材料科学
催化作用
纳米技术
纳米点
织物
涂层
抗菌活性
Atom(片上系统)
化学工程
组合化学
化学
细菌
有机化学
复合材料
计算机科学
生物
工程类
遗传学
嵌入式系统
作者
Xiao-Hui Dai,Huan Liu,Bin Cai,Yang Liu,Kepeng Song,Jing Chen,Shou‐Qing Ni,Lingshuai Kong,Jinhua Zhan
出处
期刊:Small
[Wiley]
日期:2023-07-25
卷期号:19 (47)
被引量:8
标识
DOI:10.1002/smll.202303901
摘要
Surface antibacterial coatings with outstanding antibacterial efficiency have attracted increasing attention in medical protective clothing and cotton surgical clothing. Although nanozymes, as a new generation of antibiotics, are used to combat bacteria, their catalytic performance remains far from satisfactory as alternatives to natural enzymes. Single-atom nanodots provide a solution to the low catalytic activity bottleneck of nanozymes. Here, atomically thin C3 N4 nanodots supported single Cu atom nanozymes (Cu-CNNDs) are developed by a self-tailoring approach, which exhibits catalytic efficiency of 8.09 × 105 M-1 s-1 , similar to that of natural enzyme. Experimental and theoretical calculations show that excellent peroxidase-like activity stems from the size effect of carrier optimizing the coordination structure, leading to full exposure of Cu-N3 active site, which improves the ability of H2 O2 to generate hydroxyl radicals (•OH). Notably, Cu-CNNDs exhibit over 99% superior antibacterial efficacy and are successfully grafted onto cotton fabrics. Thus, Cu-CNNDs blaze an avenue for exquisite biomimetic nanozyme design and have great potential applications in antibacterial textiles.
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