Fe3O4-alginate nanocomposite hydrogel beads material: One-pot preparation, release kinetics and antibacterial activity

Abdelkrim, Soumia; Mokhtar, Adel; Sardi, Amina; Boukoussa, Bouhadjar; Djelad, Amal; Zaoui, Farouk; Abdelkader, Bengueddach; Sassi, Mohamed

doi:10.1016/j.ijbiomac.2019.12.211

Cited by 70 publications

(16 citation statements)

References 75 publications

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“…Beyond 220°C, a big step of mass loss was observed. This mass loss from 220°C to 275°C corresponds to the depolymerization of the dendrimer matrix and the several degradation stages of the organic moieties 58 . At temperatures higher than 260°C, there is no loss of mass due to the formation of a solid stable (carbonized/carbonaceous matter) and the generation of several by‐products such as citraconic anhydride, trans‐aconitic acid, itaconic acid, carbon dioxane, allyl alcohol, and carbon monoxide 39,59 …”

Section: Resultsmentioning

confidence: 99%

“…This mass loss from 220 C to 275 C corresponds to the depolymerization of the dendrimer matrix and the several degradation stages of the organic moieties. 58 At temperatures higher than 260 C, there is no loss of mass due to the formation of a solid stable (carbonized/carbonaceous matter) and the generation of several by-products such as citraconic anhydride, trans-aconitic acid, itaconic acid, carbon dioxane, allyl alcohol, and carbon monoxide. 39,59 Another fundamental observation can be seen from the figure, based on these obtained results, it is clear that the Cu content was as follows 20% and 6% for the DG3-Cu-Clas and DG3-Cu-US composites, respectively.…”

Section: Thermal Propertiesmentioning

confidence: 99%

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Classical and ultrasonic preparation of new dendrimer–Copper nanocomposites: Application in the catalytic reduction, antioxidant, and antimicrobial activities

Zaoui

Daouadji

Beldjilali

et al. 2023

Applied Organom Chemis

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A new dendrimer based on citric acid and sebacoyl chloride was synthesized by Steglich esterification. The obtained dendrimer was used as a matrix for the dispersion of copper nanoparticles using classical and ultrasound methods. All materials were characterized by FTIR, 1H NMR, thermogravimetric analysis, X-ray photoelectron spectrometry, scanning electron microscopy, and energ-ydispersive -X-ray spectroscopy. The obtained nanocomposites were tested against two Gram-positive pathogenic bacteria (Bacillus cereus and Staphylococcus aureus), two Gram negative (Escherichia coli and Pseudomonas aeruginosa), the organic dye methylene blue, and in the 1,1-diphenyl-2-picrylhydrazile radical scavenging assay. A comparative study between both methods in structural, morphological, and thermal properties as well as in the antimicrobial, antioxidant, and catalytic reduction activities was provided. All nanocomposites showed an excellent activity for all applications. The comparison between both synthesis methods shows the superiority of the sonication methods, especially via the catalytic reduction and the antioxidant activities, the classic method allows better thermal stability and a higher metal content with some cationic oxidation state in the obtained nanocomposites, but ultrasound allows a better dispersion with a fully reduced metal.

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Section: Resultsmentioning

confidence: 99%

Section: Thermal Propertiesmentioning

confidence: 99%

Classical and ultrasonic preparation of new dendrimer–Copper nanocomposites: Application in the catalytic reduction, antioxidant, and antimicrobial activities

Zaoui

Daouadji

Beldjilali

et al. 2023

Applied Organom Chemis

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“…As shown in Figure 2 c, the white synthesized particles CPAM-Dia/SA-La are spherical with a diameter of about 1.5 mm, and their surfaces are in the shape of a “cauliflower” ( Figure 2 d) which is composed of irregular grooves and reticulated folds of varying depths. This structure was extremely conducive to absorbing pollutants [ 32 , 33 ].…”

Section: Resultsmentioning

confidence: 99%

Preparation and Superstrong Adsorption of a Novel La(Ⅲ)-Crosslinked Alginate/Modified Diatomite Macroparticle Composite for Anionic Dyes Removal from Aqueous Solutions

Zhao

2022

Gels

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In order to solve the problem of dye pollution of the water environment, a green macroparticle composite (CPAM-Dia/SA-La) as a bioadsorbent was prepared through a sodium alginate (SA) reaction with a polyacrylamide (CPAM)-modified diatomite (Dia) and further La(III) ion crosslinking polymerization, and characterized by various analytical methods. The important preparation and adsorption conditions of the composite were explored by the adsorption of Acid blue 113 (AB 113) and Congo red (CR) dyes. The dye adsorption efficiency was evaluated. The results show that CPAM-Dia/SA-La composite prepared under the optimized conditions displays superstrong adsorption capacities of 2907 and 1578 mg/g for AB 113 and CR and almost 100% removal efficiency within 60 min adsorption time at pH 2.0 and 298 K, and they decrease slightly with the pH increase to 10. The fitting of equilibrium data to the Langmuir model is the best and the adsorption kinetic processes can be expressed by the Pseudo-second-order kinetic model. The adsorption processes are both spontaneous and exothermic. The analysis results of FT−IR and XPS revealed that the superstrong adsorption of CPAM-Dia/SA-La for dyes. The composite adsorbed by the dye can be recycled. CPAM-Dia/SA-La is a promising biosorbent for dye wastewater treatment.

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“…In the literature, different drugs encapsulated different magnetic polymeric systems were applied for controlled drug systems. When these literature data are examined, it was seen that Fe3O4 was generally chosen to form composites with polymeric structures (Supramaniam et al, 2018, Pooresmaeil et al, 2020, Soumia et al, 2020. In this case, it is thought that the CoFe2O4 magnetic particles presented in this study will contribute to the literature.…”

Section: Release Experiments and Release Kinetics Of 5-fu Encapsulate...mentioning

confidence: 92%

An application of CoFe2O4/alginate magnetic beads: drug delivery system of 5-fluorouracil

YILDIRIM

Doğaç

2022

International Journal of Secondary Metabolite

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Magnetic hyperthermia therapy is expected to play an important role in the treatment of more and more cancers. The synergistic effects of using together hyperthermia and cancer drugs have been shown by literature studies to be more effective than either hyperthermia treatment alone or chemotherapy alone. In addition, magnetic materials that can be used as a contrast agent enable magnetic resonance imaging of the tumor, which is also useful in seeing the treatment progress. This study, which was designed for this purpose, occurred in three parts: In the first part, magnetic CoFe2O4/alginate composite beads were prepared and characterized with thermogravimetric analysis (TGA) and scanning electron microscope (SEM). In the second part, the swelling behaviour of magnetic composite beads was investigated at pH 1.2, pH 7.4 and pH 6.8. It was seen that at pH 7.4 and pH 6.8, that is, near neutral pH, CFA swelled by 81.54% and 82.69%, respectively. In the third part, 5-Fluorouracil was encapsulated at the different ratios in CoFe2O4/alginate composite beads, and release experiments were performed at pH 1.2, pH 7.4 and pH 6.8. 5-FU release was calculated with Korsmeyer-Peppas, Higuchi, first-order, and zero-order models. It was seen that the drug release systems prepared were suitable for all kinetic models. Magnetic CoFe2O4/alginate composite bead, which is the drug carrier, was determined to be suitable for controlled release for 5-Fluorouracil.

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Fe3O4-alginate nanocomposite hydrogel beads material: One-pot preparation, release kinetics and antibacterial activity

Cited by 70 publications

References 75 publications

Classical and ultrasonic preparation of new dendrimer–Copper nanocomposites: Application in the catalytic reduction, antioxidant, and antimicrobial activities

Classical and ultrasonic preparation of new dendrimer–Copper nanocomposites: Application in the catalytic reduction, antioxidant, and antimicrobial activities

Preparation and Superstrong Adsorption of a Novel La(Ⅲ)-Crosslinked Alginate/Modified Diatomite Macroparticle Composite for Anionic Dyes Removal from Aqueous Solutions

An application of CoFe2O4/alginate magnetic beads: drug delivery system of 5-fluorouracil

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