Enhanced photocatalytic degradation of the herbicide 2,4-dichlorophenoxyacetic acid by Pt/TiO2–SiO2 nanocomposites

González, Alberto Estrella; Asomoza, M.; Solís, S.; Sánchez, Miguel Ángel García; Cipagauta‐Díaz, Sandra

doi:10.1007/s11144-020-01865-x

Cited by 21 publications

(9 citation statements)

References 31 publications

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“…The UV–vis spectrum of 2,4-D shows 2 main peaks at 285 and 230 nm. The peak at 285 nm is specified to the n → π* transitions of the C–Cl bonds and the peak at 230 nm is assigned to π → π* transition of aromatics rings (González et al 2020 ). After 30 min in the dark, ~ 6% of the herbicide molecules have been adsorbed on the surface of Ti-Fe 2 O 3 .…”

Section: Resultsmentioning

confidence: 99%

Eco-friendly and solar light-active Ti-Fe2O3 ellipsoidal capsules’ nanostructure for removal of herbicides and organic dyes

Mohamed

Besisa

2022

Environ Sci Pollut Res

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In this work, Ti-doped Fe2O3 with hollow ellipsoidal capsules nanostructure has been prepared in a green manner using plant extract (flax seed). This new green hematite nanomaterial has been evaluated as photocatalyst for water treatment by testing its activity for degradation of bromophenol blue dye (BPB) and 2,4-dichlorophenoxy acetic acid (2,4-D) herbicide. For a better understanding of the green material properties, a comparison with the pristine Fe2O3 nanospheres previously prepared by the same procedure is included. Structural and optical properties of the green prepared materials are studied. The results revealed the success doping of Ti4+ at Fe3+ site, without forming any of TiO2 phases. It was also found that the Ti doping resulted in the reduction of the band gap of Fe2O3 as well as changing the morphology. The Ti-doped Fe2O3 nanomaterial exhibited an enhanced photocatalytic activity either for BPB dye or for 2,4-D degradation with more than 2 times higher rate than that using pristine Fe2O3.

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Section: Resultsmentioning

confidence: 99%

Eco-friendly and solar light-active Ti-Fe2O3 ellipsoidal capsules’ nanostructure for removal of herbicides and organic dyes

Mohamed

Besisa

2022

Environ Sci Pollut Res

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“…Pesticides can affect the nervous system and lead to symptoms such as headache, dizziness, confusion, and seizures . Exposure to pesticides can cause respiratory problems, particularly in agricultural workers who are frequently exposed to pesticides . Symptoms can include shortness of breath, wheezing, and coughing.…”

Section: Introductionmentioning

confidence: 99%

“…It is important to note that the severity of pesticide-related illnesses can vary based on the kind of pesticide, the dose and duration of exposure, and individual factors such as age, health status, and genetic susceptibility. Taking steps to minimize exposure to pesticides, such as using protective equipment and adopting alternative pest control methods, can help to reduce the risk of illness …”

Section: Introductionmentioning

confidence: 99%

Efficient Adsorption and Removal of the Herbicide 2,4-Dichlorophenylacetic Acid from Aqueous Solutions Using MIL-88(Fe)-NH₂

Alluhaybi,

Alharbi,

Alshammari

et al. 2023

ACS Omega

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Metal−organic frameworks (MOFs), a material known for its multifunctionality, chemical stability, and high surface area, are now commonly utilized as an adsorbent for water treatment. The MOF (MIL-88(Fe)-NH 2 ) was synthesized and used to remove the commonly used toxic herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) from water. The MIL-88(Fe)-NH 2 MOF was fully characterized using multiple techniques. A systematic investigation was conducted to evaluate the key parameters that impact the adsorption process, which include coexisting anions, adsorbent dosage, and solution pH. The adsorption isotherm was fitted using the Langmuir model, while the kinetics were fitted using pseudo-second-order. The adsorption process was both chemisorption and endothermic. The capacity for adsorption increased with rising temperatures. The MIL-88(Fe)-NH 2 adsorbent has a maximum adsorption capacity of 345.25 mg g −1 for removing 2,4-D, significantly higher than previous adsorbents used for this purpose. The adsorption mechanism could be ascribed to hydrogen bonding, pore filling, π−π conjugations between the 2,4-D molecules and the MIL-88(Fe)-NH 2 adsorbent, and electrostatic interactions. Furthermore, the adsorption capacity of MIL-88(Fe)-NH 2 adsorbent showed only a slight decrease after five successive recycles, and it could be easily regenerated through solvent washing. When used in environmental water samples, especially those containing electronic wastes, the MIL-88(Fe)-NH 2 adsorbent demonstrated satisfactory adsorption capacity and reusability. The MIL-88(Fe)-NH 2 adsorbent is more practical and reusable and has better adsorption capacity and shorter equilibrium time compared to previously reported adsorbents.

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“…It is important to mention that the World Health Organization established a maximum concentration of 2,4-D in drinking water equal to 70 ppb [11]. In order to achieve its effective treatment, several strategies have been tested including: electrocoagulation [12], biological degradation [13], catalytic ozonation [14], adsorption [15] and photocatalysis [16].…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic degradation of the 2,4-dichlorophenoxyacetic acid herbicide using supported iridium materials

Martínez¹,

Ortega

Sarmiento

et al. 2021

Cienc. En Desarro.

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In this work, the effect of the addition of iridium on TiO2 and Nb2O5 supports obtained by wet impregnation method was evaluated in the photocatalytic degradation of 2,4-dichlorophenoxiacetic acid under UV irradiation. The synthetized materials were analyzed by different techniques in order to determinate their physicochemical properties. In general, it was observed that the addition of iridium modifies the surface area, band gap energy and it enhances the crystallinity of the materials. Besides, an increase in the photoactivity in the degradation of the herbicide was evidenced using the materials modified. However, the Ir/TiO2 photocatalyst possess the best photocatalytic behavior toward the degradation and possible mineralization of the herbicide. The improved performance of the photocatalyst could be argued by the role of the iridium particles as electron collectors favoring the effective separation of the charge carriers and, as consequence, increasing the degradation of the molecule.

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Enhanced photocatalytic degradation of the herbicide 2,4-dichlorophenoxyacetic acid by Pt/TiO2–SiO2 nanocomposites

Cited by 21 publications

References 31 publications

Eco-friendly and solar light-active Ti-Fe2O3 ellipsoidal capsules’ nanostructure for removal of herbicides and organic dyes

Eco-friendly and solar light-active Ti-Fe2O3 ellipsoidal capsules’ nanostructure for removal of herbicides and organic dyes

Efficient Adsorption and Removal of the Herbicide 2,4-Dichlorophenylacetic Acid from Aqueous Solutions Using MIL-88(Fe)-NH₂

Photocatalytic degradation of the 2,4-dichlorophenoxyacetic acid herbicide using supported iridium materials

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Enhanced photocatalytic degradation of the herbicide 2,4-dichlorophenoxyacetic acid by Pt/TiO2–SiO2 nanocomposites

Cited by 21 publications

References 31 publications

Eco-friendly and solar light-active Ti-Fe2O3 ellipsoidal capsules’ nanostructure for removal of herbicides and organic dyes

Eco-friendly and solar light-active Ti-Fe2O3 ellipsoidal capsules’ nanostructure for removal of herbicides and organic dyes

Efficient Adsorption and Removal of the Herbicide 2,4-Dichlorophenylacetic Acid from Aqueous Solutions Using MIL-88(Fe)-NH2

Photocatalytic degradation of the 2,4-dichlorophenoxyacetic acid herbicide using supported iridium materials

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Efficient Adsorption and Removal of the Herbicide 2,4-Dichlorophenylacetic Acid from Aqueous Solutions Using MIL-88(Fe)-NH₂