Thin Silica Film with a Network Structure as Prepared by Surface Sol-Gel Transcription on the Poly(styrene-b-4-vinylpyridine) Polymer Film

2003 ◽  
Vol 32 (4) ◽  
pp. 352-353 ◽  
Author(s):  
Norifumi Fujita ◽  
Hideyuki Otsuka ◽  
Atsushi Takahara ◽  
Seiji Shinkai
Keyword(s):  
Polymer Film ◽  
Network Structure ◽  
Sol Gel ◽  
Silica Film ◽  
Thin Silica Film

Characterization of ordered mesoporous films on silicon (001) surface using X-ray and electron diffraction

2005 ◽  
Vol 38 (1) ◽  
pp. 211-216 ◽  
Author(s):  
Pang-Hung Liu ◽  
Kuei-Jung Chao ◽  
Xing-Jian Guo ◽  
Kuo-Ying Huang ◽  
Yen-Ru Lee ◽  
...  
Keyword(s):  
Electron Diffraction ◽  
Sol Gel ◽  
Dip Coating ◽  
Silica Film ◽  
Continuous Film ◽  
X Ray ◽  
Transmission Electron ◽  
Ordered Mesoporous ◽  
Direction Dependence

A continuous silica film with well aligned mesochannels parallel to the Si(001) surface was found to be formed through sol–gel dip-coating of a silica precursor with nonionic ethylene oxide surfactant. Two two-dimensional mesoporous structures in centered and non-centered rectangular symmetries and with the short axes of elongated ellipsoidal pores normal to the surface were observed by X-ray and electron diffraction. Detailed transmission electron microscopy investigations were employed to view the direction dependence of the channel or pore packing in the continuous film.

Magic sol–gel silica films encapsulating hydrophobic and hydrophilic quantum dots for white-light-emission

RSC Advances ◽  
2014 ◽  
Vol 4 (39) ◽  
pp. 20358-20363 ◽  
Author(s):  
Ping Yang ◽  
Hsueh-Shin Chen ◽  
Junpeng Wang ◽  
Quande Che ◽  
Qian Ma ◽  
...  
Keyword(s):  
Quantum Dots ◽  
White Light ◽  
Light Emission ◽  
Sol Gel ◽  
Silica Film ◽  
White Light Emission ◽  
Silica Films ◽  
White Leds ◽  
3 Dimensional ◽  
Dimensional Surface

A sol–gel silica film was fabricated by a spraying approach on various substrates with a 3-dimensional surface for white LEDs.

The Effect of Carbonization Temperature on Carbon Aerogels Structure

2020 ◽  
Vol 842 ◽  
pp. 182-185
Author(s):  
Sha Sha Wang ◽  
Yue Long Xu ◽  
Li Hui Zhang ◽  
Zhen Fa Liu
Keyword(s):  
Pore Size ◽  
Network Structure ◽  
Sol Gel ◽  
Carbonization Temperature ◽  
Carbon Aerogels ◽  
Sem Images ◽  
Resorcinol Formaldehyde ◽  
Graphitization Degree ◽  
Adsorption Amount ◽  
Xrd Patterns

Phloroglucinol–resorcinol–formaldehyde (PRF) carbon aerogels were synthesized by sol–gel reaction. The results of condition of shrinkage showed a degree of crosslinking more obvious with the increasing of the carbonization temperature. CA900 displays the highest adsorption amount and the biggest loops, as well as an increase in pore size and volume in comparison to the others samples. The SEM images of carbon aerogels under different carbonization temperature possess closer network structure and excellent connectivity, the holes between the network are abundant. The XRD patterns show that the high carbonization temperature can enhance the graphitization degree of carbon aerogels.

Preparation and Characterization of SiO2/VO2 Composite Particles

2010 ◽  
Vol 152-153 ◽  
pp. 797-800
Author(s):  
Ai Hong Bi ◽  
Jin Hua Zhu
Keyword(s):  
Sol Gel ◽  
Silica Film ◽  
Composite Particles ◽  
Basic Study ◽  
Coating Agent ◽  
Visible Transmittance ◽  
Smart Coatings ◽  
Structure Surface ◽  
Composition Structure

In order to enhance the visible transmittance, a compact silica film was successfully coated on the surface of VO2 particles by the sol-gel method, using sodium silicate as the coating agent and hydrochloric acid as the neutralization agent. The composition, structure, surface bonding mode and the visible transmittance of the products were characterized by means of XRD, SEM, FTIR and UV-Vis. The results showed that SiO2/VO2 composite particles can produced by this method, and the visible transmittance was higher than the pure VO2. It was a basic study in the applications of the smart coatings based on VO2 powders.

Preparation of transparent ultrahydrophobic silica film by sol–gel process

2010 ◽  
Vol 8 (1) ◽  
pp. 53-60 ◽  
Author(s):  
Guojian Wang ◽  
Jiayun Yang ◽  
Quan Shi
Keyword(s):  
Sol Gel ◽  
Silica Film ◽  
Sol Gel Process
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