Frequent outbreaks of respiratory diseases caused by the spread of pathogenic microorganisms poses a great threat to human health.Disposable surgical masks(SM)can limit the transmission to some extent but the inabilit...Frequent outbreaks of respiratory diseases caused by the spread of pathogenic microorganisms poses a great threat to human health.Disposable surgical masks(SM)can limit the transmission to some extent but the inability to self-sterilize leads to a potential source of cross-contamination as well as causing hazardous impacts on the soil and aquatic ecosystems.Herein,a sunlight-triggered photoactive self-sterilization metal–organic framework(MOF)film modified SM is reported.The MOF film can be prepared easily and quickly by the co-assembly of UiO-66 nanoparticles and metal-phenolic networks(MPNs,the complexation of tannic acid and iron ions).Unlike the traditional MPN only assisted assembly,this MOF film exhibited a dramatic synergetic photodynamic and photothermal self-sterilization ability for protective equipment surfaces under simulated-solar irradiation without any extra photosensitizers or photothermal agents.A study of the mechanism revealed that the light absorption region of UiO-66 can be expanded by the MPNs,demonstrating a unique photocatalytic sensitization,and thus the MOF film can utilize the sunlight extensively to achieve a photodynamic property.Moreover,such an MOF film demonstrated excellent cytocompatibility,haemocompatibility and breathability,indicating the security of the skin-touched application.This dual-modal photocatalytic MOF film are promising for the long-term usage of disposable protective equipment and for mitigating the heavy burden on the environment.展开更多
基金support from the Natural Science Foundation of Shandong Province(no.ZR2022QB040 and ZR2022QH006)the Incubation Program of Youth Innovation of Shandong Province.
文摘Frequent outbreaks of respiratory diseases caused by the spread of pathogenic microorganisms poses a great threat to human health.Disposable surgical masks(SM)can limit the transmission to some extent but the inability to self-sterilize leads to a potential source of cross-contamination as well as causing hazardous impacts on the soil and aquatic ecosystems.Herein,a sunlight-triggered photoactive self-sterilization metal–organic framework(MOF)film modified SM is reported.The MOF film can be prepared easily and quickly by the co-assembly of UiO-66 nanoparticles and metal-phenolic networks(MPNs,the complexation of tannic acid and iron ions).Unlike the traditional MPN only assisted assembly,this MOF film exhibited a dramatic synergetic photodynamic and photothermal self-sterilization ability for protective equipment surfaces under simulated-solar irradiation without any extra photosensitizers or photothermal agents.A study of the mechanism revealed that the light absorption region of UiO-66 can be expanded by the MPNs,demonstrating a unique photocatalytic sensitization,and thus the MOF film can utilize the sunlight extensively to achieve a photodynamic property.Moreover,such an MOF film demonstrated excellent cytocompatibility,haemocompatibility and breathability,indicating the security of the skin-touched application.This dual-modal photocatalytic MOF film are promising for the long-term usage of disposable protective equipment and for mitigating the heavy burden on the environment.
