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Aerogels-Airy Materials: Chemistry, Structure, and Properties.
Nicola Hüsing,Ulrich S. Schubert +1 more
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The design of such a filigrane network requires the very careful control of chemical parameters and the reward is an assortment of different property profiles owing to the richness of possible variations.Abstract:
Air, air, air… and some solid skeleton; this is the basis for an interesting class of materials-the aerogels (shown schematically on the right). Can one therefore speak of "simple" chemistry? The design of such a filigrane network requires the very careful control of chemical parameters. The reward is an assortment of different property profiles owing to the richness of possible variations.read more
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Anisotropic and hierarchical SiC@SiO2 nanowire aerogel with exceptional stiffness and stability for thermal superinsulation.
Lei Su,Lei Su,Hongjie Wang,Min Niu,Sheng Dai,Zhixin Cai,Biguo Yang,Huaixun Huyan,Xiaoqing Pan +8 more
TL;DR: A SiC@SiO2 nanowire aerogel with a nanowires-assembled anisotropic and hierarchical microstructure was prepared by using directional freeze casting and subsequent heat treatment to realize thermal superinsulation and high stiffness of ceramic aerogels.
Tailoring properties of cross-linked polyimide aerogels for better moisture resistance, flexibility and strength
Haiquan Guo,Mary Ann B. Meador,Linda McCorkle,Derek J. Quade,Jiao Guo,Bart Hamilton,Mukerrem Cakmak +6 more
TL;DR: Combinations of rigid and flexible aromatic diamines were used to tailor the properties of octa(aminophenyl)-silsesquioxane (OAPS) cross-linked polyimide aerogels, andReplacing ODA with PPDA increases shrinkage that occurs during gelation and processing, while increasing the DMBZ fraction decreases shrinkage.
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Bifunctional Graphene/γ‐Fe2O3 Hybrid Aerogels with Double Nanocrystalline Networks for Enzyme Immobilization
TL;DR: The resulting bifunctional aerogels are used to immobilize β-glucuronidase for biocatalytic transformation of glycyrrhizin into glycyrrhetinic acid monoglucuronide or glycyssinic acid, with high bioc atalytic activity and definite repeatability.
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Superhydrophobic silica aerogel microspheres from methyltrimethoxysilane: rapid synthesis via ambient pressure drying and excellent absorption properties
TL;DR: In this paper, a novel ambient pressure drying (APD) method was successfully developed for the drying of precursor silica microspheres that were obtained via a water-in-oil (W/O) emulsion method using methyltrimethoxysilane (MTMS).
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Titania−Silica Materials from the Molecular Precursor Ti[OSi(OtBu)3]4: Selective Epoxidation Catalysts
TL;DR: In this article, the tristert-butoxy)siloxy complex Ti[OSi(OtBu)3]4 was pyrolytically converted at low temperatures to the theoretical yield of homogeneous TiO4SiO2 materials.