Highly Adsorptive, MOF‐Functionalized Nonwoven Fiber Mats for Hazardous Gas Capture Enabled by Atomic Layer Deposition

• DOI: 10.1002/admi.201400040
• Publication Date: 2014-03-20T08:25:17Z
• Authors: Junjie Zhao; Mark D. Losego; Paul C. Lemaire; Philip S. Williams; Bo Gong; Sarah E. Atanasov; Trent M. Blevins; Christopher J. Ol...; Howard J. Walls; Sarah D. Shepherd; Matthew A. Browe; Gregory W. Peterson; Gregory N. Parsons
• Keywords: Polypropylene; Deposition

While metal‐organic frameworks (MOFs) show great potential for gas adsorption and storage, their powder form limits deployment opportunities. Integration of MOFs on polymeric fibrous scaffolds will enable new applications in adsorption, membrane separation, catalysis, toxic sensing. Here, we demonstrate a synthesis route growing materials that achieves high MOF loadings, large surface areas adsorptive capacities. We find nanoscale coating Al 2 O 3 formed by atomic layer deposition (ALD) the nonwoven fiber mats facilitates nucleation fibers throughout mat. Functionality is fully maintained after integration, crystals are well attached to fibers. Breakthrough tests HKUST‐1 [Cu (BTC) ] ALD‐coated polypropylene reveal NH dynamic loadings up 5.93 ± 0.20 mol/kg (MOF+fiber) . Most importantly, this synthetic approach generally applicable wide range polymer (e.g., PP, PET, cotton) HKUST‐1, MOF‐74, UiO‐66).