Catalytic Reduction and Antibacterial Activity of MCM-41 Modified by Silver Nanoparticles

Asli, Boubekeur; Abdelkrim, Soumia; Zahraoui, Mehdi; Mokhtar, Adel; Hachemaoui, Mohammed; Bennabi, Farid; Ahmed, Abderrazzak Baba; Sardi, Amina; Boukoussa, Bouhadjar

doi:10.1007/s12633-022-01963-6

Cited by 14 publications

(4 citation statements)

References 62 publications

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“…In addition, the absorbance spectrum of the dyes was significantly reduced. These observations suggest that the degradation of dyes with sodium borohydride is thermodynamically favorable but not kinetically [ 72 , 73 ]. In this system, silver nanostructures act as a catalyst that increases the reduction/oxidation reaction of dyes with sodium borohydride [ 74 , 75 ].…”

Section: Resultsmentioning

confidence: 99%

Green Synthesis of Controlled Shape Silver Nanostructures and Their Peroxidase, Catalytic Degradation, and Antibacterial Activity

Shafiq

Deshmukh

AbouAitah

et al. 2023

JFB

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Nanoparticles with unique shapes have garnered significant interest due to their enhanced surface area-to-volume ratio, leading to improved potential compared to their spherical counterparts. The present study focuses on a biological approach to producing different silver nanostructures employing Moringa oleifera leaf extract. Phytoextract provides metabolites, serving as reducing and stabilizing agents in the reaction. Two different silver nanostructures, dendritic (AgNDs) and spherical (AgNPs), were successfully formed by adjusting the phytoextract concentration with and without copper ions in the reaction system, resulting in particle sizes of ~300 ± 30 nm (AgNDs) and ~100 ± 30 nm (AgNPs). These nanostructures were characterized by several techniques to ascertain their physicochemical properties; the surface was distinguished by functional groups related to polyphenols due to plant extract that led to critical controlling of the shape of nanoparticles. Nanostructures performance was assessed in terms of peroxidase-like activity, catalytic behavior for dye degradation, and antibacterial activity. Spectroscopic analysis revealed that AgNDs demonstrated significantly higher peroxidase activity compared to AgNPs when evaluated using chromogenic reagent 3,3′,5,5′-tetramethylbenzidine. Furthermore, AgNDs exhibited enhanced catalytic degradation activities, achieving degradation percentages of 92.2% and 91.0% for methyl orange and methylene blue dyes, respectively, compared to 66.6% and 58.0% for AgNPs. Additionally, AgNDs exhibited superior antibacterial properties against Gram-negative E. coli compared to Gram-positive S. aureus, as evidenced by the calculated zone of inhibition. These findings highlight the potential of the green synthesis method in generating novel nanoparticle morphologies, such as dendritic shape, compared with the traditionally synthesized spherical shape of silver nanostructures. The synthesis of such unique nanostructures holds promise for various applications and further investigations in diverse sectors, including chemical and biomedical fields.

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Section: Resultsmentioning

confidence: 99%

Green Synthesis of Controlled Shape Silver Nanostructures and Their Peroxidase, Catalytic Degradation, and Antibacterial Activity

Shafiq

Deshmukh

AbouAitah

et al. 2023

JFB

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“…The disruption of these vital cellular processes ultimately leads to bacterial destruction and inhibits its survival. 56,57…”

Section: Resultsmentioning

confidence: 99%

“…The disruption of these vital cellular processes ultimately leads to bacterial destruction and inhibits its survival. 56,57 To better assess the antibacterial activity of the materials used, Table 3 groups together the antibacterial activity against S.aureus and E. Coli of a number of materials, as shown in the table below. The Ag@MCM-41 shows good antibacterial performance in comparison with the reported materials, this can be attributed to the porous structure of Ag@MCM-41 that can promote better contact with bacterial cells, increasing the chances of silver nanoparticles interacting with bacteria, thus improving antibacterial performance.…”

Section: Antibacterial Studymentioning

confidence: 99%

Petroleum sludge ash-derived MCM-41-silver nanocomposites for enhanced photocatalysis and antimicrobial effect in water treatment

Goual,

Alaoui,

Bendraoua

et al. 2023

New J. Chem.

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“…One of the most efficient agglomeration solutions with the least cost is synthesizing nanoparticles based on clay compounds as the support material. The nanoparticles are maintained within the interlamellar spaces of clay and on its external surfaces. − …”

Section: Introductionmentioning

confidence: 99%

Kaolin-Supported Silver Nanoparticles as an Effective Catalyst for the Removal of Methylene Blue Dye from Aqueous Solutions

et al. 2022

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Water contamination by organic dyes has become a reason for severe environmental pollution and has been threatening the aquatic ecosystem. In this study, kaolin-supported silver nanoparticle (Ag-NP) composites were synthesized by a facile two-step adsorption−reduction method through the reduction of silver ions adsorbed onto locally available, inexpensive, and easily pretreated kaolin surfaces by using sodium borohydride (NaBH 4 ) for the catalytic degradation of methylene blue (MB) dye in aqueous solution. The morphology, structure, surface area, and interaction of the synthesized materials were investigated by scanning electron microscopy, X-ray diffraction, Brunauer− Emmett−Teller, and Fourier transform infrared spectroscopy, respectively. Characterization results showed the successful growth of Ag-NPs on the kaolin surface. To understand the catalytic degradation performance of the catalyst, batch experiments were carried out using MB dye as a model dye. The catalytic reduction tests confirmed the importance of Ag-NPs and the high catalytic activities of the synthesized Ag-NPs/kaolin composite toward MB dye reduction. The degradation results indicated that the increased Ag-NP content on the kaolin surface through repeating cycles could effectively enhance the removal of MB dye from an aqueous solution. The kinetic analysis of the MB dye degradation of the catalyst has fitted the pseudo-first-order kinetic model. More than 97% removal efficiency was still present after five reuse cycles, demonstrating exceptional stability and reusability of the composite. In conclusion, the Ag-NPs supported kaolin (Ag-NPs/kaolin) composite was found to be a promising catalyst for the excellent catalytic activity to reduce a model dye MB from the aqueous solution in the presence of NaBH 4 with catalytic efficiency higher than 97% and a reduction rate constant, k red , higher than 0.86 min −1 .

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Catalytic Reduction and Antibacterial Activity of MCM-41 Modified by Silver Nanoparticles

Cited by 14 publications

References 62 publications

Green Synthesis of Controlled Shape Silver Nanostructures and Their Peroxidase, Catalytic Degradation, and Antibacterial Activity

Green Synthesis of Controlled Shape Silver Nanostructures and Their Peroxidase, Catalytic Degradation, and Antibacterial Activity

Petroleum sludge ash-derived MCM-41-silver nanocomposites for enhanced photocatalysis and antimicrobial effect in water treatment

Kaolin-Supported Silver Nanoparticles as an Effective Catalyst for the Removal of Methylene Blue Dye from Aqueous Solutions

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