Green, novel, and one-step synthesis of silver oxide nanoparticles: antimicrobial activity, synergism with antibiotics, and cytotoxic studies

López-Carrizales, Montserrat; Pérez-Díaz, Mario Alberto; Mendoza‐Mendoza, Esmeralda; Peralta-Rodríguez, Rene; Ojeda-Galván, Hiram Joazet; Perez, Diana  P. Portales; Magaña-Aquino, Martín; Sánchez-Sánchez, Roberto; Martínez-Gutiérrez, Fidel

doi:10.1039/d2nj02902b

Cited by 7 publications

(2 citation statements)

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“…There are several tools and techniques to identify the characteristics of synthesized ZnO-NPs. These techniques are necessary and specifically used to distinguish the ZnO-NPs accordingly to their appearance, size, distribution, shape, morphology, specific surface area, and all the measurements related to physicochemical property evaluation [80]. Here, we are going to discuss the most common and important tools and techniques used in the characterizations of ZnO-NPs.…”

Section: Common Tools and Techniques For Characterizationmentioning

confidence: 99%

Zinc Oxide Nanoparticles: Synthesis, Characterization, Modification, and Applications in Food and Agriculture

et al. 2023

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Zinc oxide nanoparticles (ZnO-NPs) have gained significant interest in the agricultural and food industry as a means of killing or reducing the activity of microorganisms. The antibacterial properties of ZnO-NPs may improve food quality, which has a direct impact on human health. ZnO-NPs are one of the most investigated inorganic nanoparticles and have been used in various related sectors, with the potential to rapidly gain attention and increase interest in the agriculture and food industries. In this review, we describe various methods for preparing ZnO-NPs, their characterizations, modifications, applications, antimicrobial activity, testing procedures, and effects, including bactericidal and bacteriostatic mechanisms. It is hoped that this review could provide a better understanding of the preparation and application of ZnO nanoparticles in the field of food and agriculture, and promote their development to advance the field of food and agriculture.

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Section: Common Tools and Techniques For Characterizationmentioning

confidence: 99%

Zinc Oxide Nanoparticles: Synthesis, Characterization, Modification, and Applications in Food and Agriculture

et al. 2023

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“…This effect can also be beneficial in the case of photocatalytic membranes used for the filtration of oil-in-water emulsions. Moreover, several studies show that the zeta potential of silver nanoparticles can be sufficiently negative [30][31][32][33][34], so the modification of TiO 2 nanoparticles with silver can potentially improve not only photocatalytic activity but filtration parameters as well. In addition, silver possesses disinfectant properties [35,36], which can be a further advantage, by preventing the formation of biofilms on membrane surfaces.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Photocatalytic and Filtration Performance of TiO2-Ag Composite-Coated Membrane Used for the Separation of Oil Emulsions

Fazekas,

Gyulavári,

Ágoston

et al. 2024

Separations

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Polyvinylidene fluoride (PVDF) membranes were coated with TiO2 and TiO2-Ag to enhance their efficiency for oil-in-water emulsion separation. The photocatalytic activities of the two modified membranes and their filtration performances were compared in detail. The significantly enhanced photocatalytic activity of the TiO2-Ag composite was proved using a methyl orange (MO) solution (c = 10−5 M) and a crude oil emulsion (c = 50 mg·L−1). The TiO2-Ag-coated membrane reduced the MO concentration by 87%, whereas the TiO2-modified membrane reached only a 46% decomposition. The photocatalytic reduction in the chemical oxygen demand of the emulsion was also ~50% higher using the TiO2-Ag-coated membrane compared to that of the TiO2-coated membrane. The photoluminescence measurements demonstrated a reduced electron/hole recombination, achieved by the Ag nanoparticle addition (TiO2-Ag), which also explained the enhanced photocatalytic activity. A significant improvement in the oil separation performance with the TiO2-Ag-coated membrane was also demonstrated: a substantial increase in the flux and flux recovery ratio (up to 92.4%) was achieved, together with a notable reduction in the flux decay ratio and the irreversible filtration resistance. Furthermore, the purification efficiency was also enhanced (achieving 98.5% and 99.9% COD and turbidity reductions, respectively). Contact angle, zeta potential, scanning electron microscopy (SEM), and atomic force microscopy (AFM) measurements were carried out to explain the results. SEM and AFM images revealed that on the TiO2-Ag-coated membrane, a less aggregated, more continuous, homogeneous, and smoother nanolayer was formed due to the ~50% more negative zeta potential of the TiO2-Ag nanocomposite compared to that of the TiO2. In summary, via Ag addition, a sufficiently hydrophilic, beneficially negatively charged, and homogeneous TiO2-Ag-coated PVDF membrane surface was achieved, which resulted in the presented advantageous filtration properties beyond the photocatalytic activity enhancement.

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Insights into the antibacterial and antiviral mechanisms of metal oxide nanoparticles used in food packaging

Packialakshmi,

Kang,

Jayakumar

et al. 2023

Food Packaging and Shelf Life

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Green, novel, and one-step synthesis of silver oxide nanoparticles: antimicrobial activity, synergism with antibiotics, and cytotoxic studies

Abstract: Silver oxide nanoparticles (Ag2ONPs) were synthesized by a one-step, green, and novel method. Ag2ONPs were characterized independently as well as in mixtures with common antibiotics. The antibacterial activity of Ag2ONPs...

Cited by 7 publications

References 50 publications

Zinc Oxide Nanoparticles: Synthesis, Characterization, Modification, and Applications in Food and Agriculture

Zinc Oxide Nanoparticles: Synthesis, Characterization, Modification, and Applications in Food and Agriculture

Enhanced Photocatalytic and Filtration Performance of TiO2-Ag Composite-Coated Membrane Used for the Separation of Oil Emulsions

Insights into the antibacterial and antiviral mechanisms of metal oxide nanoparticles used in food packaging

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