A novel strategy to prepare silver nanoparticles by ethanol-induced shape conversion of silver dendrites from modified galvanic replacement

2014 ◽  
Vol 187 ◽  
pp. 185-192 ◽  
Author(s):  
Jingjun Liu ◽  
Mingan Hu ◽  
Ye Song ◽  
Feng Wang ◽  
Jing Ji ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Galvanic Replacement ◽  
Silver Dendrites ◽  
Novel Strategy

Influence of ultrasound on the synthesis of silver nanoparticles by galvanic replacement in sodium polyacrylate solutions

2021 ◽  
Vol 4 (2) ◽  
pp. 17-22
Author(s):  
G. І. Zozulia ◽  
◽  
R. V. Mnykh ◽  
О. І. Kuntyi ◽  
А. S. Lapa ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Reducing Agents ◽  
Maximum Absorption ◽  
Galvanic Replacement ◽  
Sodium Polyacrylate ◽  
Mechanical Stirring ◽  
Magnesium Surface

Sonogalvanic replacement and galvanic replacement synthesis of silver nanoparticles (AgNPs) by magnesium scrap in sodium polyacrylate solutions were studied. It was found that during these processes in NaPA solutions silver is practically not deposited on the magnesium surface. Sodium polyacrylate provides stabilization of AgNPs with the formation of yellow solutions with maximum absorption of ~415 nm. It is shown that sonogalvanic replacement synthesis of AgNPs occurs due to the simultaneous course of galvanic replacement by magnesium and sonoreduction of Ag (I) by radicals and reducing agents. The rate of sonogalvanic replacement synthesis of AgNPs is 20-30% higher compared to galvanic substitution by mechanical stirring.

scholarly journals In situ liquid-cell electron microscopy of silver–palladium galvanic replacement reactions on silver nanoparticles

2014 ◽  
Vol 5 (1) ◽  
Author(s):  
E. Sutter ◽  
K. Jungjohann ◽  
S. Bliznakov ◽  
A. Courty ◽  
E. Maisonhaute ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Silver Nanoparticles ◽  
Galvanic Replacement ◽  
Liquid Cell ◽  
Silver Palladium

scholarly journals Synthesis of hollow PtAg alloy nanospheres with excellent electrocatalytic performances towards methanol and formic acid oxidations

RSC Advances ◽  
2016 ◽  
Vol 6 (50) ◽  
pp. 44902-44907 ◽  
Author(s):  
Fulin Zheng ◽  
Sin-Yee Luk ◽  
Tsz-Lung Kwong ◽  
Ka-Fu Yung
Keyword(s):  
Silver Nanoparticles ◽  
Formic Acid ◽  
Galvanic Replacement ◽  
Galvanic Replacement Reaction ◽  
Replacement Reaction

Hollow PtAg alloy nanospheres were synthesized via galvanic replacement reaction between silver nanoparticles and K2PtCl4 at 60 °C.

scholarly journals The Antibacterial Effects of Supermolecular Nano-Carriers by Combination of Silver and Photodynamic Therapy

2021 ◽  
Vol 9 ◽  
Author(s):  
Gui-ning Feng ◽  
Xiao-tao Huang ◽  
Xin-lin Jiang ◽  
Ting-wei Deng ◽  
Qiu-xia Li ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Photodynamic Therapy ◽  
Treatment Strategies ◽  
Therapeutic Effects ◽  
Antibacterial Efficacy ◽  
High Concentration ◽  
Efficient Treatment ◽  
Antibacterial Performance ◽  
High Concentrations ◽  
Novel Strategy

The over-use of antibiotics has promoted multidrug resistance and decreased the efficacy of antibiotic therapy. Thus, it is still in great need to develop efficient treatment strategies to combat the bacteria infection. The antimicrobial photodynamic therapy (aPDT) and silver nanoparticles have been emerged as effective antibacterial methods. However, the silver therapy may induce serious damages to human cells at high concentrations and, the bare silver nanoparticles may rapidly aggregate, which would reduce the antibacterial efficacy. The encapsulation of sliver by nano-carrier is a promising way to avoid its aggregation and facilitates the co-delivery of drugs for combination therapy, which does not require high concentration of sliver to exert antibacterial efficacy. This work constructed a self-assembled supermolecular nano-carrier consisting of the photosensitizers (PSs), the anti-inflammatory agent and silver. The synthesized supermolecular nano-carrier produced reactive oxygen species (ROS) under the exposure of 620-nm laser. It exhibited satisfying biocompatibility in L02 cells. And, this nano-carrier showed excellent antibacterial efficacy in Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) as indicated by bacterial growth and colony formation. Its antibacterial performance is further validated by the bacteria morphology through the scanning electron microscope (SEM), showing severely damaged structures of bacteria. To summary, the supermolecular nano-carrier TCPP-MTX-Ag-NP combining the therapeutic effects of ROS and silver may serve as a novel strategy of treatment for bacterial infection.

scholarly journals Double Plasmon Resonance Nanostructured Silver Coatings with Tunable Properties

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Anna Kuzminova ◽  
Pavel Solař ◽  
Peter Kúš ◽  
Ondřej Kylián
Keyword(s):  
Silver Nanoparticles ◽  
The Novel ◽  
Surface Plasmon Resonances ◽  
Visible Part ◽  
Surface Enhanced ◽  
Plasmon Resonances ◽  
Application Potential ◽  
Sputter Deposited ◽  
Novel Strategy ◽  
High Application

Plasmonic materials that exhibit dual or multiple localised surface plasmon resonances (LSPRs) due to their high application potential in biosensing and biodetection are gaining increasing attention. Here, we report on the novel strategy suitable for the production of silver nanostructured dual-LSPR coatings. This fully vacuum-based technique uses a magnetron sputtering of Ag and a gas aggregation source of silver nanoparticles. It is shown that when combined, produced Ag nano-islands and nanoparticles exhibit due to their different sizes and shapes two independent LSPRs in the visible part of spectra. Furthermore, the intensities and positions of individual LSPR may be precisely controlled by the amount of sputter-deposited nano-islands and a number of Ag nanoparticles, which opens new possibilities for the tailor-made production of novel platforms for surface-enhanced spectroscopic biodetection.

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