Preparation of silver iodide nanoparticles using laser ablation in liquid for antibacterial applications
In this study, the authors reported the first synthesis process of silver iodide (AgI) nanoparticles (NPs) by pulsed laser ablation of the AgI target in deionised distilled water. The optical and structural properties of AgI NPs were investigated by using UV–vis absorption, X-ray diffraction, scanning electron microscope (SEM), energy dispersive X-ray, Fourier transform infrared spectroscopy, and transmission electron microscope (TEM). The optical data showed the presence of plasmon peak at 434 nm and the optical bandgap was found to be 2.6 eV at room temperature. SEM results confirm the agglomeration ...
Source: IET Nanobiotechnology - August 17, 2018 Category: Nanotechnology Source Type: research
CL sensitisation of tris-(bipyridyl) ruthenium (II) – cerium (IV) reaction system by AgNPs for determination of GFX
The flow injection combined with tris-(bipyridyl) ruthenium (II)-cerium (IV) chemiluminescence (CL) method based on the sensitisation of silver nanoparticles (AgNPs) has been established for the quantitative analysis of gatifloxacin (GFX). AgNPs were synthesised using the reaction between ammonia gas and silver nitrate solution and was used to increase the CL intensity of the proposed system. The enhancement of CL intensity was linear with the concentration of GFX added. Effects of different experimental parameters were studied. Under the optimal conditions, the linear relationship was established between the concentration...
Source: IET Nanobiotechnology - August 17, 2018 Category: Nanotechnology Source Type: research
Biosynthesised AgCl NPs using Bacillus sp. 1/11 and evaluation of their cytotoxic activity and antibacterial and antibiofilm effects on multi-drug resistant bacteria
In this study, Bacillus spp., isolated from soil, were screened for AgNP synthesis at pH 12 with 5 mM Ag nitrate (AgNO3) final concentration at room temperature. The isolate with fastest color change and the best ultraviolet-visible spectrum in width and height were chosen as premier one. AgNO3 and citrate salts were compared in terms of their influence on NP synthesis. Spherical Ag chloride (AgCl) NPs with a size range of 35–40 nm were synthesized in 1.5 mM Ag citrate solution. Fourier transform infrared analysis demonstrated that protein and carbohydrates were capping agents for NPs. In this s...
Source: IET Nanobiotechnology - August 17, 2018 Category: Nanotechnology Source Type: research
Preparation and in vitro evaluation of novel cross-linked chondroitin sulphate nanoparticles by aluminium ions for encapsulation of green tea flavonoids
Chondroitin sulphate is a sulphated glycosaminoglycan biopolymer composed over 100 individual sugars. Chondroitin sulphate nanoparticles (NPs) loaded with catechin were prepared by an ionic gelation method using AlCl3 and optimised for polymer and cross-linking agent concentration, curing time and stirring speed. Zeta potential, particle size, loading efficiency, and release efficiency over 24 h (RE24%) were evaluated. The surface morphology of NPs was investigated by scanning electron microscopy and their thermal behaviour by differential scanning calorimetric. Antioxidant effect of NPs was determined by chelating ...
Source: IET Nanobiotechnology - August 17, 2018 Category: Nanotechnology Source Type: research
One-pot green synthesis and structural characterisation of silver nanoparticles using aqueous leaves extract of Carissa carandas: antioxidant, anticancer and antibacterial activities
This study demonstrated the biofabrication of AgNPs by using C. carandas leaves extract and a potential in vitro biological application as antioxidant, anticancer and antibacterial agents. (Source: IET Nanobiotechnology)
Source: IET Nanobiotechnology - August 17, 2018 Category: Nanotechnology Source Type: research
