Fabrication of Ordered Porous Structures by Self-Assembly of Zeolite Nanocrystals

2000 ◽  
Vol 122 (14) ◽  
pp. 3530-3531 ◽  
Author(s):  
Limin Huang ◽  
Zhengbao Wang ◽  
Jinyu Sun ◽  
Lei Miao ◽  
Quanzhi Li ◽  
...  
Keyword(s):  
Self Assembly ◽  
Porous Structures ◽  
Ordered Porous

Self-Assembly of Meso- and Nanoparticles into 3d Ordered Arrays and its Applications

1999 ◽  
Vol 576 ◽  
Author(s):  
Byron Gates ◽  
Younan Xia
Keyword(s):  
Self Assembly ◽  
Colloidal Particles ◽  
Periodic Structures ◽  
Practical Method ◽  
Porous Structures ◽  
Inverse Opals ◽  
Ordered Arrays ◽  
Self Assembling ◽  
Silica Colloids ◽  
Ordered Porous

ABSTRACTThis presentation describes a simple and practical method for self-assembling meso- and nanoparticles into three-dimensionally ordered lattices (opals) over large areas, and the use of these lattices as templates in fabricating highly ordered porous structures such as inverse opals. This method has been applied to a variety of colloidal particles, including silica colloids and polymer beads with diameters in the range of˜50 nm to ˜50 μm. Templating against the 3D opaline lattices provides an effective route to inorganic-organic composite materials and inverse opals having 3D periodic structures.

Superhydrophobic polyaniline hollow spheres with mesoporous brain-like convex-fold shell textures

2015 ◽  
Vol 3 (38) ◽  
pp. 19299-19303 ◽  
Author(s):  
Ruixia Yuan ◽  
Huaiyuan Wang ◽  
Tuo Ji ◽  
Liwen Mu ◽  
Long Chen ◽  
...  
Keyword(s):  
Surface Energy ◽  
Phase Transfer ◽  
Hollow Spheres ◽  
Perfluorooctanoic Acid ◽  
Porous Structures ◽  
Low Surface Energy ◽  
Transfer Method ◽  
Ordered Porous

A novel micelle-mediated phase transfer method is developed to synthesize hollow polyaniline spheres with mesoporous brain-like convex-fold shell textures. High superhydrophobicity is achieved due to the highly ordered porous structures and low surface energy provided by perfluorooctanoic acid.

Smart Processing of Solid Electrolyte Dendrites with Ordered Porous Structures for Fuel Cell Miniaturizations

2011 ◽  
Vol 2011 (CICMT) ◽  
pp. 000017-000022
Author(s):  
Soshu Kirihara ◽  
Katsuya Noritake ◽  
Satoko Tasaki ◽  
Hiroya Abe
Keyword(s):  
Fuel Cell ◽  
Solid Electrolyte ◽  
Solid Electrolytes ◽  
Yttria Stabilized Zirconia ◽  
Porous Structures ◽  
Stabilized Zirconia ◽  
Coordination Numbers ◽  
Aspect Ratios ◽  
Micro Patterning ◽  
Ordered Porous

Solid electrolyte dendrites of yttria stabilized zirconia with spatially ordered porous structures were successfully fabricated for fuel cell miniaturizations by using micro patterning stereolithography. Micrometer order ceramic lattices with the coordination numbers 4, 6, 8 and 12 were propagated spatially in computer graphic space. Aspect ratios of the lattice diameters and lengths were designed between 1.0 and 2.0 to value the porosities in higher levels from 50 to 80 %. On the fabrication process, nanometer sized yttria stabilized zirconia were dispersed in to photo sensitive liquid resins at 30 % in volume fraction to obtain thixotropic slurries. The paste material was spread on a grass substrate with 10 μm in layer thickness by using mechanic knife edge movements, and an ultra violet micro pattern was exposed on the surface to create cross sectional solid layer with 2 μm in part accuracy. After the layer stacking process, the ceramic dispersed resin lattices of 100 μm in diameter were obtained exactly. These composite precursors were dewaxed and sintered at 600 and 1500 °C in an air atmosphere, respectively, and the fine ceramic lattices of 98 % in relative density were created. Gaseous fluid profiles and pressure distributions in the formed ceramic lattices with the various coordination numbers and porosity percents were visualized and analyzed by using finite element method. The fabricated solid electrolytes with the extremely high porosities and wide surface areas are expect to be applied to novel electrodes in the compact fuel cells. The smart processing of the solid electrolytes by utilizing computer aided design, manufacturing and evaluation methods will be demonstrated.

Partially ordered porous structures on layer‐by‐layer polyaniline/poly(vinyl sulfate sodium) ultrathin films: Easy fabrication of robust submicroscopic patterning

2019 ◽  
Vol 137 (17) ◽  
pp. 48597
Author(s):  
A. M. A. Faria ◽  
M. A. Miranda ◽  
G. E. Gonçalves ◽  
R. F. Bianchi ◽  
A. G. C. Bianchi ◽  
...  
Keyword(s):  
Ultrathin Films ◽  
Layer By Layer ◽  
Porous Structures ◽  
Partially Ordered ◽  
Ordered Porous

3D ordered porous SnO2 with a controllable pore diameter for enhanced formaldehyde sensing performance

2020 ◽  
Vol 13 (07) ◽  
pp. 2051044
Author(s):  
Dan Sun ◽  
Huixiao Guo ◽  
Yu Li ◽  
Haiying Li ◽  
Xiaosong Li ◽  
...  
Keyword(s):  
Oxygen Vacancies ◽  
Porous Structures ◽  
Gas Sensitivity ◽  
Long Term Stability ◽  
Response Recovery ◽  
Recovery Times ◽  
Formaldehyde Sensing ◽  
Different Diameters ◽  
Ordered Porous

This paper reports the preparation of 3D ordered porous SnO2 with different diameters (103, 546, and 1030[Formula: see text]nm) by a simple template method. We find that 103[Formula: see text]nm porous SnO2 nanomaterials have the highest response (30) and fastest response/recovery time (3/10 s) for 100 ppm HCHO (formaldehyde) compared with the response and response/recovery times for 546 nm (20 and 3/17[Formula: see text]s, respectively) and 1030 nm (10 and 6/20[Formula: see text]s, respectively) porous SnO2 nanomaterials at a low working temperature (220∘C). All three sensors show good long-term stability, repeatability, and linearity. The results show that decreasing the diameter of the porous SnO2 materials effectively increased the gas sensitivity to HCHO. The increase in the gas sensitivity was attributed to the ordered porous structures, large specific surface area, and additional oxygen vacancies on the surface.

Harnessing Bottom‐Up Self‐Assembly To Position Five Distinct Components in an Ordered Porous Framework

2019 ◽  
Vol 131 (16) ◽  
pp. 5402-5407 ◽  
Author(s):  
Binbin Tu ◽  
Lisa Diestel ◽  
Zhao‐Lin Shi ◽  
W. R. L. Nisansala Bandara ◽  
Yi Chen ◽  
...  
Keyword(s):  
Self Assembly ◽  
Bottom Up ◽  
Porous Framework ◽  
Ordered Porous

Convective combustion of ordered porous structures

1987 ◽  
Vol 22 (4) ◽  
pp. 410-414
Author(s):  
V. A. Arkhipov ◽  
V. N. Vilyunov ◽  
E. A. Kozlov ◽  
Vl. F. Trofimov
Keyword(s):  
Porous Structures ◽  
Convective Combustion ◽  
Ordered Porous

scholarly journals Breath-Figures Self-Assembly, the Versatile Method of Manufacturing Membranes and Porous Structures: Physical, Chemical and Technological Aspects

2017 ◽  
Author(s):  
Edward Bormashenko
Keyword(s):  
Self Assembly ◽  
Interfacial Phenomena ◽  
Physical Parameters ◽  
Porous Structures ◽  
Temporal Scales ◽  
Breath Figures ◽  
Spatial And Temporal Scales ◽  
Multi Scale ◽  
Physical Chemical ◽  
The Impact

The review is devoted to the physical, chemical and technological aspects of the breath-figures self-assembly process. Main stages of the process and the impact of the polymer architecture and physical parameters of the breath-figures self-assembly on the eventual pattern are covered. The review is focused on the hierarchy of spatial and temporal scales inherent for the breath-figures self-assembly. Multi-scale patterns arising from the process are addressed. The characteristic spatial lateral scales of patterns vary from nanometers to dozens of micrometers. The temporal scales of the process span from micro-seconds to seconds. The qualitative analysis performed in the paper demonstrates that the process is mainly governed by the interfacial phenomena, whereas the impact of inertia and gravity is negligible. Characterization and applications of polymer films manufactured with breath-figures self-assembly are discussed.

scholarly journals Keto–enol tautomerization drives the self-assembly of leucoquinizarin on Au(111)

2020 ◽  
Vol 56 (19) ◽  
pp. 2833-2836
Author(s):  
Roberto Costantini ◽  
Luciano Colazzo ◽  
Laura Batini ◽  
Matus Stredansky ◽  
Mohammed S. G. Mohammed ◽  
...  
Keyword(s):  
Self Assembly ◽  
The Self ◽  
Porous Structures

Leucoquinizarin is found to assemble on Au(111) surfaces in its keto–enolic tautomeric configuration and to form nanometric porous structures.

Synthesis of a Large-Scale Highly Ordered Porous Carbon Film by Self-Assembly of Block Copolymers

2004 ◽  
Vol 116 (43) ◽  
pp. 5909-5913 ◽  
Author(s):  
Chengdu Liang ◽  
Kunlun Hong ◽  
Georges A. Guiochon ◽  
Jimmy W. Mays ◽  
Sheng Dai
Keyword(s):  
Block Copolymers ◽  
Porous Carbon ◽  
Self Assembly ◽  
Large Scale ◽  
Carbon Film ◽  
Ordered Porous
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