Results 261 to 270 of about 57,985 (299)
Some of the next articles are maybe not open access.
3D Printing of Polymers with Hierarchical Continuous Porosity
Advanced Materials Technologies, 2017AbstractCellular thermoplastic structures with multiscale porosity (1–300 µm microporosity to 0.3–10 mm macroporosity) are produced from an integrated approach of 3D printing by Fused Deposition Modeling printing and Supercritical CO2 Foaming. Porous strands and related hierarchical structures are processed in one continuous step. Influence of printing
Matteo Gregorio Modesto Marascio +3 more
openaire +1 more source
Hollow Carbon Nanopolyhedra for Enhanced Electrocatalysis via Confined Hierarchical Porosity
Small, 2017A novel strategy for the fabrication of hollow Co and N‐codoped carbon nanopolyhedra (H‐CoNC) from metal–organic framework (MOF) using in situ evaporation of ZnO nanosphere templates is proposed. The excess Zn supply during the pyrolysis process is found beneficial in terms of high nitrogen (≈9.75 at%), relatively homogenous CoN bonding, and the ...
Xiaokai, Song +5 more
openaire +2 more sources
TiO2 anatase-based membranes with hierarchical porosity and photocatalytic properties
Journal of Colloid and Interface Science, 2006Taking benefit of previously obtained results, stable complex organic-inorganic hybrid suspensions are successfully prepared by mixing a polystyrene latex aqueous suspension, a titania hydrosol and a nonionic triblock copolymer. These suspensions can be then deposited as thin films on dense or porous substrates.
Bosc, Florence +2 more
openaire +3 more sources
Journal of Materials Chemistry, 2011
Meso- and microporous melamine resins were synthesized via hard-templating of silica nanoparticles. The porous structure was characterized by X-ray scattering, gas sorption methods and electron microscopy. Ultramicroporosity was proven in CO2-sorption measurements. Porosities up to 61% and surface areas up to 250 m2 g−1 were achieved.
Wilke, A., Weber, J.
openaire +2 more sources
Meso- and microporous melamine resins were synthesized via hard-templating of silica nanoparticles. The porous structure was characterized by X-ray scattering, gas sorption methods and electron microscopy. Ultramicroporosity was proven in CO2-sorption measurements. Porosities up to 61% and surface areas up to 250 m2 g−1 were achieved.
Wilke, A., Weber, J.
openaire +2 more sources
Titanosilicate Beads with Hierarchical Porosity: Synthesis and Application as Epoxidation Catalysts
Chemistry – A European Journal, 2010AbstractPorous titanosilicate beads with a diameter of 0.5–1.5 mm (TiSil‐HPB‐60) were synthesized from a preformed titanosilicate solution with a porous anion‐exchange resin as template. The bead format of this material enables its straightforward separation from the reaction mixture in its application as a liquid‐phase heterogeneous catalyst.
Lin, Kaifeng +4 more
openaire +3 more sources
Bulk gold with hierarchical macro-, micro- and nano-porosity
Materials Science and Engineering: A, 2011Abstract Millimeter-sized, free-standing gold structures were created with three levels of multiscale porosity. First, macro- and microporosity, which are useful for mass and heat transport within the structure, are formed within an Ag–19 at.% Au alloy by salt powder replication during powder densification and by entrapped gas expansion during ...
Marie E. Cox, David C. Dunand
openaire +1 more source
Facile synthesis of ZSM-5 composites with hierarchical porosity
J. Mater. Chem., 2008Hierarchically structured composites (TUD-M) with ZSM-5 nanocrystals embedded in a well-connected mesoporous matrix were synthesized by employing only one organic templating/scaffolding molecule (TPAOH). Micro- and mesopores form separately under different synthesis conditions.
Jia Wang +4 more
openaire +1 more source
Development of carbon foams with hierarchical porosity
Revista de Materiales Compuestos, 2022G. Sarigul, L. Maiorano, J. Molina
openaire +1 more source
Ordered bimetallic nanostructures with hierarchical porosity and their applications
SPIE Proceedings, 2006We describe how two different kinds of ordered bimetallic nanostructures (Au/Pt, Au/Ag) with hierarchical porosity, such as macroporous nanostructures and nanostructures constructed from hollow spheres, can be selectively and conveniently fabricated by a general template technique on silicon wafers and on glass substrates, and how such nanostructures
Lehui Lu +3 more
openaire +1 more source
High surface area carbon aerogel monoliths with hierarchical porosity
Journal of Non-Crystalline Solids, 2008Abstract This letter describes the synthesis and structural characterization of monolithic carbon aerogel (CA) materials that possess both high surface areas and hierarchical porosity. Thermal activation of a macroporous CA structure, one that was derived from an acetic acid-catalyzed sol–gel polymerization reaction, yields monolithic materials with ...
Theodore F. Baumann +3 more
openaire +1 more source