scholarly journals Preparation of Self-Standing, Submillimeter-Thick Porous Titania Films with Anatase Nanocrystallites Using Evaporation-Induced Self-Assembly

2007 ◽  
Vol 17 (1) ◽  
pp. 333-333
Author(s):  
Hui-suk Yun ◽  
Haoshen Zhou ◽  
Itaru Honma
2002 ◽  
Vol 726 ◽  
Author(s):  
G.J. de A.A. Soler-Illia ◽  
D. Grosso ◽  
E. L. Crepaldi ◽  
F. Cagnol ◽  
C. Sanchez

AbstractMesostructured TiO2-surfactant hybrid xerogels and thin films are prepared by Evaporation-Induced Self Assembly (EISA). These organized structures are reproducibly formed through cooperative self-assembly between hydrophilic Ti-oxo species and a micellar template after selective solvent evaporation from ethanol/HCl/H2O media. The construction of these networks is tailored by tuning the hydrolysis-condensation of the metallic cations with the self-assembly of the organic counterparts (“hydrophilic matching” approach). The hybrids present hexagonal mesostructure (p6m). The formation kinetics of the mesophase is followed by SAXS, interferometry and mass spectrometry (MS) analysis of the vapor phase. An adequate thermal treatment of the organized hybrids leads to high surface (150-400m2 g-1) phosphorus-free mesoporous titania films or powders, with walls containing anatase nanocrystallites. This approach can be successfully extended to other non-silicate based meso-structured materials.


Nanoscale ◽  
2012 ◽  
Vol 4 (21) ◽  
pp. 6814 ◽  
Author(s):  
Hidenobu Nakao ◽  
Shiho Tokonami ◽  
Taichi Hamada ◽  
Hiroshi Shiigi ◽  
Tsutomu Nagaoka ◽  
...  

Soft Matter ◽  
2016 ◽  
Vol 12 (40) ◽  
pp. 8285-8296 ◽  
Author(s):  
Shaofu Zhang ◽  
Weiling Luan ◽  
Qixin Zhong ◽  
Shaofeng Yin ◽  
Fuqian Yang

2003 ◽  
Vol 32 (1-3) ◽  
pp. 387-395 ◽  
Author(s):  
Mikihiro Nomura ◽  
Ben Meester ◽  
Joop Schoonman ◽  
Freek Kapteijn ◽  
Jacob A. Moulijn

2015 ◽  
Vol 17 (41) ◽  
pp. 27653-27657 ◽  
Author(s):  
Jeffrey E. Chen ◽  
Hong-Yuan Lian ◽  
Saikat Dutta ◽  
Saad M. Alshehri ◽  
Yusuke Yamauchi ◽  
...  

This study illustrates the directed self-assembly of mesoporous TiO2 with magnetic properties due to its colloidal crystal structure with Fe3O4.


2010 ◽  
Vol 5 (1) ◽  
pp. 15-22 ◽  
Author(s):  
Indriana Kartini ◽  
Gao Qing Lu

The role of the synthesis parameters (the molar ratio of template, isopropyl alcohol, acetylacetone, and water with respect to titanium(IV) tetraisopropoxide) has been thoroughly investigated to understand their effects on the mesostructures and the formation of crystalline phases of mesoporous titania xerogels in less water condition (no added water) at 60 oC. The resultant mesoporous titania are more likely to have worm-hole like structure as the dominant stable structure. The template appears to play no significant role in structure directing at mesophase level. However, increasing the amount of the template delays the formation of anatase crystalline phase   Keywords: mesoporous titania, templating synthesis, anatase, evaporation-induced self-assembly


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