نتایج جستجو برای: ag nps

تعداد نتایج: 53692  

2015
Muhammad Ajaz Hussain Abdullah Shah Ibrahim Jantan Muhammad Raza Shah Muhammad Nawaz Tahir Riaz Ahmad Syed Nasir Abbas Bukhari

Polysaccharides are attracting the vigil eye of researchers in order to design the green synthesis of silver nanoparticles (Ag NPs) of diverse size, shape, and application. We report an environmentally friendly method to synthesize Ag NPs where no physical reaction conditions were employed. Hydroxypropylcellulose (HPC) was used as a template nanoreactor, stabilizer, and capping agent to obtain ...

2016
Xuan-Hung Pham Eunil Hahm Hyung-Mo Kim Seongbo Shim Tae Han Kim Dae Hong Jeong Yoon-Sik Lee Bong-Hyun Jun

A hybrid of Ag nanoparticle (NP)-embedded thin silica-coated graphene oxide (GO@SiO₂@Ag NPs) was prepared as a surface-enhanced Raman scattering (SERS) substrate. A 6 nm layer of silica was successfully coated on the surface of GO by the physical adsorption of sodium silicate, followed by the hydrolysis of 3-mercaptopropyl trimethoxysilane. Ag NPs were introduced onto the thin silica-coated gra...

2016
Jun Kinoda Masayuki Ishihara Hidemi Hattori Shingo Nakamura Koichi Fukuda Hidetaka Yokoe

Size-controlled spherical silver nanoparticles (<10 nm) and chitin-nanofiber sheet composites (Ag NPs/CNFS) have previously been reported to have strong antimicrobial activity in vitro. Although Ag NPs/CNFS have strong antimicrobial activity, their cytotoxicity has not been investigated. This study was performed to evaluate the effects of Ag NPs/CNFS on cytotoxicity for fibroblasts in vitro and...

2017
Matej Baláž Ľudmila Balážová Nina Daneu Erika Dutková Miriama Balážová Zdenka Bujňáková Yaroslav Shpotyuk

Within this study, a stable nanosuspension of silver nanoparticles (Ag NPs) was prepared using a two-step synthesis and stabilization approach. The Ag NPs were synthesized from a silver nitrate solution using the Origanum vulgare L. plant extract as the reducing agent. The formation of nanoparticles was finished upon 15 min, and subsequently, stabilization by polyvinylpyrrolidone (PVP) using we...

Journal: Nanochemistry Research 2017

In the present study, the extract of the plant of Oenothera biennis was used to green synthesis of silver nanoparticles (Ag NPs) as an environmentally friendly, simple and low cost method. And Additionally, TiO2/SiO2 was prepared via facile sol-gel method using starch as an important, naturally abundant organic polymer as an ideal support. The Ag NPs/TiO2/SiO<su...

Journal: :Journal of the Egyptian Society of Parasitology 2015
Halim A Saad Mohamed I Soliman Ahmed M Azzam B Mostafa

Nanoparticles (NPs) have received more attention as antiparasitic agents. In the present study, silver and copper nanoparticles were synthesized and characterized using scanning electron microscopy (SEM), transmission electron microscope (TEM) and X-ray fluorescence (XRF). The antiparasitic activity of Ag and CuO nanoparticles were tested against two of the most environmentally spread parasites...

2016
Peri Korshed Lin Li Zhu Liu Tao Wang

Silver nanoparticles (Ag NPs) are known to have antibacterial properties. They are commonly produced by chemical synthesis which involves the use of harmful reducing agents. Contras, the laser technique is able to generate high-purity Ag NPs in water with specified surface charge characteristics. In the past, the molecular mechanisms contributing to the bactericidal effects of Ag NPs have been ...

Journal: :Carbohydrate polymers 2015
Ana S Abreu M Oliveira Arsénio de Sá Rui M Rodrigues Miguel A Cerqueira António A Vicente A V Machado

Montmorillonite modified with a quaternary ammonium salt C30B/starch nanocomposite (C30B/ST-NC), silver nanoparticles/starch nanocomposite (Ag-NPs/ST-NC) and both silver nanoparticles/C30B/starch nanocomposites (Ag-NPs/C30B/ST-NC) films were produced. The nanoclay (C30B) was dispersed in a starch solution using an ultrasonic probe. Different concentrations of Ag-NPs (0.3, 0.5, 0.8 and 1.0mM) we...

Journal: :The Journal of toxicological sciences 2015
Shahab Ghaderi Seyed Reza Fatemi Tabatabaei Hossein Najafzadeh Varzi Masome Rashno

Steadily increased use of silver nanoparticles (Ag-NPs), has increased the amount of its exposure to humans and animals. Current scarce knowledge about the influences of prenatal exposure to Ag-NPs on postnatal outcomes, motivated us to investigate whether being exposed to it during pregnancy has any effects on neurobehavioral development of the adult offspring. Thirty virgin female NMRI mice w...

Journal: :Environmental pollution 2013
Enzo Lombi Erica Donner Shima Taheri Ehsan Tavakkoli Åsa K Jämting Stuart McClure Ravi Naidu Bradley W Miller Kirk G Scheckel Krasimir Vasilev

The increasing use of silver (Ag) nanoparticles [containing either elemental Ag (Ag-NPs) or AgCl (AgCl-NPs)] in commercial products such as textiles will most likely result in these materials reaching wastewater treatment plants. Previous studies indicate that a conversion of Ag-NPs to Ag2S is to be expected during wastewater transport/treatment. However, the influence of surface functionality,...

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