نتایج جستجو برای: magnetic nanocomposites

تعداد نتایج: 352554  

2013
Rola Mansa Christian Detellier

Polymer-clay nanocomposites are highly sought-after materials, mainly due to their applicability in a variety of avenues. From the standpoint of the preparation of these nanocomposites, however, organic compatibility with clay and adherence to "green chemistry" concepts and principles can be limiting factors. As such, the objective was to prepare a biopolymer-modified clay nanocomposite using a...

In this paper, a series of BaLa­xGdxFe12-2xO19 (x=0.2, 0.4, 0.6 and 0.8)/PANI (polyaniline) nanocomposites synthesized for investigating the photocatalytic properties. Barium hexaferrite doped with La3+ and Gd3+ prepared via a sol-gel auto-combustion method and then the binary nanocomposites fabricated by the in situ polymerizati...

Journal: :Journal of nanobiotechnology 2016
Erick S Vasquez Jean M Feugang Scott T Willard Peter L Ryan Keisha B Walters

BACKGROUND Nanoparticles have emerged as key materials for developing applications in nanomedicine, nanobiotechnology, bioimaging and theranostics. Existing bioimaging technologies include bioluminescent resonance energy transfer-conjugated quantum dots (BRET-QDs). Despite the current use of BRET-QDs for bioimaging, there are strong concerns about QD nanocomposites containing cadmium which exhi...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2013
Jaehan Jung Xinchang Pang Chaowei Feng Zhiqun Lin

Cadmium telluride (CdTe) tetrapods were synthesized via multiple injections of the Te precursor by utilizing bifunctional ligands. Subsequently, tetrapod-shaped semiconducting inorganic-organic nanocomposites (i.e., P3HT-CdTe tetrapod nanocomposites) were produced by directly grafting conjugated polymer ethynyl-terminated poly(3-hexylthiophene) (i.e., P3HT-≡) onto azide-functionalized CdTe tetr...

Journal: :Nanoscale research letters 2016
Oksana V Makarchuk Tetiana A Dontsova Ihor M Astrelin

Magnetic composite sorbents based on saponite clays with different content of magnetite (2-7 wt%.) were synthesized. The samples were analyzed by X-ray diffraction methods, and it was found that the Fe3O4 in composites is in the nanorange. It has been shown that the magnetic nanocomposites have more developed microporosity and mesoporosity compared to saponite clay. The sorption properties of m...

Journal: :international journal of bio-inorganic hybrid nanomaterials 0

in this paper we report synthesis of fe2tio5-5a zeolite (z5a) nanocomposites with 5%, 10% and 20% weight percent of fe2tio5 in 5a zeolite in stearic acid media after calcination of the gel samples obtained at 600-900°c for 2 hrs. the powder x-ray diffraction (xrd) patterns have been used for characterization of the prepared samples. the scanning electron microscopy (sem) images and x-ray energy...

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...

2011
Małgorzata Nowostawska Serena A Corr Stephen J Byrne Jennifer Conroy Yuri Volkov Yurii K Gun'ko

BACKGROUND The use of silica coated magnetic nanoparticles as contrast agents has resulted in the production of highly stable, non-toxic solutions that can be manipulated via an external magnetic field. As a result, the interaction of these nanocomposites with cells is of vital importance in understanding their behaviour and biocompatibility. Here we report the preparation, characterisation and...

2006
Zhanhu Guo Sung Park H. Thomas Hahn

Magnetic nanoparticles (NPs) have attracted much interest due to their special physicochemical properties such as enhanced magnetic moment and coercivity different from the bulk and atomic counterparts. Incorporation of the inorganic NPs into a polymer matrix has extended the particle applications such as in high-sensitivity chemical gas sensors due to the advantages of polymeric nanocomposites...

Journal: :Catalysis Letters 2021

Nanocomposites of metal oxides with graphene oxide and other carbon materials have shown superior catalytic activities in many important chemical reactions. A systematic investigation the effect Fe, Co, Ni, Cu, and Zn, on sulfonated (GO) is detailed in present paper. The nanocomposites GO were prepared under carefully chosen conditions so that content nanocomposites remains similar. used ...

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