Unpredictable pandemics are likely to pose a significant global threat in the future, and biologically protective textiles will play critical roles in controlling the spread of pathogens during outbreaks. Herein, we present a novel metal–organic framework (MOF) composed of repeating units of a Cu(II)/(L-Cys) 2 complex formed through coordination bonds between Cu(II) and L-Cys, while being interconnected by ionic bonds involving Cu(II) and the carboxylate group of L-Cys. After covalently embedding the MOF nanofibers onto cotton fiber surfaces, the resulting fabrics exhibit remarkable virucidal and antibacterial capabilities. Remarkably, even after 200 friction or 50 laundering cycles, the high antiviral ability to inactivate all phi- × 174 within 10 min was maintained, and the bacterial reduction rate against E. coli and S. aureus remained nearly at 100%. The remarkable virucidal effect of the L-Cys@Cu MOF structure is elucidated through a series of α-amylase denaturation simulation tests, providing the first experimental demonstration of the antiviral mechanism, whereby MOF nanofibers induce protein denaturation to inactivate viruses. Moreover, cytotoxicity assessments confirm that the fabrics adorned with MOF nanofibers are safe for human skin. These advantages are promising for the development of protective textiles, highlighting the great potential of nanoscience in combating pandemics. Graphical Abstract
The harsh service environment in the splash zone poses serious challenges for the long-term durability of steel pipe piles. The basalt fibers (BF) reinforced-composite coatings have acquired great attention in various fields such as offshore wind power equipment and construction industry due to the high strength and chemical stability. However, the service life of BF reinforced-composite coatings is greatly restricted by poor interfacial compatibility between BFs and polymer resin. In this work, we fabricated a BF reinforced epoxy powder composite coating with excellent erosion resistance by constructing L-Cys@Cu MOF on BFs. The interfacial shear strength value between MBF and EP was 49.66 % larger than that of BF. Contrasted to EP, the adhesion strength between 2.5 %MBF/EP coating and the steel substrate was 79.65 MPa, which was increased by 24.67 %. Interestingly, the mass and volume loss of 2.5 %MBF/EP coating was decreased by 22.77 % and 21.16 %, respectively, compared with 2.5 %CBF/EP coating. These results demonstrate the broader applicability of BF in composite materials, arising from the synergistic effect of mechanical interlocking between MBF and EP and the formation of cross-linking network between L-Cys@Cu MOF and EP. This work provides a novel perspective for the development of BF reinforced-composite coatings with long-term erosion resistance.
危险品化学品经营许可证（带存储）