The effect of thermal and vapor annealing treatments on the self-assembly of TiO2/PS-b-PMMA nanocomposites generated via the sol–gel process

2009 ◽  
Vol 20 (22) ◽  
pp. 225603 ◽  
Author(s):  
J Gutierrez ◽  
A Tercjak ◽  
I Garcia ◽  
I Mondragon
Keyword(s):  
Self Assembly ◽  
Sol Gel ◽  
The Self ◽  
Sol Gel Process ◽  
Vapor Annealing

Template-Free Synthesis of Ellipsoidal Silica Nanoparticles

2012 ◽  
Vol 1386 ◽  
Author(s):  
Henan Zhang ◽  
Daniel L. Akins
Keyword(s):  
Surface Tension ◽  
Self Assembly ◽  
Sol Gel ◽  
The Self ◽  
Micellar System ◽  
Synthesis Conditions ◽  
Spherical Silica ◽  
Sol Gel Process ◽  
Spherical Silica Particles ◽  
Template Free

ABSTRACTFor a sol-gel process occurring in a water/oil (w/o) system, the self-assembly of silica nuclei can be controlled by close control of synthesis conditions. We have synthesized ellipsoidal or spherical silica particles by a template-free scheme that involves controlling surface tension on silica nuclei through via use of different volume ratios of a w/o micellar system.

Perovskite Particles from Phytoplankton

2005 ◽  
Vol 873 ◽  
Author(s):  
Michael R. Weatherspoon ◽  
Shawn M. Allan ◽  
Christopher S. Gaddis ◽  
Ye Cai ◽  
Michael S. Haluska ◽  
...  
Keyword(s):  
Self Assembly ◽  
Sol Gel ◽  
The Self ◽  
Displacement Reaction ◽  
Nanocrystalline Coating ◽  
Sol Gel Process ◽  
Micro Organisms

AbstractControlled-shape BaTiO3-based microparticles were synthesized with the use of diatom microshells (frustules) as templates. The SiO2-based frustules of Aulacoseira diatoms were first converted into MgO-based replicas via a gas/solid displacement reaction at 900°C. A BaTiO3 coating was then applied to the MgO-bearing frustules by a sol-gel process. After firing at 700°C for 1.5 h, a conformal nanocrystalline coating of BaTiO3was generated on the surfaces of the MgO-bearing frustules. The underlying MgO scaffolds were then selectively dissolved away to yield freestanding 3-D BaTiO3-based replicas of the original Aulacoseira diatom frustules. This work demonstrates that microparticles with well-controlled 3-D morphologies and non-natural multicomponent ceramic compositions can be produced by merging the self-assembly ability of biomineralizing micro-organisms with synthetic chemical tailoring.

scholarly journals Embedded polyhedral SiO2/castor oil-based WPU shell-core hybrid coating via self-assembly sol-gel process

2020 ◽  
Vol 141 ◽  
pp. 105540
Author(s):  
Linlong Meng ◽  
Haoxin Zhu ◽  
Bing Feng ◽  
Zhenhua Gao ◽  
Di Wang ◽  
...  
Keyword(s):  
Self Assembly ◽  
Castor Oil ◽  
Sol Gel ◽  
Hybrid Coating ◽  
Sol Gel Process

Recyclable (Fe3O4-NaYF4:Yb,Tm)@TiO2 nanocomposites with near-infrared enhanced photocatalytic activity

2018 ◽  
Vol 47 (5) ◽  
pp. 1666-1673 ◽  
Author(s):  
Yan Lv ◽  
Lin Yue ◽  
Qian Li ◽  
Baoyi Shao ◽  
Sen Zhao ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Self Assembly ◽  
Near Infrared ◽  
Sol Gel ◽  
Design And Synthesis ◽  
Sol Gel Process

Herein, the design and synthesis of a multifunctional (Fe3O4-NaYF4:Yb,Tm)@TiO2 photocatalyst through a facile sol–gel process combined with electrostatic self-assembly has been reported.

scholarly journals Boronate sol–gel method for one-step fabrication of polyvinyl alcohol hydrogel coatings by simple cast- and dip-coating techniques

RSC Advances ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 86-94 ◽  
Author(s):  
Ryuhei Nishiyabu ◽  
Yuki Takahashi ◽  
Taro Yabuki ◽  
Shoji Gommori ◽  
Yuki Yamamoto ◽  
...  
Keyword(s):  
Polyvinyl Alcohol ◽  
Self Assembly ◽  
Sol Gel ◽  
Dip Coating ◽  
The Self ◽  
Gel Method ◽  
Sol Gel Method ◽  
Hydrogel Coatings ◽  
One Step

The self-assembly of polyvinyl alcohol (PVA) and benzene-1,4-diboronic acid (DBA) is employed as a sol–gel method for one-step fabrication of hydrogel coatings with versatile functionalities.

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.

Photocatalytic Activity of Pd Doped Tin Dioxide Inverse Opal Films

2012 ◽  
Vol 534 ◽  
pp. 135-140 ◽  
Author(s):  
Yang Liu ◽  
Bo Li ◽  
You Wei Yao ◽  
Jing Jing Gao ◽  
Zhen Dong Liu ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Self Assembly ◽  
Tin Dioxide ◽  
Uv Light ◽  
Sol Gel ◽  
The Self ◽  
Inverse Opal ◽  
Polystyrene Microsphere ◽  
Assembly Technique

Inverse opal films (IOFs) of SnO2 doped with Pd were prepared by the self-assembly technique using polystyrene microsphere (PS sphere) as template in combination with a sol-gel method. The photocatalysis properties of SnO2 IOFs were estimated through measuring the rate of the degradation of methylene blue (MB). The result shows that SnO2 IOFs have good photocatalytic activity, the solution of MB was degradated over 60% in 4 hours when it was dipped in SnO2 IOFs and exposed in the UV light. The addition of Pd in SnO2 IOFs improved the photocatalytic activity of the films and the degradation of MB can exceed 80% with the same condition. This sort of SnO2 IOFs doped with Pd indicated a potential application in photocatalysis field.

Characterization of Medium-range Order in Self-Assembled Organic-inorganic Hybrid by Fluctuation X-ray Microscopy

2006 ◽  
Vol 960 ◽  
Author(s):  
Lixin Fan ◽  
David Paterson ◽  
Ian McNulty ◽  
M. M. J. Treacy ◽  
Dushyant Kumar ◽  
...  
Keyword(s):  
Self Assembly ◽  
Sol Gel ◽  
Range Order ◽  
Inorganic Materials ◽  
Medium Range Order ◽  
X Ray ◽  
Sol Gel Process ◽  
Medium Range ◽  
Self Assembled

ABSTRACTThe control of formation and ordering of self assembled nanostructures, with medium- to long-range order, is a challenge that limits advances in many fields of nanotechnology. We have developed a technique, which we call fluctuation x-ray microscopy, that offers quantitative insight into medium-range correlations in disordered materials at nanometer- and larger-length scales. We examined the influence of sol-gel process variables on medium range order in PI-b-PEO/ aluminosilicate bulk using this technique. The nano-structuring of inorganic materials was directed by polymer self-assembly. The medium range correlation between the nanostructures in two hybrids was quantitatively examined and compared.

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