نتایج جستجو برای: nano fe3o4

تعداد نتایج: 55238  

Journal: :Advanced pharmaceutical bulletin 2013
Mostafa Heidari Majd Jaleh Barar Davoud Asgari Hadi Valizadeh Mohammad Reza Rashidi Vala Kafil Javid Shahbazi Yadollah Omidi

PURPOSE To achieve simultaneous imaging and therapy potentials, targeted fluoromagnetic nanoparticles were synthesized and examined in human breast cancer MCF-7 cells. METHODS Fe3O4 nanoparticles (NPs) were synthesized through thermal decomposition of Fe(acac)3. Then, magnetic nanoparticles (MNPs) modified by dopamine-poly ethylene glycol (PEG)-NH2; finally, half equivalent fluorescein isothi...

Journal: :Colloids and surfaces. B, Biointerfaces 2014
Qiu-Yun Chen Zhi-Wei Wang Xia Yang Li Wang

Multifunctional silica nano-vehicles (SiO2@indol-IL) and magnetic nanoparticles (Fe3O4@indol-IL) were constructed through the Schiff bases condensation of indole-3-carboxaldehyde and 4-acetyl-N-allyl pyridinium chloride (ILs) with the amine groups of silica and magnetic nanoparticles. SiO2@indol-IL can inhibit the proliferation of HepG-2 cells in 48 h. Fe3O4@indol-IL can mimic the function of c...

2014
Divya Jyoti

Recently the applications of functionalized magnetic nano particles are increased in a linear fashion. This is due to the ease of synthesis and controlled growth of magnetic nano particles. In the present investigation gentamicin drug functionalized Fe3O4 nanoparticles were synthesized by co-precipitation method. Thus obtained nano hybrid was characterized by Fourier transform infrared (FTIR) s...

2004
Zhixin Yu De Chen Bård Tøtdal Anders Holmen

Interests on carbon nanostructures are growing over the decades since the discovery of buckminsterfullerene and carbon nanotubes (CNTs). The chemical vapor deposition method is promising for nano-carbon synthesis, because it is capable of controlling the carbon structure and achieving high yield. The fine-tuning of different carbon structures is normally focused on varying catalyst compositions...

2008
S. Ghosh T. Cai S. GhoshMitra A. Neogi Z. Hu N. Mills

A novel magneto-active gel based nanomaterial system is presented to provide precise control of temperature to a localized area in response to externally controlled magnetic stimuli. Integration of ferromagnetic nanoparticles (Fe3O4) in the polyethylene glycol (PEG) based thermo-responsive polymer provides the swelling and de-swelling behavior of magnetic stimuli controlled system by generating...

2016
Hailin Cong Xiaodan Xu Bing Yu Zhaohui Yang Xiaoyan Zhang

Carbon nanotube (CNT) nanoporous membranes based on pre-aligned CNTs have superior nano-transportation properties in biological science. Herein, we report a smart temperature- and temperature-magnetic-responsive CNT nanoporous membrane (CNM) by grafting thermal-sensitive poly(N-isopropylacrylamide) (PNIPAM) and Fe3O4 nanoparticles (Fe3O4-NPs) on the open ends of pre-aligned CNTs with a diameter...

2017
Swati Rawat Suzanne A. Apodaca Wenjuan Tan Jose R. Peralta-Videa Jorge L. Gardea-Torresdey

Abstract The effects of engineered nanoparticles (ENPs) in living organisms are described in a myriad of articles. Most of the literature on this topic is devoted to plants of different gender and species. Studies from laboratories and greenhouse facilities highlight effects on chlorophyll production, plant growth, stress enzyme activities, phytotoxicity, cytotoxicity, and genotoxicity. With fe...

Journal: :Cement & Concrete Composites 2021

The effects of concentration and particle size nano-Fe3O4 particles on the evolution structural build-up cementitious paste under magnetic field are experimentally investigated then verified by theoretical calculations. Three types with various sizes exploited. results show that liquid-like properties incorporated pastes increase immediately after initiation an external extent this increment in...

Journal: :international journal of nano dimension 0
n. khalighyan department of chemistry, marvdasht branch, islamic azad university, marvdasht, iran. n. hooshmand department of chemistry, marvdasht branch, islamic azad university, marvdasht, iran. n. razzaghi-asl medicinal and natural products chemistry research center, shiraz university of medical sciences, shiraz, iran. k. zare chemistry department, shahid beheshti university, tehran, evin, iran. r. miri medicinal and natural products chemistry research center, shiraz university of medical sciences, shiraz, iran.

in the present study, fe3o4 super paramagnetic nanoparticles were synthesized via co-precipitation of fe3+ and fe2+ chloride salts in the presence of ammonia solution. the product was characterized by fourier transform infrared spectroscopy (ft-ir), transmission electron microscopy (tem), and zeta–potential particle size distributing methods. the synthetic procedure of nano iron oxides were opt...

2016
Lei Jia Tao Zhou Jun Xu Xiaohui Li Kun Dong Jiancui Huang Zhouqing Xu

Janus particles (JPs) are unique among the nano-/microobjects because they provide asymmetry and can thus impart drastically different chemical or physical properties. In this work, we have fabricated the magnetic halloysite nanotube (HNT)-based HNTs@Fe3O4 nanocomposite (NCs) and then anchored the Janus Au-Ni or isotropic Au nanoparticles (NPs) to the surface of external wall of sulfydryl modif...

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