Journal ArticleDOI
Porosity and Mechanical Properties of Mesoporous Thin Films Assessed by Environmental Ellipsometric Porosimetry
Cédric Boissière,David Grosso,Sophie Lepoutre,Lionel Nicole,and Aline Brunet Bruneau,Clément Sanchez +5 more
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TLDR
A modified Kelvin equation, coupled with a modelisation of pores contraction, enabled the determination of the structural parameters of films porous networks: ellipsoidal pore diameters, porous volume, and surface area.Abstract:
Mesoordered silica thin films with cubic structures were prepared by evaporation induced self-assembly (EISA) with two types of structuring agent (CTAB and block copolymer F127). A complete and accurate description of these films was obtained by combining 2D-SAXS analyses, variable angle spectroscopic ellipsometry, and a specially designed environmental ellipsometric porosimetry (EEP) experiment. The EEP analysis is rapid and cheap and operates at ambient pressure and temperature. This latter experiment was performed with water and produced a set of water adsorption-desorption isotherms. A modified Kelvin equation, coupled with a modelisation of pores contraction, enabled the determination of the structural parameters of films porous networks: ellipsoidal pore diameters, porous volume, and surface area. Young moduli of films in the direction perpendicular to the substrates were calculated from these parameters.read more
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Metal-organic framework thin films: from fundamentals to applications.
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Design, Synthesis, and Properties of Inorganic and Hybrid Thin Films Having Periodically Organized Nanoporosity†
TL;DR: In this paper, the authors present an extensive discussion on the major advances in the field of periodically organized mesoporous thin films (POMTFs) obtained via surfactant templated growth of inorganic or hybrid polymers.
Journal ArticleDOI
Mechanical properties of hybrid inorganic–organic framework materials: establishing fundamental structure–property relationships
TL;DR: This review examines the elasticity of hybrid frameworks by considering their Young's modulus, Poisson's ratio, bulk modulus and shear modulus; and proposes that a new domain be established in the materials selection map to define this emerging class of materials.
Journal ArticleDOI
Mesoporous materials and electrochemistry
TL;DR: This review will cover the whole field of the intersection between electrochemistry and ordered mesoporous materials, which includes the generation of mesostructured solids by electro-assisted deposition using appropriate templates and the application of these novel materials for electrochemical purposes.
Journal ArticleDOI
Density functional theory model of adsorption on amorphous and microporous silica materials.
TL;DR: A novel quenched solid density functional theory (QSDFT) model of adsorption on heterogeneous surfaces and porous solids, which accounts for the effects of surface roughness and microporosity is presented.
References
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Journal ArticleDOI
The Effect of Droplet Size on Surface Tension
TL;DR: In this article, the effect of droplet size on surface tension is given theoretical consideration with the help of results of the Gibbs thermodynamic theory of capillarity and of previous results as to the sign and magnitude of superficial densities.
Journal ArticleDOI
Continuous formation of supported cubic and hexagonal mesoporous films by sol–gel dip-coating
Yunfeng Lu,R. Ganguli,C. A. Drewien,M.T. Anderson,C. J. Brinker,Weiliang Gong,Guo Yx,Soyez H,Bruce Dunn,Michael H. Huang,Jeffrey I. Zink +10 more
TL;DR: In this article, a solgel-based dip-coating method for the rapid synthesis of continuous mesoporous thin films on a solid substrate is presented, which can be used for membrane-based separations, selective catalysis and sensors.
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Controlled formation of highly organized mesoporous titania thin films: from mesostructured hybrids to mesoporous nanoanatase TiO2.
Eduardo L. Crepaldi,Galo J. A. A. Soler-Illia,David Grosso,Florence Cagnol,François Ribot,Clément Sanchez +5 more
TL;DR: The complete synthesis and characterization procedures to generate highly organized and oriented mesoporous titania thin films, using poly(ethylene oxide) (PEO)-based templates are reported.
Journal ArticleDOI
Fundamentals of Mesostructuring Through Evaporation-Induced Self-Assembly†
David Grosso,Florence Cagnol,G. J. de A. A. Soler-Illia,Eduardo L. Crepaldi,Heinz Amenitsch,A. Brunet-Bruneau,A. Bourgeois,Clément Sanchez +7 more
TL;DR: In this paper, the meso-organization of thin silica films using tetraethylorthosilicate (TEOS) as the inorganic source and cetyltrimethylammonium bromide (CTAB) as structuring agent is investigated.
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Microporosity and connections between pores in SBA-15 mesostructured silicas as a function of the temperature of synthesis
TL;DR: In this article, an image of the porous structure of SBA-15 and low-pressure argon adsorption was used to draw a coherent picture of the evolution of the precursor mesophase as a function of the synthesis temperature.