生物污染
纳米技术
催化作用
材料科学
纳米材料
化学工程
化学
有机化学
膜
生物化学
工程类
作者
Qi Luo,Yunhong Li,Xiaobing Huo,Jinyang Li,Linqian Li,Wei Wang,Yilan Li,Shipeng Chen,Yinqiao Song,Ning Wang
出处
期刊:Small
[Wiley]
日期:2022-03-14
卷期号:18 (16)
被引量:20
标识
DOI:10.1002/smll.202107401
摘要
The generation of undesired biofouling in medical and engineering applications results in a reduction in function and durability. Copying functionalities of natural enzymes to combat biofouling by artificial nanomaterials is highly attractive but still challenged by the inferior catalytic activity and specificity principally because of low densities of active sites. Here, an innovate strategy is demonstrated to stabilize high-density ultrasmall ceria clusters on zirconia for biofouling prevention. Benefiting from the unique structure, CeO2 @ZrO2 nanozyme can significantly enhance the haloperoxidase-mimicking activity in catalyzing the oxidation of bromide with H2 O2 into biocidal hypobromous acid as a result of abundant defects and surface strong acidity sites, inducing impressive antibacterial and antibiofouling capacity compared with that of pristine CeO2 . This work is expected to open a new avenue for the rational design of cluster catalysts for various targeting catalytic applications.
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