نتایج جستجو برای: zerovalent iron nanoparticles

تعداد نتایج: 243161  

2014

The production and use of iron oxide nanoparticles are growing exponentially due to its wide applications in different fields of science and technology. The objective of this study is to synthesize iron oxide nanoparticles, and modification of its surface to make it less toxic. The iron oxide nanoparticles were synthesized by chemical co-precipitation method, and surface modification was done u...

2014
Keisuke Takahashi Yongming Wang Shotaro Chiba Yuki Nakagawa Shigehito Isobe Somei Ohnuki

Hydrogenation of iron nanoparticles was performed both computationally and experimentally where previously chemically-bonded iron hydride is considered to be unachievable under ordinary conditions. Density functional theory (DFT) calculations predict that hydrogenated iron nanoparticles are stabilized on a single-layer graphene/Cu substrate. Experimentally, iron nanoparticles were deposited ont...

Journal: :تحقیقات دامپزشکی 0
ناصح محمدی گروه شیلات، دانشکده منابع طبیعی دانشگاه ارومیه، ارومیه– ایران امیر توکمه چی گروه پاتوبیولوژی و کنترل کیفی و بیوتکنولوژی، پژوهشکده آرتمیا و آبزیان دانشگاه ارومیه، ارومیه– ایران

background: today the use of natural substances plays a major role in improving the growth and immunity of aquatic organisms. objectives: the purpose of the present study was to evaluate the effects of iron nanoparticles with lactobacillus casei as a probiotic on growth parameters and probiotic counts in rainbow trout intestine. methods: seven hundred and twenty fish with 12±0.49 g initial weig...

The structural properties and microwave absorption capability of the iron nanoparticles and iron-carbon core-shell nanoparticles have been studied, in the present paper. The investigated nanoparticles were synthesized by hydrothermal route and by reduction of hematite nanoparticles during annealing in argon-hydrogen atmosphere. Hematite-iron phase transformation during the reduction process has...

Journal: :Bioresource technology 2014
Yanmei Zhou Bin Gao Andrew R Zimmerman Hao Chen Ming Zhang Xinde Cao

This work describes the synthesis and testing of a novel environmental sorbent that combines the advantages of biochar, chitosan, and zerovalent iron (ZVI). Chitosan was used as a dispersing and soldering reagent to attach fine ZVI particles onto bamboo biochar surfaces. Characterization of the resulted ZVI-biochar composites (BBCF) indicated that chitosan effectively soldered the iron particle...

Journal: :Dalton transactions 2011
Minfeng Fang Nataliya Machalaba Roberto A Sánchez-Delgado

A nanostructured catalyst composed of Ru nanoparticles immobilized on poly(4-vinylpyridine) (PVPy) has been synthesized by NaBH(4) reduction of RuCl(3)·3H(2)O in the presence of the polymer in methanol at room temperature. TEM measurements show well-dispersed Ru nanoparticles with an average diameter of 3.1 nm. Both powder XRD patterns and XPS data indicate that the Ru particles are predominant...

Journal: :Einstein 2012
Tatiana Taís Sibov Liza Aya Mabuchi Miyaki Javier Bustamante Mamani Luciana Cavalheiro Marti Luiz Roberto Sardinha Lorena Favaro Pavon Daniela Mara de Oliveira Walter Humberto Cardenas Lionel Fernel Gamarra

OBJECTIVE The objective of this study was to evaluate the effect of the labeling of umbilical cord vein derived mesenchymal stem cells with superparamagnetic iron oxide nanoparticles coated with dextran and complexed to a non-viral transfector agent transfector poly-L-lysine. METHODS The labeling of mesenchymal stem cells was performed using the superparamagnetic iron oxide nanoparticles/dext...

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