等离子体子
材料科学
纳米技术
催化作用
热电子
电子
电子转移
光电子学
化学
光化学
物理
生物化学
量子力学
作者
Guopeng Xu,Zhiyuan Ren,Jingcheng Xu,Hongwang Lu,Xiangdong Liu,Yuanyuan Qu,Weifeng Li,Mingwen Zhao,Weimin Huang,Yong-Qiang Li
标识
DOI:10.1021/acsami.4c03105
摘要
Plasmonic nanozymes bring enticing prospects for catalytic sterilization by leveraging plasmon-engendered hot electrons. However, the interface between plasmons and nanozymes as the mandatory path of hot electrons receives little attention, and the mechanisms of plasmonic nanozymes still remain to be elucidated. Herein, a plasmonic carbon-dot nanozyme (FeCG) is developed by electrostatically assembling catalytic iron-doped carbon dots (Fe-CDs) with plasmonic gold nanorods. The energy harvesting and hot-electron migration are remarkably expedited by a spontaneous organic-inorganic heterointerface holding a Fermi level-induced interfacial electric field. The accumulated hot electrons are then fully utilized by conductive Fe-CDs to boost enzymatic catalysis toward overproduced reactive oxygen species. By synergizing with localized heating from hot-electron decay, FeCG achieves rapid and potent disinfection with an antibacterial efficiency of 99.6% on Escherichia coli within 5 min and is also effective (94.2%) against Staphylococcus aureus. Our work presents crucial insights into the organic-inorganic heterointerface in advanced plasmonic biocidal nanozymes.
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