Bioanalytische Chemie, Technische Universität Dresden, Bergstrasse 66, 01069 Dresden (Germany).
Anorganische Chemie I, Technische Universität Dresden, Bergstrasse 66, 01069 Dresden (Germany).
Angew Chem Int Ed Engl. 2015 Oct 19;54(43):12588-91. doi: 10.1002/anie.201504572. Epub 2015 Aug 28.
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.
金属-有机骨架（MOF）是气体分离和空气过滤应用的有前途的材料。然而，对于这些应用，MOF 晶体需要被整合到坚固且易于管理的支撑材料中。我们使用了一种来自海洋海绵的基于甲壳素的网络，作为 MOF 沉积的无毒、可生物降解和低重量的支撑材料。该材料的结构特性有利于 MOF 晶体优先在中空纤维的内部成核。这种复合材料具有分级孔系统，比表面积高达 800 m²/g 和孔体积为 3.6 cm³/g，允许良好的传输动力学和活性材料的高负载。氨突破实验突出了 MOF 晶体的可及性和复合材料的吸附潜力，表明它们在过滤有毒工业气体方面具有很高的应用潜力。
