Synthetic Routes for the Preparation of Silver Nanoparticles

Pacioni, Natalia L.; Borsarelli, Claudio D.; Rey, Valentina; Veglia, Alicia V.

doi:10.1007/978-3-319-11262-6_2

Cited by 117 publications

(100 citation statements)

References 91 publications

(177 reference statements)

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“…A small particle size is important because it can facilitate its integration into the cotton fabric. On the other hand, the smaller the particles are, the greater is the covered surface area, and their bactericidal capacity, since they will have greater interaction with the microorganisms [11]. In addition, according to the studies carried out by Lee and Jeong [7], when the particle size is small, there is a lower risk of skin irritation in the case of direct contact of nanoparticles with human tissues.…”

Section: Resultsmentioning

confidence: 99%

Mejoramiento de la absorción de nanopartículas de plata en telas de algodón, utilizando un ligante

2017

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In this work, silver nanoparticles were synthesized by the polyol process, which reduces silver nitrate with ethylene glycol. The temperature effect and the polyvinylpyrrolidone (PVP) amount were studied. The temperatures used were 100, 120 and 140 °C. Three ratios of 0.00, 0.25, and 0.50 (% w/w) of PVP/AgNO3 were established. Nanoparticles with sizes less than 30 nm were obtained in conditions of 120 °C and 0.5 % w/w of PVP/AgNO3. Posteriorly, nanoparticles in concentrations of 10 and 20 ppm were deposited on cotton fabric by the pad-dry-cure technique, in order to analyze their bactericidal properties against the Gram positive bacteria Staphylococcus aureus 25923. The tests showed that cotton fabric with nanoparticles in concentrations of 10 and 20 ppm had good bactericidal properties, reducing bacterial colonies by over 98 %. Finally, a washing stability study of the fabrics impregnated with silver nanoparticles was performed, and an acrylic binder was added during the impregnation process. The results were obtained by bacteriological analyzes.

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Section: Resultsmentioning

confidence: 99%

Mejoramiento de la absorción de nanopartículas de plata en telas de algodón, utilizando un ligante

2017

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“…After staining, the silver nitrate-stained samples were drained and 1 ml of freshly prepared hydroquinone-reducing solution was added and left under aluminium foil for 1 min, followed by a distilled water rinse. While colloid size was not assessed, similar methodology generates colloids in the region of 11 nm, with a range up to 65 nm (Cassar et al, 2014;Pacioni et al, 2015). The osmium tetroxide-uranyl acetate-nano gold and silver nitrate-stained samples were washed twice for 10 min with 1.5 ml 0.1 M PIPES buffer.…”

Section: Methodsmentioning

confidence: 99%

Development of X-ray micro-focus computed tomography to image and quantify biofilms in central venous catheter models in vitro

et al. 2016

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Bacterial infections of central venous catheters (CVCs) cause much morbidity and mortality, and are usually diagnosed by concordant culture of blood and catheter tip. However, studies suggest that culture often fails to detect biofilm bacteria. This study optimizes X-ray micro-focus computed tomography (X-ray µCT) for the quantification and determination of distribution and heterogeneity of biofilms in in vitro CVC model systems. Bacterial culture and scanning electron microscopy (SEM) were used to detect Staphylococcus epidermidis ATCC 35984 biofilms grown on catheters in vitro in both flow and static biofilm models. Alongside this, X-ray µCT techniques were developed in order to detect biofilms inside CVCs. Various contrast agent stains were evaluated using energy-dispersive X-ray spectroscopy (EDS) to further optimize these methods. Catheter material and biofilm were segmented using a semi-automated MATLAB script and quantified using the Avizo Fire software package. X-ray µCT was capable of distinguishing between the degree of biofilm formation across different segments of a CVC flow model. EDS screening of single-and dual-compound contrast stains identified 10 nm gold and silver nitrate as the optimum contrast agent for X-ray µCT. This †These authors contributed equally to this work.Supplementary material is available with the online version of this paper. ã 2016 The Authors Printed in Great Britain

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“…The mechanisms involved in the particle nucleation were discussed as a key to predicting the outcome of any synthetic method. The end use or application of the nanomaterial determines the choice of the synthetic route, and this is not an easy decision as the product size and shape depends on the metal precursor, capping election, temperature of the reaction, amongst other factors (Pacioni et al, 2015). Several nanoparticles have been prepared using the chemical reduction method.…”

Section: Reduction By Citrate Anionmentioning

confidence: 99%

Scientific applications and prospects of nanomaterials: A multidisciplinary review

Adeola¹,

Oluwaseun²,

Teslim³

et al. 2019

Afr. J. Biotechnol.

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Nanotechnology is the science of objects <100 nm in size. Research into the development and application of nanomaterials takes a material science and engineering-based approach to nanotechnology. Nanomaterials often possess interesting optical, electronic and mechanical properties. The capacity to construct large, intricate structures with nanometer precision is rapidly increasing and consists several top-down reductive approaches and bottom-up additive approaches to satisfy its applicability in several fields of science. The physicochemical property of nano-functional materials and structural flexibility, promotes its vast application in chemistry and chemical engineering; physics and electronics; biochemistry and medical science, exploration and mining; computer science and engineering. A large pool of information was accessed via several reputable published books and articles, with the sole aim to contribute to the establishment of a stronger theoretical basis for the growing application of nanomaterials in several field of science. It has been established that nanomaterials and advancement in nanotechnology holds great potential in solving several global problems, and if properly harnessed with the right synergy between disciplines or fields in science, would increase the quality of life on Earth.

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Synthetic Routes for the Preparation of Silver Nanoparticles

Cited by 117 publications

References 91 publications

Mejoramiento de la absorción de nanopartículas de plata en telas de algodón, utilizando un ligante

Mejoramiento de la absorción de nanopartículas de plata en telas de algodón, utilizando un ligante

Development of X-ray micro-focus computed tomography to image and quantify biofilms in central venous catheter models in vitro

Scientific applications and prospects of nanomaterials: A multidisciplinary review

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