نتایج جستجو برای: core shell sio2 fe3o4gold

تعداد نتایج: 268406  

2011
N. Murillo-Cremaes E. Taboada C. Domingo A. Roig

Fabrication of monodisperse pure silica and core-shell nanospheres (Fe2O3@SiO2 and Fe2O3/QD@SiO2) was done in straight forward one-pot method combining sol-gel chemistry and supercritical fluids. For the core-shell materials, preformed nanoparticles stabilized in hexane were dispersed in a sol containing a silicon alkoxide, water and acetone as the solvent. The precursor solution was introduced...

2016
Shilong Wang Rongrong Zhu Yechang Qian

In article 1600229, Shilong Wang, Rongrong Zhu, Yechang Qian, and co-workers investigate the anti-metastatic and anti-angiogenic effects of SiO2@LDH (LDH: layered double hydroxide) loaded with etoposide (VP16). SiO2@LDH has very suitable qualities as drug delivery agent and enhances the anti-metastatic action of VP16 both in vitro and in vivo. Enhanced anti-angiogenic efficacy is also proven wh...

Dariush Norouzian, Farzin Roohvand, Malihe Keramati, Masoud Seyedinkhorasani, Reza Ahangari Cohan, Saeid Taghavi Fardood,

Background: Protein purification is the most complicated issue in the downstream processes of recombinant protein production; therefore, improved selective purification methods are important. Affinity-based protein purification method using His-tag and Ni-NTA resins is one of the most common strategies. MNPs can be used as a beneficial alternative for Ni-NTA resins. However, there is no data on...

2006
M J ROSEMARY V SURYANARAYANAN IAN MACLAREN

We report the synthesis of stearate functionalized nanobubbles of SiO2 with a few aniline molecules inside, represented as C6H5NH2@SiO2@stearate, exhibiting fluorescence with red-shifted emission. Stearic acid functionalization allows the materials to be handled just as free molecules, for dissolution, precipitation, storage etc. The methodology adopted involves adsorption of aniline on the sur...

2013
Yongchao Li Hongpu Ma Bozhi Ren Tielong Li

Core-shell silica-coated Fe(0) nanoparticles (Fe@SiO2) were prepared in one-step synthesis by aqueous reduction combined with modified Stöber method. The as-prepared Fe@SiO2 were then used for simultaneous removal of Cr(VI) and Cd(II) from aqueous solution. Batch tests indicated that Fe@SiO2 exhibited high removal capacity toward Cr(VI) and Cd(II). Cr(VI) was removed by Fe@SiO2 through reductio...

Journal: :Coatings 2023

In recent years, core–shell composite particles with organic polymer as the core and inorganic SiO2 shell have attracted widespread attention prompted robust scientific endeavors. The encapsulation of can endow a variety important properties, is great significance for synthesis multi–functional materials, having favorable application prospects in coating, polishing, medical, optical, magnetic, ...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2006
Masih Darbandi Weigang Lu Jiye Fang Thomas Nann

Spherical PbSe@SiO2 nanoparticles have been successfully synthesized within reverse micelles via metal alkoxide hydrolysis and condensation within a microemulsion system. These core-shell nanoparticles were characterized by transmission electron microscopy (TEM), NIR absorption spectroscopy, energy-dispersive X-ray analysis, and TEM electron diffractions. It shows that the obtained core-shell s...

Journal: :Catalysts 2021

Core-shell materials are promising functional for fundamental research and industrial application, as their properties can be adapted specific applications. In particular, particles featuring iron or oxide core material relevant since they combine magnetic catalytic properties. The addition of an SiO2 shell around the introduces additional design aspects, such a pore structure surface functiona...

Journal: :The journal of physical chemistry. B 2005
Bo Lei Chao Li Daihua Zhang Song Han Chongwu Zhou

We report our recent study on the pulsed laser deposition process in the synthesis of colossal magnetoresistive MgO/LaCaMnO3 and MgO/LaSrMnO3 core-shell nanowires. A highly efficient process has been developed by depositing an epitaxial layer of manganite onto randomly oriented MgO nanowires grown on SiO2/Si substrates. In addition, in-depth studies revealed that the sample-target distance play...

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