyes

Synthesis and Structural Studies of Manganese Ferrite and Zinc Ferrite Nanocomposites and Their Use as Photoadsorbents for Indigo Carmine and Methylene Blue Dyes

Fabrication and Characterization of N−TiO₂/C/ATP Composite with Enhanced Visible‐Light Photocatalytic Performance for the Degradation of Polyacrylamide in Wastewater

UV treatment for degradation of chemical contaminants in food: A review

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Photocatalytic degradation of aflatoxin B1 by activated carbon supported TiO2 catalyst

Cited by 84 publications

References 31 publications

Synthesis and Structural Studies of Manganese Ferrite and Zinc Ferrite Nanocomposites and Their Use as Photoadsorbents for Indigo Carmine and Methylene Blue Dyes

Synthesis and Structural Studies of Manganese Ferrite and Zinc Ferrite Nanocomposites and Their Use as Photoadsorbents for Indigo Carmine and Methylene Blue Dyes

Fabrication and Characterization of N−TiO2/C/ATP Composite with Enhanced Visible‐Light Photocatalytic Performance for the Degradation of Polyacrylamide in Wastewater

UV treatment for degradation of chemical contaminants in food: A review

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Fabrication and Characterization of N−TiO₂/C/ATP Composite with Enhanced Visible‐Light Photocatalytic Performance for the Degradation of Polyacrylamide in Wastewater