نتایج جستجو برای: nps were synthesized by sol

تعداد نتایج: 8212014  

2012
Kamyar Shameli Mansor Bin Ahmad Seyed Davoud Jazayeri Sajjad Sedaghat Parvaneh Shabanzadeh Hossein Jahangirian Mahnaz Mahdavi Yadollah Abdollahi

The roles of green chemistry in nanotechnology and nanoscience fields are very significant in the synthesis of diverse nanomaterials. Herein, we report a green chemistry method for synthesized colloidal silver nanoparticles (Ag NPs) in polymeric media. The colloidal Ag NPs were synthesized in an aqueous solution using silver nitrate, polyethylene glycol (PEG), and β-D-glucose as a silver precur...

TiO2-SiO2 core-shell particles include of monodisperse silica core and nanostructured titania shell were synthesized by a multi-step coating process. The monodisperse silica spheres were synthesized by Stöber method and titania shell was obtained of a colloidal sol prepared by a hydrolysis–condensation reaction. The titania sol was deposited on monodisperse silica spheres by a multi-step coatin...

The aim of the research work was to chemically modify guar gum(GG) as a pH sensitive co-polymer and formulating intestinal targeting ESO nanoparticles (NPs) using the synthesized co-polymer. Poly acrylamide-grafted-guar gum (PAAm-g-GG) co-polymer was synthesized by free radical polymerization. Chemical modification of PAAm-g-GG by alkaline hydrolysis results in formation of a pH-sensitive co-po...

2008
P. Basto F. Gu L. Zhang C. Cannizzaro R. Langer O. Farokhzad R. Karnik

We report the use of microfluidic rapid mixing using hydrodynamic flow focusing to control the self-assembly of polymeric nanoparticles (NPs) that can be used for drug delivery. PLGA-PEG polymeric NPs and PLGA-lipid hybrid NPs were synthesized through nanoprecipitation—a process that involves dilution of a block copolymer from a solvent to an anti-solvent resulting in the precipitation of NPs. ...

The aim of the research work was to chemically modify guar gum(GG) as a pH sensitive co-polymer and formulating intestinal targeting ESO nanoparticles (NPs) using the synthesized co-polymer. Poly acrylamide-grafted-guar gum (PAAm-g-GG) co-polymer was synthesized by free radical polymerization. Chemical modification of PAAm-g-GG by alkaline hydrolysis results in formation of a pH-sensitive co-po...

Journal: :Catalysts 2022

Fe2O3/Mn2O3 nanocomposites and impregnated porous silicates (Fe2O3/Mn2O3@SiO2 [FMS]) were prepared investigated as catalytic adsorbents. The catalysts applied for cationic anionic dye pollutants in the adsorption, Fenton reaction, photocatalysis processes at a pH of 7. nanoparticles (FM-NPs) using co-precipitation method SiO2 by sol–gel process. synthesized materials characterized various sophi...

2014
S. Munusamy K. Bhakyaraj L. Vijayalakshmi A. Stephen V. Narayanan

In the present work, we have investigated synthesis of cerium oxide nanoparticles (CeO2 NPs) using Curvularia lunata culture filtrate. The synthesized CeO2 NPs were characterized by TG/DTA, XRD, Raman, PL, FTIR, UV-visible spectroscopy and TEM analyses. The synthesized nanoparticles retained the cubic structure, which was confirmed by X-ray diffraction studies. UV-visible spectrum exhibited a w...

Journal: :international journal of nano dimension 0
h. bakhtiari department of chemistry, azad university, north tehran branch, tehran, iran. q. s. manuchehri naeini department of chemistry, azad university, north tehran branch, tehran, iran. s. haghighi department of chemistry, azad university, north tehran branch, tehran, iran. m. emamzadeh department of chemistry, azad university, north tehran branch, tehran, iran.

the composite powders of barium-magnesium ferrite were prepared using sol-gel auto-combustion and microwave methods. the crystal structure and the shape of nanocomposites have been compared. x-ray diffraction (xrd), scanning electron microscope (sem) and vibrating sample magnetometer (vsm) were used to investigate the structural, morphological and magnetic properties of nanopowder. the formatio...

Journal: :journal of nanostructures 2015
b. kaleji m. mousaei h. halakouie a. ahmadi

in this work firstly zno nanoparticles were synthesized via a simple precipitation method. at the second step titanium dioxide and silicon dioxide shell were synthesized on the core. for preparation zno-tio2-sio2 the sol product was calcinated at 500 ºc for 2h. properties of the product were examined by x-raydiffraction pattern (xrd), scanning electron microscope (sem) and fourier transform inf...

Journal: :international journal of nanoscience and nanotechnology 2015
m. nadafan r. malekfar z. dehghani

in this research the composition of polyurethane closed cell (pucc) with two different concentrations of sio2 nanoparticles (1.0 and 2.0 wt%) have been prepared. optical microscopy and sem imaging, watering uptake, ftir and raman spectroscopy of the synthesized samples were carried out. the optical microscopy imaging of samples showed differences in the appearance of matrix produced by applying...

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