نتایج جستجو برای: cofe2o4 nanoparticles

تعداد نتایج: 107545  

2014
Barbara Drašler Damjana Drobne Sara Novak Janez Valant Sabina Boljte Lado Otrin Michael Rappolt Barbara Sartori Aleš Iglič Veronika Kralj-Iglič Vid Šuštar Darko Makovec Sašo Gyergyek Matej Hočevar Matjaž Godec Jernej Zupanc

BACKGROUND The purpose of this work is to provide experimental evidence on the interactions of suspended nanoparticles with artificial or biological membranes and to assess the possibility of suspended nanoparticles interacting with the lipid component of biological membranes. METHODS 1-Palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine (POPC) lipid vesicles and human red blood cells were incubat...

2018
Shahnaz Akhtar Wenzhen An Xiaoying Niu Kang Li Shahzad Anwar Khan Maaz Muhammad Maqbool Lan Gao

In this work, CoFe2O4 nanoparticles coated with polyethylene glycol (PEG) were successfully synthesized via a hydrothermal technique. Morphological studies of the samples confirmed the formation of polycrystalline pure-phase PEG-CoFe2O4 nanoparticles with sizes of about 24 nm. Toxicity induced by CoFe2O4 nanoparticles was investigated, and biological assays were performed to check the toxicity ...

2000
Chao Liu Adam J. Rondinone John Zhang

The CoFe2O4 nanoparticles have been synthesized by using a stable ferric salt of FeCl3 with a micellar microemulsion method. The normal micelles are formed by sodium dodecyl sulfate (NaDS) in aqueous solutions. The mean size of the nanoparticles can be controlled from less than 4 nm to about 10 nm through controlling the concentrations of the reagents. The neutron diffraction in combination wit...

2007
Dong-Hyun Kim Kyoung-Nam Kim Kwang-Mahn Kim In-Bo Shim Yong-Keun Lee

Magnetic nanoparticles offer some attractive possibilities in biomedicine because it has the special physical properties. Magnetic hyperthermia using magnetic nanoparticles requires that the magnetic particles have not only high heating ability in low magnetic field but also to be non-toxic for biomedical use. Although the reports of bulk magnetic materials or Fe3O4 nanoparticles have known for...

Journal: :Faraday discussions 2014
Yong Cao Sen-Rong Cai Shao-Cong Fan Wei-Qiang Hu Ming-Sen Zheng Quan-Feng Dong

CoFe2O4 nanoparticles were uniformly anchored on reduced graphene oxide by a facile solvothermal method. The obtained CoFe2O4/reduced graphene oxide (CoFe2O4/rGO) hybrid was employed as catalyst for Li-O2 batteries. It could effectively lower the ORR (oxygen reduction reaction) and OER (oxygen evolution reaction) overpotentials of the batteries and deliver a large capacity of 12 235 mA h grGO(-...

2016
Shitao Xu Yongqing Ma Bingqian Geng Xiao Sun Min Wang

Approximately single-domain-sized 9-, 13-, and 16-nm CoFe2O4 nanoparticles are synthesized using the thermal decomposition of a metal-organic salt. By means of dilution and reduction, the concentration, moment, and anisotropy of nanoparticles are changed and their influence on the magnetic properties is investigated. The relation of M r/M s ∝ 1/lgH dip is observed, where M r/M s is the remanenc...

2017
Tongfei Li Yinjie Lv Jiahui Su Yi Wang Qian Yang Yiwei Zhang Jiancheng Zhou Lin Xu Dongmei Sun Yawen Tang

The exploration of earth-abundant and high-efficiency electrocatalysts for the oxygen evolution reaction (OER) is of great significant for sustainable energy conversion and storage applications. Although spinel-type binary transition metal oxides (AB2O4, A, B = metal) represent a class of promising candidates for water oxidation catalysis, their intrinsically inferior electrical conductivity ex...

Journal: :advances in environmental technology 0
mohsen mehdipour ghazi faculty of chemical, petroleum, and gas engineering, semnan university, semnan, 35131-19111, iran fatemeh azhdari faculty of chemical, petroleum and gas engineering, semnan university, semnan, 35131-19111, iran.

the magnetic and recyclable nanoparticles of cofe2o4 were synthesized by a reverse co-precipitation process. sonication was used to couple the cofe2o4 surface with ag2o. the characteristics and optical properties of the catalyst were studied by powder x-ray diffraction, uv–visible reflectance spectroscopy and scanning electron microscopy analyses. pure cofe2o4 and cofe2o4/ag2o were utilized to ...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2014
yadolah ganjkhanlou abdolmajid bayandori moghaddam samanesadat hosseini tayebe nazari akbar gazmeh

in this work, cofe2o4 nanoparticles have been prepared by co-precipitation technique. the synthesized cofe2o4 nanoparticles were applied in the preparation of cofe2o4/polyacrylonitrile fiber nanocomposites by the electrospinning process. the prepared nanoparticles and nanofibers were characterized using the scanning electron microscopy (sem) and x-ray diffraction methods. the results manifested...

Journal: :international journal of nano dimension 0
s. rostamzadehmansoor department of chemistry, science and research branch, islamic azad university, tehran, iran. m. s. sadjadi department of chemistry, science and research branch, islamic azad university, tehran, iran. k. zare department of chemistry, science and research branch, islamic azad university, tehran, iran.

sio2-coated cobalt ferrite (cofe2o4) nanoparticles were obtained by the hydrolysis of tetraethylorthosilicate in the presence of cofe2o4 nanoparticles in co-precipitation. the effects of sio2coating on the magnetic properties of cofe2o4 nanoparticles were investigated. the structural, morphological and magnetic properties of as-prepared sample were characterization by x-ray diffraction (xrd), f...

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