Direct Fabrication of Monodisperse Silica Nanorings
DOI 10 1021/acsami 6b00733 Corpus ID 84023 Direct Fabrication of Monodisperse Silica Nanorings from Hollow SpheresA Template for Core Shell Nanorings article Zhong2016DirectFO title= Direct Fabrication of Monodisperse Silica Nanorings from Hollow SpheresA Template for Core Shell Nanorings author= Kuo Zhong and J Li and L Liu and W Brullot and M Bloemen and A Volodin
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Ag Dewetting in Cu Ag Monodisperse Core–Shell
We report on the synthesis of monodisperse Cu and Cu Ag nanocrystals Using the same synthetic procedure in three different temperature ranges Cu Ag show very different stability pathways which we interpret as three different growth mechanisms galvanic displacement at low temperature metal assisted growth and overgrowth of Ag at high
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Fabrication and characterization of monodisperse zinc
The submicrometer monodisperse zinc sulfide ZnS hollow spheres were synthesized by gamma ray irradiation at room temperature using monodisperse poly styrene methyl methacrylate acrylic acid PSMA latex spheres as the templates X ray diffraction XRD spectroscopy transmission electron microscopy thermogravimetric analysis and UV vis spectroscopy were used to characterize these
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Fabrication of monodisperse zirconia coated core–shell and
The monodisperse zirconia coated polystyrene core–shell spheres were prepared in mixed solvents The influence of the different catalyst with deionized water or ammonia and the volume fraction of acetonitrile in the mixture were investigated systematically with TEM and SEM
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Microfluidic preparation of monodisperse polymeric
In addition the physical features of the hybrid particles with core shell structure provides a high surface area controllable morphology and roughness 16 17 18 19 protection and encapsulation
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Research Article A Convenient and Templated Method
a series of monodisperse micrometer HTS were fabricated basedonalteringthesizeofPSAtemplatespheresreferencing to the previous study Preparation of Hollow Zirconia Spheres In the same experimental facility the di erent sizes of hollow zirconia sphereswithcontrollablediametersweresynthesizedfollow ing the same procedure mentioned above
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Fabrication of copper II coated magnetic core shell
In the next step to prepare the core–shell nanoparticles silica coating was done under the Stober process Then the core–shell nanoparticles have been modified by isatoic anhydride Scheme 1
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Fabrication of poly o anisidine coated silica core–shell
In this work silica/poly o anisidine POA core–shell structured microspheres were synthesized by coating the silica core surface with POA with a help of a chemical grafting agent N 3 trimethoxylsilyl propyl aniline The synthesized silica microspheres were then applied as a polymer/inorganic composite particle based electrorheological ER fluid
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The preparation and properties of monodisperse core shell
The monodisperse core shell silica magnetic microspheres MMS were synthesized by sol–gel method gelling in the emulsion Optical microscope OM field emission scanning electron microscope FESEM nitrogen adsorption and desorption Brunauer Emmett Teller Procedure BET isotherms and Barrett Joyner Halenda BJH pore size distribution measurements X ray diffraction XRD energy
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Fabrication of copper II coated magnetic core shell
Fabrication of copper II coated magnetic core shell nanoparticles Fe 3 O 4 SiO 2 2 aminobenzohydrazide and investigation of its catalytic application in the
Get PriceMicrofluidic Assisted Fabrication of Monodisperse Core
core–shell microcapsules which are prepared from double emulsion droplets constructed using microfluidic devices Monodisperse microcapsules containing oxalic acid are prepared with a coe cient of variation CV size of <5 and the core material encapsulation e ciency of >90
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Direct Fabrication of Monodisperse Silica Nanorings from
We report a new type of nanosphere colloidal lithography to directly fabricate monodisperse silica SiO2 nanorings by means of reactive ion etching of hollow SiO2 spheres Detailed TEM SEM and AFM structural analysis is complemented by a model describing the geometrical transition from hollow sphere to ring during the etching process The resulting silica nanorings can be readily
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A Facile Synthesis and Characterization of Monodisperse
In this paper a facile sol–gel process for producing monodisperse spherical and nonaggregated pigment particles with a core/shell structure is reported Spherical silica particles 245 and 385 nm in diameter and Cr 2 O 3 α‐Fe 2 O 3 ZnCo 2 O 4 CuFeCrO 4 MgFe 2 O 4 and CoAl 2 O 4 pigments are selected as cores and shells respectively
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A new approach of fabricating monodisperse micrometer
The monodisperse micrometer hollow zirconia sphere was prepared in mixed solvents It was fabricated by using the preformed poly styrene acrylic acid PSA as template spheres which was mixed with zirconyl chloride octahydrate in ethanol solvent under steam treatment
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Fabrication of monodispersive nanoscale alginate–chitosan
Biopolymers such as chitosan and alginate are widely used for controlled drug delivery systems The present work aimed to develop a new protocol for preparation of monodisperse alginate coated chitosan nanoparticles at nanoscale Modifications of preparation protocol contain changing the pH of polymer solutions and adding extra centrifugation steps into the procedure
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Fabrication of copper II coated magnetic core shell
Fabrication of copper II coated magnetic core shell nanoparticles Fe 3 O 4 SiO 2 2 aminobenzohydrazide and investigation of its catalytic application in the
Get PriceFabrication of polystyrene–PbS core shell and hollow PbS
Uniform inorganic PbS coated polymer core shell and hollow PbS microspheres were prepared by an easy and economical approach Monodisperse polystyrene PS microspheres were used as templates as well as the core of the composite spheres lead sulfide shells were obtained through the reaction of lead acetate Pb CH 3 COO 2 and thioacetamide TAA at room temperature
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Highly Monodisperse Zirconia Coated Silica Spheres and
The synthesis consists of 1 preparing monodisperse silica spheres 2 coating the spheres with hydrated zirconia 3 aging the composites 4 calcining the composite at 1173 K and 5 leaching the silica with NaOH solution This process results in the formation of hollow zirconia spheres with a surface area of around 300 m2 g 1
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Silica‐Coated Metal NanoparticlesLiu2010Chemistry
For example Schüth and co workers used monodisperse silica coated gold nanoparticles 15 nm gold core 45 nm silica shell as templates for making double shelled Au SiO 2 ZrO 2 and then etching the silica inter layer in 1 M sodium hydroxide solution for 16 h Finally gold nanoparticle encapsulated zirconia nanocapsules were obtained for use
Get PriceFabrication of polystyrene–PbS core shell and hollow PbS
Uniform inorganic PbS coated polymer core shell and hollow PbS microspheres were prepared by an easy and economical approach Monodisperse polystyrene PS microspheres were used as templates as well as the core of the composite spheres lead sulfide shells were obtained through the reaction of lead acetate Pb CH3COO 2 and thioacetamide TAA at room temperature
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Fabrication of monodisperse nitrogen doped carbon
Fabrication of monodisperse nitrogen doped carbon double shell hollow nanoparticles for supercapacitors† Juyoung Yun Jaemoon Jun Jungsup Lee Jaehoon Ryu Kisu Lee Haejun Yu and Jyongsik Jang Nitrogen doped carbon double shell nanoparticles NC
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A convenient and templated method for the fabrication of
A simple and widely applicable methodology was presented to synthesize monodisperse micrometer hollow titania spheres HTS based on the templating method It was performed by
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Fabrication of hydroxyl group modified monodispersed
Fabrication of hydroxyl group modified monodispersed hybrid silica particles and the h SiO 2 /TiO 2 core/shell microspheres as high performance photocatalyst for dye degradation Shen ZY 1 Li LY Li Y Wang CC
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Fabrication of bifunctional core shell Fe 3 O 4 particles
Optical and magnetic properties of core shell Fe 3 O 4 Y 2 O 3 Tb 3 particles According to Li et al for the Y/Tb binary systems homogeneous nucleation of Tb OH CO 3 occurs in priority and then the precipitation of Y OH CO 3 largely proceeds via heterogeneous nucleation on already formed Tb OH CO 3 layer Therefore it was assumed that Tb OH CO 3 was firstly fully deposited 1 mol on
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Plasma assisted electrochemical synthesis of monodisperse
Therefore the uniform Au Ag core–shell NPs forms around 41 4 ± 3 8 nm of Au core under the experimental conditions In summary the proposed diffusion controlled growth by plasma assisted electrochemical synthesis via the continuous controlled addition of Au precursor can precisely tune the particle size in the range of 50–300 nm with a
Get PriceHighly Monodisperse Zirconia Coated Silica Spheres and
The synthesis consists of 1 preparing monodisperse silica spheres 2 coating the spheres with hydrated zirconia 3 aging the composites 4 calcining the composite at 1173 K and 5 leaching the silica with NaOH solution This process results in the formation of hollow zirconia spheres with a surface area of around 300 m2 g 1
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Synthesis and thermal stability of ZrO2 SiO2 core–shell
First the zirconia core particles were coated with silica seeds in a pre encapsulation step Second silica shells were grown stepwise with thicknesses of ∼26 ∼38 and ∼61 nm by adding TEOS in a modified Stöber approach The resulting core–shell structure was confirmed by HAADF STEM imaging
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Fabrication of Silica Shell Photonic Crystals through
As solvent is evaporated from a dispersion of these monodisperse core shell particles the PNIPAm cores shrink and the silica particles on the surface form a silica shell During this process the core shell particles self assemble into a close packed array PC The system is further condensed as the core is removed by calcination at high temperature
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Precise preparation of highly monodisperse ZrO2 SiO2 core
This paper describes a straightforward method to precisely prepare monodisperse ZrO2 SiO2 core–shell nanoparticles CSNs by sol–gel polymerization of TEOS in the presence of ZrO2 cores without additional capping agents We studied the morphology and composition of CSNs by Scanning Electron Microscopy SEM Transmission Electron Microscopy TEM and X ray Diffraction XRD
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A robust method for fabrication of monodisperse magnetic
A robust method for fabrication of monodisperse magnetic mesoporous silica nanoparticles with core shell structure as anticancer drug carriers Author links open overlay panel Mahsa Asgari a Meysam Soleymani a Taghi Miri a b Abolfazl Barati a Show more Share Cite
Get PriceMicrofluidic Assisted Fabrication of Monodisperse Core
core–shell microcapsules which are prepared from double emulsion droplets constructed using microfluidic devices Monodisperse microcapsules containing oxalic acid are prepared with a coe cient of variation CV size of <5 and the core material encapsulation e ciency of >90
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Precise preparation of highly monodisperse ZrO2 SiO2 core
This paper describes a straightforward method to precisely prepare monodisperse ZrO2 SiO2 core–shell nanoparticles CSNs by sol–gel polymerization of TEOS in the presence of ZrO2 cores without additional capping agents
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Monodisperse core shell structured magnetic mesoporous
The rational design and precise synthesis of multifunctional hybrid nanostructures with a tailored active core and a large dendritic modified mesoporous structured shell can promote catalysis energy storage and biological applications Here an oil water biphase stratification coating strategy has been developed to prepare monodisperse magnetic dendritic mesoporous silica core shell
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Ag Dewetting in Cu Ag Monodisperse Core–Shell
Ag Dewetting in Cu Ag Monodisperse Core–Shell Nanoparticles We report on the synthesis of monodisperse Cu and Cu Ag nanocrystals Using the same synthetic procedure in three different temperature ranges Cu Ag show very different stability pathways which we interpret as three different growth mechanisms galvanic displacement at low
Get PriceControllable fabrication of PS/Ag core shell shaped
Especially fabrication of noble metal coated latex core shell shaped nanostructures CSSNs is currently an attractive area of investigation The noble metal nanoshells grown on dielectric core particles are of great interest due to their tunable optical properties from ultraviolet to near infrared regions of the electromagnetic spectrum 8 13
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