Synthesis and Antibacterial Activity of (AgCl, Ag)NPs/Diatomite Hybrid Composite

Kubasheva, Zhanar; Sprynskyy, Myroslav; Railean-Plugaru, Viorica; Pomastowski, Paweł; Ospanova, A. K.; Buszewski, Bogusław

doi:10.3390/ma13153409

Cited by 26 publications

(22 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, the study explored a controlled release of biocidal Ag + ions from AgBr composites . Several reports outlined the effective use of AgCl NPs in biomedical, cosmetics, and food packaging applications considering antibacterial behavior. , Silver halides have the potential to be NAMs by providing a tailored concentration of biocidal Ag + ions in an aqueous medium. Nonetheless, it is known that AgX salts in pure crystalline form are unstable, whereas AgX salts in a dispersed state are considered stable …”

Section: Introductionmentioning

confidence: 99%

Green Synthesis and Characterization of Antimicrobial Synergistic AgCl/BAC Nanocolloids

Hossain

Sportelli

Picca

et al. 2022

ACS Appl. Bio Mater.

View full text Add to dashboard Cite

All over the world, one of the major challenges is the green synthesis of potential materials against antimicrobial resistance and viruses. This study demonstrates a simple method like chemistry lab titration to synthesize green, facile, scalable, reproducible, and stable synergistic silver chloride/benzyldimethylhexadecyl-ammonium chloride (AgCl/BAC) colloidal Nanoantimicrobials (NAMs). Nanocolloidal dispersions of AgCl in an aqueous medium are prepared by using silver nitrate (AgNO 3 ) as precursor and BAC as both sources of chloride and stabilizer, holding an asymmetric molecular structure. The synthetic approach is scalable and green. Both the morphology and stability of AgCl/BAC nanocolloids (NCs) were investigated as a function of different molar fractions of the reagents. AgCl/BAC NCs were characterized by transmission electron microscopy (TEM) and X-ray photoelectron and UV–vis spectroscopies. Zeta potential measurements revealed increasing positive potential values at every stage of the synthesis. Size distribution and hydrodynamic diameter of the particles were measured by dynamic light scattering (DLS), which predicted the formation of BAC layered structures associated with the AgCl nanoparticles (NPs). Small-angle X-ray scattering (SAXS) experiments verify the thickness of the BAC bilayer around AgCl. The produced AgCl/BAC NCs probably have synergistic antimicrobial properties from the AgCl core and the biocide BAC shell. AgCl/BAC NCs stability over months was investigated. The experimental evidence supports the morphological stability of the AgCl/BAC NCs, while higher positive zeta potential values anticipate a long-term antimicrobial effect: a higher surface charge causes NPs to be potentially more lethal to bacteria. AgCl/BAC antimicrobial aqueous colloidal suspensions will be used as additives for the industrial production of antimicrobial coatings.

show abstract

Section: Introductionmentioning

confidence: 99%

Green Synthesis and Characterization of Antimicrobial Synergistic AgCl/BAC Nanocolloids

Hossain

Sportelli

Picca

et al. 2022

ACS Appl. Bio Mater.

View full text Add to dashboard Cite

show abstract

“…The composite was then added with a carboxymethyl cellulose solution followed by calcination at 400 °C [21]. Besides, the researchers used chemicals such as sodium borohydride solution [22], hydrogen peroxide [23], and Tollens' reagent [24][25] to produce AgNPs. However, some of these methods are not environmentally friendly and expensive because they use high calcination temperatures and toxic reducing agents.…”

Section: ■ Introductionmentioning

confidence: 99%

A Green Method for Synthesis of Silver-Nanoparticles-Diatomite (AgNPs-D) Composite from Pineapple (<i>Ananas comosus</i>) Leaf Extract

Hamdiani

Shih

2021

Indones. J. Chem.

View full text Add to dashboard Cite

This study aims to develop a green method to load silver nanoparticles (AgNPs) into the diatomite (D) pores to produce AgNPs-D composite material. The AgNPs were synthesized by pineapple leaf extract at the temperature of 70 °C for 30 min. The composite formation was characterized by UV-Vis, FTIR, TGA, particle sizes analysis, gravimetric, and color observation. The appearance of surface plasmon bands in 440–460 nm confirms the AgNPs formation. The percentage of the AgNO3 which converted to AgNPs was 99.8%. The smallest particle size of AgNPs was 30 nm, obtained in an AgNO3 concentration of 1 mM with a stirring time of 24 h at 70 °C. The colloidal AgNPs were stable for up to 7 days. The adsorption process of AgNPs was marked by the appearance of –C=O and –C–O– groups peak at 1740 and 1366 cm–1 on the FTIR spectrum. By adsorption and gravimetric technique, as much as 1 wt.% of AgNPs were loaded into D pores. The color of diatomite material changes from white to reddish-brown. The TGA analysis showed that the remaining D and AgNPs-D at 580 °C are 98.22% and 95.74%, respectively. The AgNPs loading through the green technology technique was expected to increase diatomite application in the biomedical field.

show abstract

“…After the formation of AgCl, the excess silver nitrate follows another exchange reaction with the phosphate source leading to Ag 3 PO 4 . As the Cl content in BW7 is very low, the major phase in BW7 nanocomposites is predominantly Ag 3 PO 4 [ 54 ]. The conversion of silver salt by both brewery wastes led to incorporating higher amounts of the minor contents in the nanocomposite structure with increasing synthesis temperature and time.…”

Section: Discussionmentioning

confidence: 99%

Valorization of Brewery Wastes for the Synthesis of Silver Nanocomposites Containing Orthophosphate

et al. 2021

View full text Add to dashboard Cite

Brewery wastes from stage 5 (Wort precipitate: BW5) and stage 7 (Brewer’s spent yeast: BW7) were valorized for the synthesis of silver phosphate nanocomposites. Nanoparticles were synthesized by converting silver salt in the presence of brewery wastes at different temperatures (25, 50, and 80 °C) and times (10, 30, and 120 min). Unexpectedly, BW7 yielded Ag3PO4 nanoparticles with minor contents of AgCl and Ag metal (Agmet). Contrastingly, BW5 produced AgCl nanoparticles with minor amounts of Ag3PO4 and Agmet. Nanocomposites with different component ratios were obtained by simply varying the synthesis temperature and time. The morphology of the nanocomposites contained ball-like structures representative of Ag3PO4 and stacked layers and fused particles representing AgCl and Agmet. The capping on the nanoparticles contained organic groups from the brewery by-products, and the surface overlayer had a rich chemical composition. The organic overlayers on BW7 nanocomposites were thinner than those on BW5 nanocomposites. Notably, the nanocomposites exhibited high antibacterial activity against Escherichia coli ATCC 25922. The antibacterial activity was higher for BW7 nanocomposites due to a larger silver phosphate content in the composition and a thin organic overlayer. The growth of Agmet in the structure adversely affected the antimicrobial property of the nanocomposites.

show abstract

Synthesis and Antibacterial Activity of (AgCl, Ag)NPs/Diatomite Hybrid Composite

Cited by 26 publications

References 48 publications

Green Synthesis and Characterization of Antimicrobial Synergistic AgCl/BAC Nanocolloids

Green Synthesis and Characterization of Antimicrobial Synergistic AgCl/BAC Nanocolloids

A Green Method for Synthesis of Silver-Nanoparticles-Diatomite (AgNPs-D) Composite from Pineapple (<i>Ananas comosus</i>) Leaf Extract

Valorization of Brewery Wastes for the Synthesis of Silver Nanocomposites Containing Orthophosphate

Contact Info

Product

Resources

About