Calcium alginate gels-functionalized polyurethane foam decorated with silver nanoparticles as an antibacterial agent for point-of-use water disinfection

Xu, Mengmeng; Luo, Huayong; Rong, Hongwei; Wu, Shuhan; Zheng, Zexin; Chen, Boyuan

doi:10.1016/j.ijbiomac.2023.123289

Cited by 18 publications

(8 citation statements)

References 37 publications

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“…For instance, calcium alginate functionalized sponges reduced E. coli growth rate significantly during 72 h of growth period and used for water disinfection . Our study confirms that sponges’ cell retention was inactivated at the time of reaction.…”

Section: Resultssupporting

confidence: 76%

High-Efficiency Photodynamic Control of Antibiotic-Resistant Bacteria and Antibiotic-Resistant Genes in Wastewater Using Hydrogel-Decorated Porous Polyurethane Sponges with Metal Nanoparticles

Manoharan

Mohandoss

Ishaque

et al. 2023

ACS Appl. Polym. Mater.

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The overuse and misuse of antibiotics in hospitals and other healthcare settings can lead to the development and spread of multidrug resistance (MDR) bacteria and water contaminants. In this study, silver nanoparticles (AgNPs)-loaded chitosan (CS)-alginate (AA) hydrogels were prepared to control wastewater MDR bacterial contaminants. CS-AA/AgNP composites strongly inhibited a wastewater MDR Enterobacter tabaci biofilm on membrane surfaces. The effect of AgNP-loaded CS-AA composite hydrogels on the gelation time, swelling ratio, in vitro degradation, and in vitro release properties was investigated. Furthermore, due to their outstanding environmentally friendly superhydrophobicity/superoleophilicity, sponges have proven compelling advantages in the area of water contaminants. Therefore, CS-AA/AgNP composites were coated on polyurethane sponges (PUSs) for disinfection applications in wastewater. CS-AA/AgNP composites and CS-AA/AgNP-coated (5 wt %) PUS exhibited higher photodynamic inactivation (PDI) of E. tabaci under blue LED light. In particular, modified PUS exhibited almost complete inactivation (5.1 log cfu/mL) at 40 min. Furthermore, tetracycline antibiotic degradation efficiency was observed to be 72.91% when the modified PUSs were added to antibiotic-polluted water in the designed reactor. In correlation with the degradation of resistance bacteria and antibiotics, the modified PUS in the designed reactor with PDI effect completely degraded tetracycline antibiotic resistance genes (ARGs) tetA and tetB at 45 min and 60 min, respectively. Specifically, PDI action on the modified PUS effectively degraded ARGs such as sul1, tetA, and tetB by 4.2, 3.2, and 2.9 log reduction (copies/mL), respectively. Excellent removal of ARGs after blue LED treatment indicated that the release of MDR pathogens and free ARGs was effectively controlled by the modified PUS photodynamic reaction. Therefore, the modified PUS can be considered as an alternative approach to remove MDR bacteria and free ARGs in the large-scale photodynamic disinfection process.

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Section: Resultssupporting

confidence: 76%

High-Efficiency Photodynamic Control of Antibiotic-Resistant Bacteria and Antibiotic-Resistant Genes in Wastewater Using Hydrogel-Decorated Porous Polyurethane Sponges with Metal Nanoparticles

Manoharan

Mohandoss

Ishaque

et al. 2023

ACS Appl. Polym. Mater.

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“…High-quality metal nanoparticles (e.g., Au, Ag, Pt, and others) have gained extensive research in diverse biomedical domains, e.g., anticancer therapy, radiotherapy augmentation, drug delivery, antibacterial treatments, diagnostic assays, antifungal treatments, bioimaging, biosensing, gene delivery, and numerous others [ 1 , 2 , 3 ]. When concerning silver nanoparticles, they are utilized in composites [ 4 , 5 ], ceramics, polymers, agriculture, and energy [ 6 ]. Several methods have been employed to synthesize nanoparticles, including the chemical process, physical process, biological process, thermal decomposition [ 7 ], heat-induced evaporation, and laser ablation [ 8 ].…”

Section: Introductionmentioning

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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“…The NCs combine various transition metals and display broad-spectrum bacteria susceptibility. 61 AgNPs decorated CA/PUF-Ag composites have potent antibacterial efficacy compared with pure polyurethane (PUF) and calcium alginate (CA)/ PUF. AgNPs release Ag + ions that interact with ATP production, DNA replication, and increase ROS generation, which interfere with internal substances and destroy the cell membrane of E. coli.…”

Section: Effect Of Ag-cuo Ncs On Growth Rate Of Pathogenic Microorganismmentioning

confidence: 99%

Green synthesized AgNPs, CuONPs, and Ag‐CuO NCs to effective antibiofilm activities and their potential application in aquaculture

Manikandan,

Arumugam,

Abdul

et al. 2023

Applied Organom Chemis

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The expanded emergence of drug‐resistant microbes remains a concern to the scientific community in developing effective therapeutics. Approach of green chemistry based nanomaterials fabrication is in high demand, due to biocompatibility, non‐toxic, and high surface area that adheres more biomolecules on surface. Green fabricated silver nanoparticles (AgNPs), copper oxide nanoparticles (CuONPs), and silver–copper oxide nanocomposites (Ag‐CuO NCs) were characterized by fluorescence and Raman spectroscopy, field emission scanning electron microscopy (FE‐SEM) with energy‐dispersive X‐ray spectroscopy (EDX), and thermogravimetric (TG)/differential scanning calorimetry (DSC) analysis. Antibiofilm potential of green fabricated AgNPs, CuONPs, and Ag‐CuO NCs was tested against aquatic pathogenic microorganisms such as Aeromonas hydrophila, Pseudomonas aeruginosa, and Staphylococcus aureus. This present study deals with bacterial growth rate, biofilm inhibition, and antibiofilm architecture of AgNPs, CuONPs, and Ag‐CuO NCs under the visualization of confocal laser scanning electron microscopy (CLSM). The FE‐SEM technique was used to observe dense and compact structure (control without NPs treatment) with treatment of NPs that showed reduced amount of cell population in A. hydrophila, P. aeruginosa, and S. aureus. The effective antibiofilm inhibition of Ag‐CuO NCs was achieved by reducing micro‐colonies compared with AgNPs and CuONPs. The AgNPs, CuONPs, and Ag‐CuO NCs demonstrated antibiofilm properties against Gram‐negative and Gram‐positive bacteria, indicating a combinatorial effect of green fabricated NPs in combination with plant metabolites against pathogenic bacteria. As a result, aforementioned nano‐product merits further investigation in order to be used as a potent adjuvant therapy as antagonistic toward various bacterial diseases in aquaculture.

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Calcium alginate gels-functionalized polyurethane foam decorated with silver nanoparticles as an antibacterial agent for point-of-use water disinfection

Cited by 18 publications

References 37 publications

High-Efficiency Photodynamic Control of Antibiotic-Resistant Bacteria and Antibiotic-Resistant Genes in Wastewater Using Hydrogel-Decorated Porous Polyurethane Sponges with Metal Nanoparticles

High-Efficiency Photodynamic Control of Antibiotic-Resistant Bacteria and Antibiotic-Resistant Genes in Wastewater Using Hydrogel-Decorated Porous Polyurethane Sponges with Metal Nanoparticles

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

Green synthesized AgNPs, CuONPs, and Ag‐CuO NCs to effective antibiofilm activities and their potential application in aquaculture

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