نتایج جستجو برای: silver nanoparticles agnps

تعداد نتایج: 141492  

2017
Nicholas Skandalis Anastasia Dimopoulou Anthie Georgopoulou Nikolaos Gallios Dimitrios Papadopoulos Dimitrios Tsipas Ioannis Theologidis Nikolaos Michailidis Maria Chatzinikolaidou

Silver nanoparticles (AgNPs) have been demonstrated to restrain bacterial growth, while maintaining minimal risk in development of bacterial resistance and human cell toxicity that conventional silver compounds exhibit. Several physical and chemical methods have been reported to synthesize AgNPs. However, these methods are expensive and involve heavy chemical reduction agents. An alternative ap...

Journal: :ecopersia 2013
mohammad reza kalbassi seyed ali johari mahdi soltani il yu

in order to understand the importance of particle size and agglomeration for nano-eco-toxicological studies in aquatic environments, the acute toxicity of two different types (suspended powder and colloidal) of silver nanoparticles (agnps) were studied in alevin and juvenilerainbow trout. fish were exposed to each type of agnps at nominal concentrations of 0.032, 0.1, 0.32, 1, 3.2, 10, 32, and ...

2013
Cristina Fernández-Blanco Álvaro Colina Aránzazu Heras

A new controlled current multipulse methodology has been developed to modify the screen-printed electrode surface with silver nanoparticles (AgNPs). Spectroelectrochemistry has provided not only information about the type of nanoparticles (NPs) deposited on the electrode surface, but also about the electrosynthesis process. Small NPs without plasmon band are initially generated. Next, these nuc...

2016
Palaniyandi Velusamy Chia-Hung Su Govindarajan Venkat Kumar Shritama Adhikary Kannaiyan Pandian Subash C. B. Gopinath Yeng Chen Periasamy Anbu

In the current study, facile synthesis of carboxymethyl cellulose (CMC) and sodium alginate capped silver nanoparticles (AgNPs) was examined using microwave radiation and aniline as a reducing agent. The biopolymer matrix embedded nanoparticles were synthesized under various experimental conditions using different concentrations of biopolymer (0.5, 1, 1.5, 2%), volumes of reducing agent (50, 10...

Journal: :Biomaterials 2013
Dawei Guo Lingying Zhu Zhihai Huang Haixia Zhou Yue Ge Wenjuan Ma Jie Wu Xiuyan Zhang Xuefeng Zhou Yu Zhang Yun Zhao Ning Gu

Silver nanoparticles (AgNPs) have anti-cancer effect. However, whether and how these particles could inhibit the growth of acute myeloid leukemia (AML) cells is unclear. In the present study, we prepared AgNPs with various sizes and investigated their cytotoxic effect on AML cells. We found that AgNPs could inhibit the viability of AML cells including the isolates from AML patients. AgNPs cause...

Nowadays, green synthesis of metal nanoparticles has become a promising synthetic strategy in nanotechnology and materials sciences. In this research, biosynthesis of silver nanoparticles (AgNPs) was successfully accomplished in the presence of Prosopis farcta fruit extract as a reducing agent. Proceeding of the reaction was assessed by using UV–vis spectroscopy. Characterization of silver nano...

2013
Pedro Jose Rivero Javier Goicoechea Aitor Urrutia Ignacio Raul Matias Francisco Javier Arregui

In the present study, we show that silver nanoparticles (AgNPs) with different shape, aggregation state and color (violet, green, orange) have been successfully incorporated into polyelectrolyte multilayer thin films using the layer-by-layer (LbL) assembly. In order to obtain colored thin films based on AgNPs is necessary to maintain the aggregation state of the nanoparticles, a non-trivial asp...

2017
Jinmeng Li Qinqin Ma Huanhuan Shao Xia Zhou Hongmei Xia Jie Xie

Silver nanoparticles (AgNPs) were synthesized from AgNO3 using rice straw biomass as the reducing agent at room temperature via light irradiation. Full wavelength scanning with UV/Vis spectrophotometer was used to study the effect of light intensity, reaction time, and concentrations of rice straw biomass and AgNO3 during AgNPs synthesis. Surface plasmon resonance (SPR) showed that the peak wav...

2018
Shahid Ullah Khan Tawfik A Saleh Abdul Wahab Muhammad Hafeez Ullah Khan Dilfaraz Khan Wasim Ullah Khan Abdur Rahim Sajid Kamal Farman Ullah Khan Shah Fahad

Silver nanotechnology has received tremendous attention in recent years, owing to its wide range of applications in various fields and its intrinsic therapeutic properties. In this review, an attempt is made to critically evaluate the chemical, physical, and biological synthesis of silver nanoparticles (AgNPs) as well as their efficacy in the field of theranostics including microbiology and par...

2018
Andrea Rónavári Nóra Igaz Mohana Krishna Gopisetty Bettina Szerencsés Dávid Kovács Csaba Papp Csaba Vágvölgyi Imre Miklós Boros Zoltán Kónya Mónika Kiricsi Ilona Pfeiffer

Background Epidemiologic observations indicate that the number of systemic fungal infections has increased significantly during the past decades, however in human mycosis, mainly cutaneous infections predominate, generating major public health concerns and providing much of the impetus for current attempts to develop novel and efficient agents against cutaneous mycosis causing species. Innovati...

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