Biological chitin-MOF composites with hierarchical pore systems for air-filtration applications

Wisser D, Wisser FM, Raschke S, Klein N, Leistner M, Grothe J, Brunner E, Kaskel S (2015)

Publication Type: Journal article, Original article

Publication year: 2015

Journal

Angewandte Chemie International Edition Wiley

Book Volume: 54

Pages Range: 12588-12591

Journal Issue: 43

DOI: 10.1002/anie.201504572

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 m2-g-1 and pore volumes of 3.6 cm3-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. Sponge bag: A composite material is formed from a metal-organic framework (MOF) and a chitin biopolymeric network extracted from a marine sponge. The inner surface functionalities of the biomatrix cause the MOF HKUST-1 (Cu3BTC2) to crystalize inside the hollow chitin fibers, resulting in a hierarchical pore system with a surface area of up to 800 m2-g-1. The composite shows a high affinity for toxic industrial gases such as NH3.

Authors with CRIS profile

Dorothea Wisser
Florian Wisser

Involved external institutions

Technische Universität Dresden DE Germany (DE) Fraunhofer-Institut für Werkstoff- und Strahltechnik (IWS) / Fraunhofer Institute for Material and Beam Technology DE Germany (DE)

How to cite

APA:

Wisser, D., Wisser, F.M., Raschke, S., Klein, N., Leistner, M., Grothe, J.,... Kaskel, S. (2015). Biological chitin-MOF composites with hierarchical pore systems for air-filtration applications. Angewandte Chemie International Edition, 54(43), 12588-12591. https://doi.org/10.1002/anie.201504572

MLA:

Wisser, Dorothea, et al. "Biological chitin-MOF composites with hierarchical pore systems for air-filtration applications." Angewandte Chemie International Edition 54.43 (2015): 12588-12591.

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