Scalable Templated Fabrication of Cu-based MOF on Textiles for Simultaneous Sensing, Filtration, and Detoxification of SO2.

This paper describes the scalable fabrication of smart electronic textiles (e-textiles) capable of simultaneous sensing, filtration, and detoxification of sulfur dioxide (SO2). The templated method converts pre-deposited copper metal into copper hydroxide followed by conversion into a copper-based hexahydroxytriphenylene MOF (Cu3(HHTP)2) to afford a large area (10 × 10 cm2) conductive coating (sheet resistance = 0.1-0.3 MΩ). The resulting e-textiles achieve sensing (theoretical limit of detection (LOD) of 0.43 ppm), filtration (adsorption uptake of 1.9 mmol g-1 and 0.83 mmol g-1 for MOF powder and MOF/textile at 1 bar and 298 K), and detoxification (redox conversion of SO2 gas into solid sulfate) due to the selective material-analyte interactions. This scalable method for generating e-textiles is a promising approach for the fabrication of smart membrane materials with multifunctional performance characteristics.