The health-threatening air pollution, especially from particulate matter (PM), has triggered increasing demands for developing low-cost and long-service-life air-cleaning technologies. In the present contribution, a range of high-efficiency textiles/metal–organic framework (MOF) composites (MOFs@textiles) air filters with excellent washable reusability is presented. By processing MOFs onto textile substrates via an eco-friendly solvent-free method to enable the microporous feature and also strong PM adhesion, we develop flexible, highly effective air filters with >95.00% PM removal efficiency (e.g., MiL-53­(Al)@Aramid, PM2.5: 95.30%, PM10: 96.11%) under harmful air quality conditions (average PM2.5 mass concentration > 280 μg m–3 and PM10 > 360 μg m–3). Therefore, these MOFs@textiles are promising composites for producing efficient and recyclable out-/indoor air purifiers.

Photoenzymatic coupled catalysis, integrating semiconductor photocatalysis and enzymatic catalysis, exhibits great potential for light-driven synthesis. To make photocatalyst and enzyme at play concertedly, nicotinamide-based cofactors have been widely used as electron carrier. However, these cofactors are easily oxidized into enzymatically inactive form by photo-generated holes. Herein, oxidation mechanism of NADH, one typical nicotinamide-based cofactor, by photo-generated holes was reported. With CdS, g-C3N4 and BiVO4 as hole generators, NADH is oxidized into NAD + or fragmented into ADP-ribose derivatives through multi-step electron transfer. Importantly, fragmentation reaction is inhibited with dopamine and neutral red to coordinate electron transfer between NADH and photo-generated holes.

Metal−organic frameworks (MOFs) with tailored chemical compositions and topological structures have exhibited good application potential in the fields of adsorption, catalysis, and so on. In our study, an aerogel that is composed of a kapok fiber core and MOF nanocoating was fabricated through growing hydrophobic ZIF-8 on the kapok surface induced by Fe 3+ -tannic acid networks (FTN). Briefly, kapok, a typical fiber in nature, was first pretreated by NaClO 2 solution and then coated by FTN through coordination-enabled assembly/adhesion of Fe 3+ and tannic acid. Then, the growth of ZIF-8 nanocoating was triggered by FTN, where the dodecane was in situ anchored on the as-formed ZIF-8, thus forming the ZIF-8*/FTN/ kapok aerogel. The resultant aerogel exhibited a lotus leaf-like surface, where ZIF-8 and dodecane, respectively, mimicked the nubs and the wax on the lotus leaf. As a result, the aerogel showed a superhydrophobic surface that exhibited a water contact angle of 162.31°, which could absorb a series of oils/organics with the capacities of 20.0−72.0 g g (sorbent)−1 , over 17−40 times higher than ZIF-8* particles depending on the types of oils/organics. Moreover, the aerogel showed superior recyclability, which retained over 75.64% of its original sorption capacity after 50 cycles. By using of our method, the hydrophobic MOF nanocoating could be grown on a broad range of materials, which would broaden the application of MOFs.