Biological chitin-MOF composites with hierarchical pore systems for air-filtration applications
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
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.
Details
Original language | English |
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Pages (from-to) | 12588-12591 |
Number of pages | 4 |
Journal | Angewandte Chemie - International Edition |
Volume | 54 |
Issue number | 43 |
Publication status | Published - 28 Aug 2015 |
Peer-reviewed | Yes |
External IDs
PubMed | 26314273 |
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Keywords
Sustainable Development Goals
ASJC Scopus subject areas
Keywords
- chitin, CuBTC, marine sponge, metal-organic frameworks, NH adsorption