纳米技术
双金属片
材料科学
异质结
金属有机骨架
化学
金属
光电子学
吸附
有机化学
冶金
作者
Lunjie Huang,Da‐Wen Sun,Hongbin Pu
出处
期刊:Small
[Wiley]
日期:2022-04-18
卷期号:18 (20)
被引量:57
标识
DOI:10.1002/smll.202200178
摘要
Metal-organic frameworks (MOFs) are a versatile toolbox for the bioinspired design of nanozymes for antibacterial applications and beyond, however, designing a nanozyme by the hierarchical quasi-MOF scheme remains largely unpracticed. This work exemplifies the preferential structure-activity correlation of a bimetallic quasi-MOF (Q-MOFCe0.5 ) among three series of MOF-derived peroxidase (POD) mimics. The biomimetic quasi-MOFCe0.5 nanosheets accommodate both oxygen vacancy-coupled multivalent redox cycles and photosensitive energy band layout, benefiting from the hierarchical heterojunction-like 0D/2D interface featuring isolated nodes-derived CeOCu sites upon the 2D decarboxylated MOF scaffold. These integrated unique merits enable the POD-like Q-MOFCe0.5 to generate sustained reactive oxygen species to effectively eradicate the surface-adhered bacteria under visible light, resulting in significant inactivation of Escherichia coli (99.74 %) and Staphylococcus aureus (99.35%) in vitro, and potent disinfection of skin wounds in vivo in safe and on-demand manners. It is hoped that this work can intensify the interventions of MOF nanozymes against the microbial world.
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