Enhancement of adsorption capacity of low cost mesoporous MCM-41 and their antibacterial and antifungal activities

Bouchikhi, Noria; Adjdir, Mehdi; Bendeddouche, Kamel C; Bouazza, Djamila; Mokhtar, Adel; Bennabi, Farid; Tabti, Hadja Alia; Sehmi, Abdelghani; Miloudi, Hafida

doi:10.1088/2053-1591/ab5dda

Cited by 12 publications

(9 citation statements)

References 37 publications

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“…According to Mishra et al [39,40], layered double hydroxide has previously given negative results in the antibacterial test against Gram-positive and Gram-negative bacteria. The same results were obtained in the case of zeolites, magadiite [41], MCM-41 [42], and clays in their normal state without any modification or incorporation of metals during their synthesis [43,44]. However, Zahraoui et al [27] reported the synthesis of Cu-magadiite with different counter ions of copper; the result materials applied as antibacterial agents, it gives great results against both grams positive and gram-negative bacteria.…”

Section: The Antibacterial Activity Of Mg-cu-al-ldhssupporting

confidence: 54%

Facile synthesis of Cu-LDH with different Cu/Al molar ratios: application as antibacterial inhibitors

et al. 2020

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A range of Cu-LDHs has been synthesized by co-precipitation using metal nitrate precursors and sodium carbonate under varying molar ratios Cu/Al (Cu 0.05 -Al 0.15 , Cu 0.10 -Al 0.10 , Cu 0.14 -Al 0.06 , and Cu 0.15 -Al 0.05 ). The uncalcined and calcined Cu-LDHs were characterized by powder X-ray diffraction and N 2 adsorption-desorption. The uncalcined solids showed clear hydrotalcite-like crystalline phases having a particle measurement between 5 and 16 nm. The best structure is attributed to the sample Cu 0.05 -Al 0.15 -LDHs. The particular surface areas are ranging between 40 and 92 m 2 /g, while the calcined samples showed the formation of Cu and Mg oxides. The antibacterial activity of Cu-LDHs with various molar ratios Cu/Al and their calcined phases were estimated towards multiple types of bacteria (Escherichia coli, Pseudomonas aeruginosa, Enterococcus faecalis, Staphylococcus aureus, and Bacillus Subtilis). The Cu 0.10 -Al 0.10 -LDHs sample shows high activity against all types of bacteria either for calcined or uncalcined materials. The obtained results of the application of Cu-LDHs antibacterial inhibitors seem to be quite promising material in the antibacterial fields.

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Section: The Antibacterial Activity Of Mg-cu-al-ldhssupporting

confidence: 54%

Facile synthesis of Cu-LDH with different Cu/Al molar ratios: application as antibacterial inhibitors

et al. 2020

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“…MCM-41 has been used in many applications in the fields of catalysis, adsorption, separation, chromatography, and others. Moreover, MCM-41 and its modified products exhibited a broad-spectrum capacity to adsorb many types of adsorbates, such as metal ions, dyes, gases, and drugs [16][17][18][19]. In addition, as-synthesized and modified MCM-41 exhibited good adsorption performance for organic compounds, particularly aromatic compounds such as benzene [20], mesitylene [21], phenol [22], toluene [23], aniline [24], and chlorophenol [25].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Rice Husk-Based MCM-41 for Removal of Aflatoxin B1 from Peanut Oil

Ren

Luo

et al. 2022

Toxins

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Edible oils, especially peanut oil, usually contain aflatoxin B1 (AFB1) at extremely high concentrations. This study focused on the synthesis of rice husk-based mesoporous silica (MCM-41) for the removal of AFB1 from peanut oil. MCM-41 was characterized by X-ray diffraction, N2 physisorption, and transmission electron microscope. MCM-41 was shown to have ordered channels with high specific surface area (1246 m2/g), pore volume (1.75 cm3/g), and pore diameter (3.11 nm). Under the optimal concentration of 1.0 mg/mL of the adsorbent dose, the adsorption behavior of MCM-41, natural montmorillonite (MONT), and commercial activated carbon (CA) for AFB1 were compared. The adsorption of AFB1 in peanut oil onto the three adsorbents was slower compared to that of AFB1 in an aqueous solution. In addition, the pseudo-second-order kinetic model better fit the adsorption kinetics of AFB1, while the adsorption mechanism followed the Langmuir adsorption isotherm on the three adsorbents. The calculated maximum adsorbed amounts of AFB1 on MONT, MCM-41, and CA were 199.41, 215.93, and 248.93 ng/mg, respectively. These results suggested that MCM-41 without modification could meet market demand and could be considered a good candidate for the removal of AFB1 from peanut oil. This study provides insights that could prove to be of economic and practical value.

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“…The FT-IR spectra of Bentonite -Na and nanocomposite A2 are displayed in Figure4. The results demonstrated that the absorption band at 3619 cm −1 is related to OH groups either of PCL blocks or to isolated Si-OH of Bentonite [34,35]. The broad absorption band ranged between 3536-3395 cm -1 is attributed to the vibrations of OH groups implied in strong interlayer hydrogen bands, Si-OH, as well as to the interlayer water molecules.…”

Section: Characterization Of Adsorbentsmentioning

confidence: 89%

“…The Langmuir isotherm model is the most widely used to present liquid -solid adsorption which assumes monolayer adsorption, Whereas, Freundlich model is empirical which assumes the heterogeneous adsorption on the surfac [51,52] . However, Temkin model assumes that the decrease in heat of absorption with recovery rate is linear rather than logarithmic [42,51,35].…”

Section: Adsorption Isotherm Studymentioning

confidence: 99%

Preparation, characterization and application of the nanocomposite PCL-PEG-PCL / Bentonite-TBHSA to the removal of methylene blue (MB) dye: Adsorption, Kinetics, and Isotherm studies

Draoua

Harrane²,

Adjdir³

2021

Preprint

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This study focuses on the synthesis, characterization, and application of amphiphilic PCL-PEG-PCL/Bentonite-TBHSA (A2). The prepared of A2 nanocomposite was prepared from Algerian Bentonite modified by the intercalation of tetrabutylammonium hydrogen sulfate (TBHSA) (A1), were characterized by different techniques including Fourier transform infrared spectroscopy (FTIR), X-ray diffraction(XRD), (TEM),(DSC) and thermogravimetric analysis (TGA ). The removal efficiency of of methylene blue, from aqueous solutions. The effects of the initial pH of a solution, contact time, and nanocomposite mass on the adsorption efficiency were investigated. Pseudo-first/second-order isotherms were applied to determine the efficiency of nanocomposite solid. The experimental data fitted well with the pseudo-second-order model for MB dye adsorption. The mass of nanocomposite increased, the adsorption capacity of dye increases to reach an optimal value at 0.13 g of adsorbent in pH = 6.8. The Langmuir isotherm exhibited the best fit, with an adsorption capacity equal to 600 mg/g .

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Enhancement of adsorption capacity of low cost mesoporous MCM-41 and their antibacterial and antifungal activities

Cited by 12 publications

References 37 publications

Facile synthesis of Cu-LDH with different Cu/Al molar ratios: application as antibacterial inhibitors

Facile synthesis of Cu-LDH with different Cu/Al molar ratios: application as antibacterial inhibitors

Synthesis of Rice Husk-Based MCM-41 for Removal of Aflatoxin B1 from Peanut Oil

Preparation, characterization and application of the nanocomposite PCL-PEG-PCL / Bentonite-TBHSA to the removal of methylene blue (MB) dye: Adsorption, Kinetics, and Isotherm studies

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