Sol-gel process of alkoxysilane in emulsifier-involved aqueous emulsions: A one-pot synthetic route to emulsions of core-shell composite particles and their applications

2012 ◽  
Vol 128 (6) ◽  
pp. 4237-4244 ◽  
Author(s):  
Lin Niu ◽  
Zhengbin Xia ◽  
Liang Lei ◽  
Yanhong Zhang ◽  
Li Zhong
Keyword(s):  
Sol Gel ◽  
Composite Particles ◽  
Core Shell ◽  
Synthetic Route ◽  
One Pot ◽  
Sol Gel Process ◽  
Shell Composite

Controlled synthesis of V2O5/MWCNT core/shell hybrid aerogels through a mixed growth and self-assembly methodology for supercapacitors with high capacitance and ultralong cycle life

2015 ◽  
Vol 3 (30) ◽  
pp. 15692-15699 ◽  
Author(s):  
Yingjie Wu ◽  
Guohua Gao ◽  
Huiyu Yang ◽  
Wenchao Bi ◽  
Xing Liang ◽  
...  
Keyword(s):  
Self Assembly ◽  
Sol Gel ◽  
Three Dimensional ◽  
Cycle Life ◽  
Core Shell ◽  
Controlled Synthesis ◽  
One Pot ◽  
High Capacitance ◽  
Sol Gel Process ◽  
Hybrid Aerogels

Three-dimensional V2O5/MWCNT core/shell hybrid aerogels were controllably synthesized through a mixed growth and self-assembly methodology in a one-pot sol–gel process.

Selective basic etching of bifunctional core–shell composite particles for the fabrication of organic functionalized hollow mesoporous silica nanospheres

2016 ◽  
Vol 40 (1) ◽  
pp. 825-831 ◽  
Author(s):  
Zhenhui Liu ◽  
Lianxi Chen ◽  
Xinshan Ye ◽  
Huogen Yu ◽  
Jie Li ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Sol Gel ◽  
Etching Process ◽  
Composite Particles ◽  
Core Shell ◽  
Silica Nanospheres ◽  
Hollow Mesoporous Silica ◽  
Shell Composite ◽  
Mesoporous Silica Nanospheres

Bifunctional particles were synthesized by a two-step sol–gel reaction of organosilanes, and hollow or rattle-type structures could be fabricated via the basic etching process.

Physico‐mechanical properties and flammability of PUR/PIR foams containing expandable graphite core‐shell composite particles

2019 ◽  
Vol 40 (10) ◽  
pp. 3805-3813 ◽  
Author(s):  
Kamila Gosz ◽  
Józef Haponiuk ◽  
Aleksandra Mielewczyk‐Gryń ◽  
Łukasz Piszczyk
Keyword(s):  
Mechanical Properties ◽  
Composite Particles ◽  
Expandable Graphite ◽  
Core Shell ◽  
Shell Composite

Metal supported catalysts obtained by sol-gel in the hydrosilylation of phenylacetylene with R3SiH organosilanes (R3 = Ph3, Ph2Me, and PhMe2)

2000 ◽  
Vol 78 (11) ◽  
pp. 1491-1495 ◽  
Author(s):  
Rafael Jiménez ◽  
Juan Manuel López ◽  
Jorge Cervantes
Keyword(s):  
Specific Activity ◽  
Supported Catalysts ◽  
Sol Gel ◽  
Synthetic Route ◽  
Catalytic Systems ◽  
Hydrosilylation Reaction ◽  
Solid Catalysts ◽  
Sol Gel Process ◽  
Cis And Trans ◽  
Inorganic Matrices

The hydrosilylation reaction of phenylacetylene, generated on the surface of solid catalysts (such as Pt and Ru) supported on inorganic matrices such as MgO obtained by the sol-gel process, yields vinylsilanes as the main products. The products' distribution, specific activity, and turnover reactions were determined for the case of the hydrosilylation reaction of PhC = CH with R3SiH (R = Ph3, Ph2Me, and PhMe2). For Ph3SiH and Ph2MeSiH, the presence of β-trans and α isomers is observed. Addition of PhMe2SiH to phenylacetylene leads to the formation of β (cis and trans) and α isomers. These catalytic systems provide a new synthetic route to Si—C bond formation.Key words: Vinylsilanes, sol-gel catalysts, hydrosilylation and phenylacetylene.

Preparation and Microwave-Absorption Property of SiO2-SiC-Based Composites

2010 ◽  
Vol 434-435 ◽  
pp. 231-234
Author(s):  
Li Guan ◽  
Bing Bing Fan ◽  
Ming Liang Li ◽  
He Jing Wen ◽  
Kai Li ◽  
...  
Keyword(s):  
Solid State ◽  
Microwave Absorption ◽  
Solid State Reaction ◽  
Sol Gel ◽  
Composite Particles ◽  
Network Analyzer ◽  
Epoxide Resin ◽  
Maximum Reflectivity ◽  
Sol Gel Process ◽  
Sic Composites

SiO2-SiC composite particles were prepared using a sol-gel process. BaTiO3 powders were synthesize through solid-state reaction. They were mixed as microwave absorbents with Fe3O4 powders to obtain the complex absorption. Epoxide resin (EP) was used as matrix and solidified with the mixtures. The techniques of DSC-TG, XRD were used to characterize the composite particles and the obtained compacts. A vector network analyzer was used to measure the reflectivity of the SiO2-SiC-based composites. The effects of the aborbents’ contents on the reflection of the microwave absorption materials were disscussed. It was found that SiO2-SiC composites could be prepared using sol-gel process and BaTiO3 powders could be synthesize through solid-state reaction. The results indicated that SiO2-SiC composite is contribute to absorb microwave, where SiO2-SiC: BaTiO3: Fe3O4 = 6:2:2 (vol %), the frequency region in which the maximum reflectivity is more than -10 dB is 5.4-7.6 GHz.

Synthesis of Hollow Titania Photocatalytic Particles Using Yeast as Templates

2013 ◽  
Vol 699 ◽  
pp. 126-132 ◽  
Author(s):  
Toshiyuki Nomura ◽  
Syota Tanii ◽  
Hayato Tokumoto ◽  
Yasuhiro Konishi
Keyword(s):  
Pore Diameter ◽  
Sol Gel ◽  
Solid Particles ◽  
Core Shell ◽  
Average Pore ◽  
Inorganic Particles ◽  
Sol Gel Process ◽  
Yeast Powder ◽  
Titania Precursor ◽  
Hydrolysis Of

Hollow inorganic particles have attracted considerable interest for a variety of applications. In this work, yeast powder was used as a bio-template to fabricate yeast/titania core-shell spheres. A titania precursor was deposited via the hydrolysis of tetraisopropyl titanate. Triethanolamine was employed to control the reaction rate of the sol-gel process. The hollow titania particles with a diameter of approximately 4 m and a thickness of approximately 54 nm were successfully obtained after calcination of the core-shell spheres at 700 °C. The crystal structure of the particles was anatase. The specific surface area and the average pore diameter were 21.4 m2/g and 1.6 nm, respectively. The photocatalytic activity of the hollow particles was higher compared with that of solid particles.

Hydroxyapatite/Anatase Photocatalytic Core–Shell Composite Prepared by Sol‒Gel Processing

2018 ◽  
Vol 63 (2) ◽  
pp. 254-260 ◽  
Author(s):  
T. V. Khamova ◽  
O. V. Frank-Kamenetskaya ◽  
O. A. Shilova ◽  
V. P. Chelibanov ◽  
A. M. Marugin ◽  
...  
Keyword(s):  
Sol Gel ◽  
Core Shell ◽  
Gel Processing ◽  
Shell Composite

Controlled detonation synthesis of nano Fe-based oxides/SiO2 core-shell composite particles

2020 ◽  
Vol 740 ◽  
pp. 137016
Author(s):  
Xiaohong Wang ◽  
Liang Guo ◽  
Xiaojie Li ◽  
Xueqi Li ◽  
Lingjie Kong ◽  
...  
Keyword(s):  
Composite Particles ◽  
Core Shell ◽  
Detonation Synthesis ◽  
Shell Composite
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