Enhancing the removal of organic and inorganic selenium ions using an exfoliated kaolinite/cellulose fibres nanocomposite

Abukhadra, Mostafa R.; AlHammadi, Ali A.; El-Sherbeeny, Ahmed M.; Salam, Mohamed Abdel; El-Meligy, Mohammed A.; Awwad, Emad Mahrous; Luqman, Monis

doi:10.1016/j.carbpol.2020.117163

Cited by 33 publications

(29 citation statements)

References 47 publications

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“…The effect of the modification process on the Tafla samples shows that the surface area of the prepared nanocomposite has been increased due to the opening of the platelets, which also leads to a more porous characteristic in the nanocomposite structure. 47 The surface of the prepared nanocomposite has many advantages that enhance sorption processes such as irregularity, roughness, porosity, and heterogeneity. 48 These images indicate that the particles of the prepared nanocomposite have a polygonal shape.…”

Section: Resultsmentioning

confidence: 99%

NanoTafla Nanocomposite as a Novel Low-Cost and Eco-Friendly Sorbent for Strontium and Europium Ions

et al. 2022

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Now the wide use of nanooxides is attributed to their remarkable collection of properties. Nanocomposites have an impressive variety of important applications. A thermal decomposition approach provides a more optimistic method for nanocrystal synthesis due to the low cost, high efficiency, and expectations for large-scale production. Therefore, in this study a new eco-friendly nanooxide composite with sorption characteristics for europium (Eu(III)) and strontium (Sr(II)) was synthesized by a one-step thermal treatment process using earth-abundant tafla clay as a starting material to prepare a modified tafla (M-Taf) nanocomposite. The synthesized nancomposite was characterized by different techniques before and after sorption processes. Different factors that affected the sorption behavior of Eu(III) and Sr(II) in aqueous media by the M-Taf nanocomposite were studied. The results obtained illustrated that the kinetics of sorption of Eu(III) and Sr(II) by the M-Taf nanocomposite are obeyed according to the pseudo-second order and controlled by a Langmuir isotherm model with maximum sorption capacities ( Q max ) of 25.5 and 23.36 mg/g for Eu(III) and Sr(II), respectively. Also, this novel low-cost and eco-friendly sorbent has promising properties and can be used to separate and retain some radionuclides in different applications.

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Section: Resultsmentioning

confidence: 99%

NanoTafla Nanocomposite as a Novel Low-Cost and Eco-Friendly Sorbent for Strontium and Europium Ions

et al. 2022

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“…The natural polymer which can be extracted from the bio-resources as plants (starch, chitosan, and cellulose) and animal (collagen, albumin, and gelatin) were studied extensively as natural biopolymers of signi cant medical and health applications [14,15,16]. Such polymers are of excellent biocompatibility, chemical safety, availability, reactivity, and chemical a nities for the organic structures of the drug [12,17,18]. Among such biopolymers, cellulose and chitosan attracted great attention as promising materials in several industrial and medical industries [9,19].…”

Section: Introductionmentioning

confidence: 99%

“…Cellulose is of signi cant availability as it is a valuable component in numerous green plants, agricultural wastes, and biomasses which can be extracted by facile and low-cost methods [21]. Technically, cellulosic materials are low-cost, non-toxic, stable, biocompatible, highly reactive, biodegradable, and highly heat resistant materials [17,19,22]. Additionally, it exhibits high chemical exibility to be modi ed or integrated into numerous varieties of composites either with organic or inorganic materials [17,23].…”

Section: Introductionmentioning

confidence: 99%

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Synthesis And Characterization Of Fe0@Chitosan/Cellulose Green Nanocomposite As Advanced Carrier For Ibuprofen Drug; Loading And Release Properties

Abukhadra

Kashief

Khim

et al. 2022

Preprint

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Green nanocomposite of Fe0@chitosan/cellulose (Fe0@CH/CS) was synthesized utilizing the green extract of khaya senegalensis leaves and sugarcane bagasse as cellulose precursor. The composite was evaluated as an effective carrier for ibuprofen drug (IBF) considering its release and loading properties. The Fe0@CH/CS is of significant IBF loading capacity (553 mg/g) and the loading behavior can be directed by the values of the experimental variables. The loading of IBF into Fe0@CH/CS is in agreement with the classic Langmuir isotherm (R2> 0.95) and Pseudo-first order kinetic (R2> 0.97). This displays homogenous, physisorption, and a monolayer loading of IBF into Fe0@CH/CS. Based on the findings of the Monolayer model with one energy as advanced isotherm model, the Fe0@CH/CS structure is of 252.6 mg/g active receptors density and each rector was occupied by two or three IBF ions (n=2.18) by multi-molecular mechanism. The determined IBF loading energy (4.81 kJ/mol) demonstrates the physical loading of the drug by Van-der Waals forces and/or hydrogen bonding. The Fe0@CH/CS structure is of significant release profiles as carrier for IBF which continued up to 260 h (gastric buffer) and 180 h (intestinal buffer). The studied release kinetics and the obtained diffusion exponent (0.58 (pH 1.2) and 0.48 (pH 7.4)) reflect the release of IBF from Fe0@CH/CS by complex diffusion and erosion mechanisms. The cytotoxicity tests declared the safe and biocompatible value of both Fe0@CH/CS and IBF loaded Fe0@CH/CS on the human bronchial epithelial cells.

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“…In recent years, environmental pollution has become one of the most important issues to address, especially water pollution by organic and inorganic pollutants. [1][2][3][4] After several studies, researchers have unanimously agreed that photocatalysts are promising candidates for remediating environmental pollution under direct sunlight irradiation. [5][6][7] Wide bandgap photocatalysts have been identified for the same due to the strong reduction-oxidation ability of their photoinduced electron-hole pairs.…”

Section: Introductionmentioning

confidence: 99%

Fast Scalable Synthetic Methodology to Prepare Nanoflower‐Shaped Bi/BiOCl_xBr₁₋_x Heterojunction for Efficient Immobilized Photocatalytic Reactors under Visible Light Irradiation

Alansi

Qahtan

Abass

et al. 2021

Advanced Sustainable Systems

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the photoinduced charge carriers. [8][9][10] Besides, it is highly desirable to achieve these goals using earth-abundant materials and a cost-effective, energy-efficient, and scalable preparation strategy for large-scale photocatalytic systems.Recently, bismuth oxyhalides (BiOXs, X = Cl, Br, and I) have demonstrated excellent photocatalytic activity under sunlight irradiation due to their distinct characteristics such as indirect bandgap, excellent electronic configuration, unique layered structures, high dipole moment, powerful oxidation ability, and high separation rate of photogenerated electron-hole pairs. [11][12][13][14] Despite the distinct optical and structural characteristics of BiOXs, they show some drawbacks that limit their practical application. For instance, BiOBr has a narrow bandgap energy ≈2.7-2.8 eV absorbing the visible light component of the solar spectrum; however, its photocatalytic performance is relatively poor due to its low separation rate of charge carriers and weak oxidation ability. [8,15] On the other hand, BiOCl possesses a more powerful oxidation ability but with a wide bandgap energy (≈3.3 eV), thus responding to only UV light, which represents a small percentage (≈5%) of the solar spectrum, and reducing its chance for scalable remediation of environmental pollution. [16,17] Consequently, the integration of the desired characteristics of individual BiOXs in one photocatalytic compound is an effective strategy to produce more efficient BiOXs-based photocatalytic systems. For example, alloyed compounds (i.e., solid solutions) of BiOXs which contain more than one halogen atom in the compound through changes in the molar ratios of halogen atoms such as BiOCl x Br 1−x , [18,19] BiOCl x I 1−x , [20,21] and BiOBr x I 1−x . [22,23] have the same layered atomic structure, leading to the easy arrangement of different halogen atoms into the lattice of solid solutions using a low-energy fabrication process. Based on this fact, the solid solutions strategy is one of the most effective ways to improve the photocatalytic performance of BiOXs by reaching the best balance between the visible light absorption and reduction-oxidation (redox) abilities. [19,20,23] Among the different solid solutions of BiOXs, flower-like BiOCl x Br 1−x solid solutions (i.e., engineering BiOCl by introducing different molar ratios of Br) demonstrate superior photocatalytic performance compared to their counterparts. In previous studies, BiOCl x Br 1−x solid solutions were prepared by following two typical strategies, either by introducing organic salts (cetyltrimethylammonium bromide (CTAB) and cetyltrimethylammonium chloride (CTAC)) as a source for halogen with different molar ratios using multistep methods at ambient conditions [19,24,25] or by using simple salts (KCl and KBr) as a source for halogen ions using the hydrothermal or solvothermal methods. [26][27][28] In fact, the first strategy is a lengthy process that requires expensive and complex organic materials as halogen sources and indisposable surfactants, ...

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Enhancing the removal of organic and inorganic selenium ions using an exfoliated kaolinite/cellulose fibres nanocomposite

Cited by 33 publications

References 47 publications

NanoTafla Nanocomposite as a Novel Low-Cost and Eco-Friendly Sorbent for Strontium and Europium Ions

NanoTafla Nanocomposite as a Novel Low-Cost and Eco-Friendly Sorbent for Strontium and Europium Ions

Synthesis And Characterization Of Fe0@Chitosan/Cellulose Green Nanocomposite As Advanced Carrier For Ibuprofen Drug; Loading And Release Properties

Fast Scalable Synthetic Methodology to Prepare Nanoflower‐Shaped Bi/BiOCl_xBr₁₋_x Heterojunction for Efficient Immobilized Photocatalytic Reactors under Visible Light Irradiation

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Enhancing the removal of organic and inorganic selenium ions using an exfoliated kaolinite/cellulose fibres nanocomposite

Cited by 33 publications

References 47 publications

NanoTafla Nanocomposite as a Novel Low-Cost and Eco-Friendly Sorbent for Strontium and Europium Ions

NanoTafla Nanocomposite as a Novel Low-Cost and Eco-Friendly Sorbent for Strontium and Europium Ions

Synthesis And Characterization Of Fe0@Chitosan/Cellulose Green Nanocomposite As Advanced Carrier For Ibuprofen Drug; Loading And Release Properties

Fast Scalable Synthetic Methodology to Prepare Nanoflower‐Shaped Bi/BiOClxBr1−x Heterojunction for Efficient Immobilized Photocatalytic Reactors under Visible Light Irradiation

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Fast Scalable Synthetic Methodology to Prepare Nanoflower‐Shaped Bi/BiOCl_xBr₁₋_x Heterojunction for Efficient Immobilized Photocatalytic Reactors under Visible Light Irradiation