Development of Ag nanoparticles on the surface of Ti powders by chemical reduction method and investigation of their antibacterial properties

Somlyai-Sipos, László; Baumli, Péter; Sycheva, Anna; Kaptay, George; Szőri-Dorogházi, Emma; Kristály, Ferenc; Mikó, Tamás; Janovszky, D.

doi:10.1016/j.apsusc.2020.147494

Cited by 17 publications

(6 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nanoparticles have unique properties and are widely used in catalysis [ 1 , 2 , 3 , 4 , 5 ], bioimaging and sensing [ 6 , 7 , 8 ], diagnostics, and therapies [ 9 , 10 ]. The materials with a Ag coating demonstrate strong antibacterial and antiviral abilities, and potentially can be used to fight COVID-19 [ 11 , 12 ]. The specific optical properties of silver and gold NPs, due to the localized surface plasmon resonance (LSPR), make it possible to use NPs of these metals for the detection of SARS-CoV-2 [ 13 ] and MERS-CoV [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Evolution of Electronic State and Properties of Silver Nanoparticles during Their Formation in Aqueous Solution

Ershov

Tarasova

Ершов

2021

IJMS

View full text Add to dashboard Cite

The electron density of a nanoparticle is a very important characteristic of the properties of a material. This paper describes the formation of silver nanoparticles (NPs) and the variation in the electronic state of an NP’s surface upon the reduction in Ag+ ions with oxalate ions, induced by UV irradiation. The calculations were based on optical spectrophotometry data. The NPs were characterized using Transmission electron microscopy and Dynamic light scattering. As ~10 nm nanoparticles are formed, the localized surface plasmon resonance (LSPR) band increases in intensity, decreases in width, and shifts to the UV region from 402 to 383 nm. The interband transitions (IBT) band (≤250 nm) increases in intensity, with the band shape and position remaining unchanged. The change in the shape and position of the LSPR band of silver nanoparticles in the course of their formation is attributable to an increasing concentration of free electrons in the particles as a result of a reduction in Ag+ ions on the surface and electron injection by radicals. The ζ-potential of colloids increases with an increase in electron density in silver nuclei. A quantitative relationship between this shift and electron density on the surface was derived on the basis of the Mie–Drude theory. The observed blue shift (19 nm) corresponds to an approximately 10% increase in the concentration of electrons in silver nanoparticles.

show abstract

Section: Introductionmentioning

confidence: 99%

Evolution of Electronic State and Properties of Silver Nanoparticles during Their Formation in Aqueous Solution

Ershov

Tarasova

Ершов

2021

IJMS

View full text Add to dashboard Cite

show abstract

“…The desired combination of mechanical strength, biocompatibility, and antimicrobial activity can also be achieved by constructing multi-layers. Recent studies have confirmed the potential antibacterial behavior of Au, Cu, Zn, Ag additions to Ti-based films [16,17]. The biocidal performance of Cu is linked to the release of Cu +1 and Cu +2 ions, as observed in TiCu [18,19].…”

Section: Introductionmentioning

confidence: 79%

Biocompatibility and antibacterial properties of TiCu(Ag) thin films produced by physical vapor deposition magnetron sputtering

Rashid

Vita

Persichetti

et al. 2022

Applied Surface Science

View full text Add to dashboard Cite

“…coli is close to that of the normal growing bacteria, indicating that the neat SiO 2 nanofibers have no obvious antibacterial effects. After the two bacteria interacted with Ag-TEA@SiO 2 nanofibers, the measured absorbance was significantly lower than that of normal bacteria, indicating that the Ag nanoparticles in the composite nanofibers exhibited their inherent antibacterial effect Figure d also shows that the absorbance of the Ag-TEA@SiO 2 -0.03 sample is the smallest, indicating the strongest antibacterial effect.…”

Section: Results and Discussionmentioning

confidence: 99%

Facile One-Step Deposition of Ag Nanoparticles on SiO₂ Electrospun Nanofiber Surfaces for Label-Free SERS Detection and Antibacterial Dressing

Wan

Zhao

Peng

et al. 2021

ACS Appl. Bio Mater.

View full text Add to dashboard Cite

The fabrication of highly active and free-standing surface-enhanced Raman scattering (SERS) substrates in a simple and low-cost manner has been a crucial and urgent challenge in recent years. Herein, SiO2 nanofiber substrates modified with size-tunable Ag nanoparticles were prepared by the combination of electrospinning and in situ chemical reduction. The results demonstrate the presence and uniform adsorption of Ag nanoparticles on the SiO2 matrix surface. The free-standing composite nanofibrous substrates show high-performance SERS response toward 4-mercaptophenol and 4-mercaptobenzoic acid, and the detection limit can be as low as 10–10 mol/L. Most importantly, the as-prepared substrate as a versatile SERS platform can realize label-free detection of bio-macromolecules of bacteria, i.e., Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli). Furthermore, the substrates also possess outstanding antibacterial activities against S. aureus and E. coli. Briefly, the significance of this study is that size-tunable Ag nanoparticles can be decorated on SiO2 nanofiber surfaces with triethanolamine as a bridging and reducing agent through a one-pot reaction, and the as-prepared nanofibrous membranes are expected to act as a candidate for label-free SERS detection as well as antibacterial dressing.

show abstract

Development of Ag nanoparticles on the surface of Ti powders by chemical reduction method and investigation of their antibacterial properties

Cited by 17 publications

References 41 publications

Evolution of Electronic State and Properties of Silver Nanoparticles during Their Formation in Aqueous Solution

Evolution of Electronic State and Properties of Silver Nanoparticles during Their Formation in Aqueous Solution

Biocompatibility and antibacterial properties of TiCu(Ag) thin films produced by physical vapor deposition magnetron sputtering

Facile One-Step Deposition of Ag Nanoparticles on SiO₂ Electrospun Nanofiber Surfaces for Label-Free SERS Detection and Antibacterial Dressing

Contact Info

Product

Resources

About

Development of Ag nanoparticles on the surface of Ti powders by chemical reduction method and investigation of their antibacterial properties

Cited by 17 publications

References 41 publications

Evolution of Electronic State and Properties of Silver Nanoparticles during Their Formation in Aqueous Solution

Evolution of Electronic State and Properties of Silver Nanoparticles during Their Formation in Aqueous Solution

Biocompatibility and antibacterial properties of TiCu(Ag) thin films produced by physical vapor deposition magnetron sputtering

Facile One-Step Deposition of Ag Nanoparticles on SiO2 Electrospun Nanofiber Surfaces for Label-Free SERS Detection and Antibacterial Dressing

Contact Info

Product

Resources

About

Facile One-Step Deposition of Ag Nanoparticles on SiO₂ Electrospun Nanofiber Surfaces for Label-Free SERS Detection and Antibacterial Dressing