Silver Ions Release from Antibacterial Chitosan Films Containing in Situ Generated Silver Nanoparticles

2012 ◽  
Vol 61 (1) ◽  
pp. 260-267 ◽  
Author(s):  
Gracia López-Carballo ◽  
Laura Higueras ◽  
Rafael Gavara ◽  
Pilar Hernández-Muñoz
Keyword(s):  
Silver Nanoparticles ◽  
Silver Ions ◽  
Chitosan Films

In-Situ Preparation of Silver Nanoparticles and Single Crystal in Linear Chitosan Films

2003 ◽  
Vol 19 (05) ◽  
pp. 464-468 ◽  
Author(s):  
Yao Su-Wei ◽  
◽  
Liu Heng-Quan ◽  
Zhang Wei-Guo ◽  
Wang Hong-Zhi ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Single Crystal ◽  
Chitosan Films

In situ reduction of antibacterial silver ions to metallic silver nanoparticles on bioactive glasses functionalized with polyphenols

2017 ◽  
Vol 396 ◽  
pp. 461-470 ◽  
Author(s):  
S. Ferraris ◽  
M. Miola ◽  
A. Cochis ◽  
B. Azzimonti ◽  
L. Rimondini ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Silver Ions ◽  
Metallic Silver ◽  
In Situ Reduction ◽  
Bioactive Glasses

Core–Shell γ-Fe2O3/SiO2/PCA/Ag-NPs Hybrid Nanomaterials as a New Candidate for Future Cancer Therapy

2014 ◽  
Vol 13 (01) ◽  
pp. 1450008 ◽  
Author(s):  
R. Soleyman ◽  
A. Pourjavadi ◽  
N. Masoud ◽  
A. Varamesh
Keyword(s):  
Silver Nanoparticles ◽  
Cancer Therapy ◽  
Silver Ions ◽  
Core Shell ◽  
Capping Agent ◽  
Hybrid Nanomaterials ◽  
Ag Nps ◽  
Core Nanoparticles ◽  
Size And Structure

In the current study, γ- Fe 2 O 3/ SiO 2/ PCA / Ag -NPs hybrid nanomaterials were successfully synthesized and characterized. At first, prepared γ- Fe 2 O 3 core nanoparticles were modified by SiO 2 layer. Then they were covered by poly citric acid (PCA) via melting esterification method as well. PCA shell acts as an effective linker, and provides vacancies for conveying drugs. Moreover, this shell as an effective capping agent directs synthesis of silver nanoparticles ( Ag -NPs) via in situ photo-reduction of silver ions by sunlight-UV irradiation. This system has several benefits as a suitable cancer therapy nanomaterial. Magnetic nanoparticles (MNPs) can guide Ag -NPs and drugs to cancer cells and then Ag -NPs can affect those cells via Ag -NPs anti-angiogenesis effect. Size and structure of the prepared magnetic hybrid nanomaterials were characterized using FTIR and UV-Vis spectra, AFM and TEM pictures and XRD data.

In situ formation of silver nanoparticles in PMMA via reduction of silver ions by butylated hydroxytoluene

2010 ◽  
Vol 22 (1) ◽  
pp. 11-15 ◽  
Author(s):  
M. Z. Kassaee ◽  
M. Mohammadkhani ◽  
A. Akhavan ◽  
R. Mohammadi
Keyword(s):  
Silver Nanoparticles ◽  
Silver Ions ◽  
Butylated Hydroxytoluene ◽  
In Situ Formation

Nano-silver in situ hybridized collagen scaffolds for regeneration of infected full-thickness burn skin

2015 ◽  
Vol 3 (20) ◽  
pp. 4231-4241 ◽  
Author(s):  
Junfei Song ◽  
Pengfei Zhang ◽  
Lu Cheng ◽  
Yue Liao ◽  
Bing Xu ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Silver Ions ◽  
Collagen Matrix ◽  
Full Thickness ◽  
Collagen Scaffolds ◽  
Nano Silver

Histidine incorporated into a collagen matrix was used as a template to chelate silver ions which were reduced to silver nanoparticles in situ.

TiO2 NANOTUBES-POLYDOPAMINE-SILVER COMPOSITES FOR LONG-TERM ANTIBACTERIAL PROPERTIES: PREPARATION AND CHARACTERIZATION

2019 ◽  
Vol 31 (03) ◽  
pp. 1950023 ◽  
Author(s):  
Abolfazl Mirjalili ◽  
Ali Zamanian ◽  
Mohamad Mahdi Hadavi
Keyword(s):  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Electron Microscope ◽  
In Situ Polymerization ◽  
Hydrothermal Process ◽  
Adhesive Layer ◽  
Silver Ions ◽  
Titania Nanoparticles

In this study, antibacterial activity and long-lasting release of silver for clinical applications were achieved by utilizing silver nanoparticles on the Titania nanotubes (TNTs) through in situ polymerization of polydopamine (PDA). TNTs were synthesized with the hydrothermal process from Titania nanoparticles. Then the surface modification of TNTs was accomplished by in situ polymerization of PDA and silver ions were reduced on the PDA surface. The feature of obtained samples was characterized using transmission electron microscope (TEM), field emission scanning electron microscope (FESEM), X-ray diffraction spectroscopy (XRD), Fourier-transform infrared spectroscopy (FTIR) and atomic absorption spectrophotometry (AAS). The results showed that PDA layer formed on the synthesized anatase TNTs surface. This used as reduction agent for silver ions as well as an adhesive layer to tethering the silver nanoparticles on TNTs surface. AAS results indicated that silver ions reduction to silver nanoparticles on the TNTs surface increased from 3.1 wt.% to 9.6 wt.% in presence of PDA. Also, the results of silver release revealed that PDA worked as an adhesive layer by chelating silver nanoparticles on TNTs and slowing silver ions release rate which implying the possible long-term antibacterial activity of PDA coated TNTs. Besides that, TNTs showed 33% antibacterial activity which is half than silver loaded TNTs-PDA samples. This confirms that PDA have extraordinary effect on the antibacterial activity. This work offers a facile process for the preparation of long-lasting silver based antibacterial activity and facilitates their clinical application in the modern biomedical fields.

Polymethacrylic acid–facilitated nanofiber matrix loading Ag nanoparticles for SERS measurements

RSC Advances ◽  
2014 ◽  
Vol 4 (73) ◽  
pp. 38783-38790 ◽  
Author(s):  
Hui Yang ◽  
Cheng Zhi Huang
Keyword(s):  
Silver Nanoparticles ◽  
Malachite Green ◽  
Ag Nanoparticles ◽  
Organic Pollutant ◽  
Silver Ions ◽  
Polymethacrylic Acid ◽  
Ultrafine Fibers ◽  
Sers Substrates

By introducing polymethacrylic acid (PMAA), fairly uniform PMAA/poly(N-vinylpyrrolidone) (PVP) ultrafine fibers containing silver nanoparticles (AgNPs) for SERS substrates were successfully prepared via electrospinning by means of in situ photoreduction of silver ions. This makes the detection results reproducible with RSD values below 0.2% through the SERS signals to detect malachite green (MG), a significant environmental organic pollutant, for its genotoxicity.

Sign in / Sign up

Export Citation Format

Share Document