Mechanism and behavior of silver nanoparticles in aqueous medium as adsorbent

Dastafkan, Kamran; Khajeh, Mostafa; Bohlooli, Mousa; Ghaffari‐Moghaddam, Mansour

doi:10.1016/j.talanta.2015.03.065

Cited by 23 publications

(10 citation statements)

References 123 publications

(149 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Our results showed that the addition of complex organic matter to the environment led to a better stability for some of the tested AgNPs-even at a high ionic strength-possibly due to an extra sterical NP hindrance [62][63][64][65][66]. Moreover, we proved that the stability was size-dependent, attributed to the difference in curvature or surface area of small versus larger AgNPs [2,18,50,[67][68][69][70]. Finally, the stabilization mechanism of the AgNPs was important.…”

Section: Discussionmentioning

confidence: 59%

“…We believe that the difference in MNP stability within these different environments is at least partly responsible for the observed toxicity differences. NPs are characterized by a large surface-to-volume ratio due to their smaller size-order in comparison to the bulk material [2,18,70]. When NPs aggregate, the external and reactive surface area is decreasing and, therefore, the reactivity, bioavailability and toxicity changes [4,8,31,50].…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Revealing the Importance of Aging, Environment, Size and Stabilization Mechanisms on the Stability of Metal Nanoparticles: A Case Study for Silver Nanoparticles in a Minimally Defined and Complex Undefined Bacterial Growth Medium

Leersnyder

Gelder

Driessche³

et al. 2019

Nanomaterials

View full text Add to dashboard Cite

Although the production and stabilization of metal nanoparticles (MNPs) is well understood, the behavior of these MNPs (possible aggregation or disaggregation) when they are intentionally or unintentionally exposed to different environments is a factor that continues to be underrated or overlooked. A case study is performed to analyze the stability of silver nanoparticles (AgNPs)—one of the most frequently used MNPs with excellent antibacterial properties—within two bacterial growth media: a minimally defined medium (IDL) and an undefined complex medium (LB). Moreover, the effect of aging, size and stabilization mechanisms is considered. Results clearly indicate a strong aggregation when AgNPs are dispersed in IDL. Regarding LB, the 100 nm electrosterically stabilized AgNPs remain stable while all others aggregate. Moreover, a serious aging effect is observed for the 10 nm electrostatically stabilized AgNPs when added to LB: after aggregation a restabilization effect occurs over time. Generally, this study demonstrates that the aging, medium composition (environment), size and stabilization mechanism—rarely acknowledged as important factors in nanotoxicity studies—have a profound impact on the AgNPs stabilization and should gain more attention in scientific research.

show abstract

Section: Discussionmentioning

confidence: 59%

Section: Discussionmentioning

confidence: 99%

Revealing the Importance of Aging, Environment, Size and Stabilization Mechanisms on the Stability of Metal Nanoparticles: A Case Study for Silver Nanoparticles in a Minimally Defined and Complex Undefined Bacterial Growth Medium

Leersnyder

Gelder

Driessche³

et al. 2019

Nanomaterials

View full text Add to dashboard Cite

show abstract

“…It is also worth mentioning that the AgNP-based treatment of human cell cultures may induce cytotoxicity [ 67 ], inflammatory responses in a cell-type-dependent manner, and genotoxicity [ 66 ]. Thanks to their intrinsic capacity to provide stimuli-dependent responses through the specific modification of their optical properties, chemical environments, high molar absorptivity [ 68 ], and the many sorption sites found on their extensive surface [ 69 ], AgNPs are also used in various analytical applications. There are manifold research studies which particularly describe the biocide activity of silver itself [ 70 ].…”

Section: Antibacterial Characteristics Of Silver Nanoparticlesmentioning

confidence: 99%

Biomedical Applications of Silver Nanoparticles: An Up-to-Date Overview

et al. 2018

View full text Add to dashboard Cite

During the past few years, silver nanoparticles (AgNPs) became one of the most investigated and explored nanotechnology-derived nanostructures, given the fact that nanosilver-based materials proved to have interesting, challenging, and promising characteristics suitable for various biomedical applications. Among modern biomedical potential of AgNPs, tremendous interest is oriented toward the therapeutically enhanced personalized healthcare practice. AgNPs proved to have genuine features and impressive potential for the development of novel antimicrobial agents, drug-delivery formulations, detection and diagnosis platforms, biomaterial and medical device coatings, tissue restoration and regeneration materials, complex healthcare condition strategies, and performance-enhanced therapeutic alternatives. Given the impressive biomedical-related potential applications of AgNPs, impressive efforts were undertaken on understanding the intricate mechanisms of their biological interactions and possible toxic effects. Within this review, we focused on the latest data regarding the biomedical use of AgNP-based nanostructures, including aspects related to their potential toxicity, unique physiochemical properties, and biofunctional behaviors, discussing herein the intrinsic anti-inflammatory, antibacterial, antiviral, and antifungal activities of silver-based nanostructures.

show abstract

“…In addition, an increase in the distribution of active sites on Ag nanostructured surface might happen because of lack of internal diffusion resistance that lead to high adsorptive capacity [55]. Furthermore, arsenic ions species could be adsorbed on TiO2 because adsorption onto TiO2 played an important role during the photocatalytic reactions [65].…”

Section: Probing Removal Of As (Iii) and As (V) Via Ccdmentioning

confidence: 99%

Adsorption and Photocatalytic Removal of Arsenic from Water by a Porous and Magnetic Nanocomposite: Ag/TiO2/Fe3O4@GO

Miranzadeh

Afshari²,

Khataei

et al. 2020

Adv. J. Chem. A

View full text Add to dashboard Cite

As (III) regularly requires oxidation to As (V), before it can be removed from water. Here, we reported photocatalytic removal of As (III) as well as adsorption of As (III) and As (V) using a novel, porous magnetic Ag/TiO2/Fe3O4@GO nanocomposite which was characterized via FT-IR, XRD, SEM, and TEM. A mathematical model (the central composite design) was used to estimate the relationship between the observed adsorption and our set of variables including initial concentration of arsenic ions, adsorbent dosage, pH, and the contact time. An optimum adsorption capacity of about 91% was observed for As (III) using 20 mg adsorbent with 24 ppm initial concentration of As (III), at pH = 5, within 90 min, and room temperature. Likewise, an optimum adsorption capacity of about 87% was observed for As (V) using 11 mg adsorbent with 17 ppm initial concentration of As (V), at pH = 3, within 30 min, and room temperature. The electrostatic factors between surface charge of nanocomposite and arsenic species were used to explain adsorption behavior of As (III) and As (V) at different conditions. The Langmuir isotherm equations best interpreted the nature of adsorption of As (III) and A (V). It was found during phocatalytic process maximum R% was about 63% for As (III) using 40 mg photocatalyst. Arsenic Adsorption Photocatalyst Magnetic nanocomposite Ag nanoparticles M. Miranzadeh et al.

show abstract

Mechanism and behavior of silver nanoparticles in aqueous medium as adsorbent

Cited by 23 publications

References 123 publications

Revealing the Importance of Aging, Environment, Size and Stabilization Mechanisms on the Stability of Metal Nanoparticles: A Case Study for Silver Nanoparticles in a Minimally Defined and Complex Undefined Bacterial Growth Medium

Revealing the Importance of Aging, Environment, Size and Stabilization Mechanisms on the Stability of Metal Nanoparticles: A Case Study for Silver Nanoparticles in a Minimally Defined and Complex Undefined Bacterial Growth Medium

Biomedical Applications of Silver Nanoparticles: An Up-to-Date Overview

Adsorption and Photocatalytic Removal of Arsenic from Water by a Porous and Magnetic Nanocomposite: Ag/TiO2/Fe3O4@GO

Contact Info

Product

Resources

About