title: Biological Chitin-MOF Composites with Hierarchical Pore Systems for Air-Filtration Applications.
abstract: Metal-organic frameworks (MOFs) are promising materials for gas-separation and air-filtration applications. However, for these applications, MOF crystallites need to be incorporated in robust and manageable support materials. We used chitin-based networks from a marine sponge as a non-toxic, biodegradable, and low-weight support material for MOF deposition. The structural properties of the material favor predominant nucleation of the MOF crystallites at the inside of the hollow fibers. This composite has a hierarchical pore system with surface areas up to 800 m(2)  g(-1) and pore volumes of 3.6 cm(3)  g(-1) , allowing good transport kinetics and a very high loading of the active material. Ammonia break-through experiments highlight the accessibility of the MOF crystallites and the adsorption potential of the composite indicating their high potential for filtration applications for toxic industrial gases.
authors: Bioanalytische Chemie, Technische Universität Dresden, Bergstrasse 66, 01069 Dresden (Germany).
authors: Dorothea
authors: D
authors: Wisser
authors: Anorganische Chemie I, Technische Universität Dresden, Bergstrasse 66, 01069 Dresden (Germany).
authors: Florian M
authors: FM
authors: Wisser
authors: Anorganische Chemie I, Technische Universität Dresden, Bergstrasse 66, 01069 Dresden (Germany).
authors: Silvia
authors: S
authors: Raschke
authors: Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS, Winterbergstraße 28, 01277 Dresden (Germany).
authors: Nicole
authors: N
authors: Klein
authors: Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS, Winterbergstraße 28, 01277 Dresden (Germany).
authors: Matthias
authors: M
authors: Leistner
authors: Anorganische Chemie I, Technische Universität Dresden, Bergstrasse 66, 01069 Dresden (Germany).
authors: Julia
authors: J
authors: Grothe
authors: Bioanalytische Chemie, Technische Universität Dresden, Bergstrasse 66, 01069 Dresden (Germany). Eike.Brunner@chemie.tu-dressden.de.
authors: Eike
authors: E
authors: Brunner
authors: Anorganische Chemie I, Technische Universität Dresden, Bergstrasse 66, 01069 Dresden (Germany). Stefan.Kaskel@chemie.tu-dresden.de.|Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS, Winterbergstraße 28, 01277 Dresden (Germany). Stefan.Kaskel@chemie.tu-dresden.de.
authors: Stefan
authors: S
authors: Kaskel
mesh_terms: D000327:Adsorption; D061808:Air Filters; D000393:Air Pollutants / Q000302:isolation & purification*; D000641:Ammonia / Q000302:isolation & purification*; D000818:Animals; D002686:Chitin / Q000737:chemistry*; D009942:Organometallic Compounds / Q000737:chemistry*; D011161:Porifera / Q000737:chemistry; D016062:Porosity
chemical_list: D000393:Air Pollutants; D009942:Organometallic Compounds; D002686:Chitin; D000641:Ammonia
keywords: Cu3BTC2; NH3 adsorption; chitin; marine sponge; metal-organic frameworks