Titanium and iron-modified delaminated muscovite as photocatalyst for enhanced degradation of Tetrabromobisphenol A by visible light

Touaa, Nesrine; Bouberka, Zohra; Gherdaoui, Chems Eddine; Supiot, Philippe; Roussel, Pascal; Pierlot, Christel; Maschke, Ulrich

doi:10.1142/s179360472051008x

Cited by 15 publications

(4 citation statements)

References 55 publications

(49 reference statements)

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“…39 The hydroxyls break the bonds between tetrahedral silicon and octahedral aluminum and in turn disrupt the layered structure. 40 In a word, only 4.94% of mass loss is achieved during the whole heating process, indicating that pyrite waste possesses good thermal stability.…”

Section: Resultsmentioning

confidence: 99%

An excellent sensible heat storage and photothermal conversion pyrite waste material for pollutant removal

et al. 2023

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Section: Resultsmentioning

confidence: 99%

An excellent sensible heat storage and photothermal conversion pyrite waste material for pollutant removal

et al. 2023

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“…The inflection points of the isotherms are not well defined, indicating that in the beginning, the formation of mono-and multilayers occurred on the surface of the adsorbent [46]. A H3 hysteresis loop corresponds to a solid consisting of agglomerate particles with a small amount of micropores with non-uniform size or shape of slit-shaped pores [47]. The specific surface area of the bentonite used in this work (S BET = 32.79 m 2 g −1 ) is lower than that of other bentonite clays: S BET = 35.70 m 2 g −1 (Jelšovy Potok (Slovakia); Andrunik et al [48]); S BET = 77m 2 g −1 (North-east of Morocco; Ouachtak et al [28]); S BET = 66.2 m 2 .g −1 (Al Azraq (Jordan); Khansaa Al-Essa [49]).…”

Section: N 2 Adsorption/desorptionmentioning

confidence: 99%

Adsorption of Orange G Dye on Hydrophobic Activated Bentonite from Aqueous Solution

et al. 2023

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This report focusses on the modification of physical structure and chemical properties of a bentonite clay from the Hammam Boughrara region of the Maghnia district in western Algeria to maximize its adsorption capacity. The purified bentonite clay (called B) was modified, either by acid activation with 1M sulfuric acid (B-Act), or by intercalation with the cationic surfactant cetytrimethyl ammonium bromide (CTAB), applying a cation exchange capacity (CEC) of 100% (called B-CTAB). Modification of B was also introduced by combining these two steps consecutively, i.e., at first acid activation of B, followed by intercalation with CTAB (B-Act-CTAB). The B-Act-CTAB was obtained by H2SO4 (1M) acid activation, followed by co-adsorption of CTAB with 100% and 300% of the CEC of B-Act as precursor. In particular, a strong increase of surface area and pore volume of the modified bentonites was observed for B-Act (469.83 m²/g and 0.401 cm3g−1), B-Act-CTAB100 (267.72 m²/g and 0.316 cm3 g−1) and B-Act-CTAB300 (111.15 m²/g and 0.171 cm3g−1), compared to B (31.79 m²/g and 0.074 cm3 g−1) and B-CTAB (3.79 m²/g and 0.034 cm3 g−1), respectively. The bentonite-based adsorbents were then used to evaluate the removal efficiency of an organic molecule, the azo dye Orange G (OG), as a model for a Persistent Organic Pollutant. Freundlich, Langmuir and Sips (Langmuir–Freundlich) models were applied to analyze equilibrium isotherms, showing a good correlation between experimental data and the Freundlich model. A good agreement was obtained between experimentally obtained kinetic adsorption data and the pseudo-second-order model, allowing to evaluate rate constants. B-Act-CTAB300 can be applied as a low-cost material for removal of azo dyes, since its adsorption capacity towards OG (102.80 mg/g) exceeds largely that of B-CTAB (31.49 mg/g) and B-Act-CTAB100 (12.77 mg/g).

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“…The type IV physisorption isotherm is associated with the capillary condensation that takes place in the mesopores. The isotherm exhibits limited uptake over a wide range of P/P0 and shows monolayer-multilayer adsorption features in the initial part of the curve [41]. The provided classification offers initial details regarding the characteristics of the adsorbent.…”

Section: Analysis By Betmentioning

confidence: 99%

Performance of Mg/Al and Zn/Al Hydroxide Double Lamellar-Bentonite for Removal of Anionic Azo Dye from Aqueous Solution

Bouhent,

Bentaleb,

Al-Ameri

et al. 2024

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This paper presents the preparation and characterization of bentonite coated with hydroxide double lamellar Mg/Al-bentonite and Zn/Al-bentonite as a potential adsorbent material. The coating process involved co-precipitation of mixed metal nitrate solution (Mg-Al) or (Zn-Al), followed by immersion of bentonite (B-Na+) dispersion. The structures and morphologies of the coated bentonites were characterized using XRD, FTIR, BET, and SEM analysis. The results of the BET analysis indicate that Mg/Al-bentonite and Zn/Al-bentonite have larger surface areas and pore volumes compared to bentonite alone. Specifically, the surface area of Mg/Al-bentonite is 209.25 m2/g with a pore volume of 0.423 cm3/g, while Zn/Al-bentonite has a surface area of 175.95 m2/g and a pore volume of 0.313 cm3/g. In contrast, the surface area and pore volume of bentonite alone are 110.43 m2/g and 0.132 cm3/g, respectively. The Mg/Al-bentonite reaches 85% uptake within 3 h (equivalent to 724.20 mg/g at 25 °C and pH 7), achieving rapid equilibrium. In contrast, the Zn/Al-bentonite achieves a maximum adsorption of 74% within 5 h under identical pH and temperature conditions, corresponding to 650.34 mg/g. The error function values, including the correlation coefficient R2, chi-square test χ2, and residual sum of squares RSS, were calculated to evaluate both kinetic and isotherm models. The kinetic adsorption data agreed well with a pseudo-second-order model. The adsorption process followed the Sips isotherm model, and the monolayer adsorption capacity of Mg/Al-bent and Zn/Al-bent composites was 872.41 (R2 = 0.974) and 678.45 mg/g (R2 = 0.983), respectively. The thermodynamic analysis of the adsorption process revealed that it occurred spontaneously with an endothermic characteristic. The parameters ΔS, ΔH, and ΔG were used to determine this.

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Titanium and iron-modified delaminated muscovite as photocatalyst for enhanced degradation of Tetrabromobisphenol A by visible light

Cited by 15 publications

References 55 publications

An excellent sensible heat storage and photothermal conversion pyrite waste material for pollutant removal

An excellent sensible heat storage and photothermal conversion pyrite waste material for pollutant removal

Adsorption of Orange G Dye on Hydrophobic Activated Bentonite from Aqueous Solution

Performance of Mg/Al and Zn/Al Hydroxide Double Lamellar-Bentonite for Removal of Anionic Azo Dye from Aqueous Solution

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