Functionalization of 3D printed ABS filters with MOF for toxic gas removal

[Display omitted] •Robust method for functionalization of 3D printed ABS filters with MOFs•Low temperature ALD of ZnO and its hydrothermal conversion to ZIF-8•Attractive VOC adsorption properties of ABS/ZIF-8 composite for air filtration Acrylonitrile butadiene styrene (ABS) is one of the most extensively used polymer in 3D printing manufacturing due to its competitive thermal and mechanical properties. Recently, a special attention has been devoted to novel ABS composites featuring extra functionalities e.g. in the area of VOC removal. Herein, we report on a facile protocol for the functionalization of 3D printed ABS filters with a MOF (Metal-Organic Framework) material (ZIF-8) targeting the conception of attractive gas filters. The proposed synthesis strategy consists in low temperature ALD (Atomic Layer Deposition) of ZnO on the ABS grid followed by the hydrothermal conversion of ZnO to ZIF-8, both steps being conducted at 60°C. In such way, the method enables an effective growth of ZIF-8 without altering the stability of the polymeric ABS support. The as-fabricated ABS/ZIF-8 filters offer a promising adsorption behaviour for dimethyl methylphosphonate (∼20.4mg of DMMP per gram of ZIF-8), thus proving their potential for toxic gas capture applications.