A Hierarchical Metal–Organic Framework Intensifying ROS Catalytic Activity and Bacterial Entrapment for Engineering Self-Antimicrobial Mask

IF 14.3 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Wei Huang, Haitao Yuan, Huangsheng Yang, Yujian Shen, Lihong Guo, Ningyi Zhong, Tong Wu, Yong Shen, Guosheng Chen, Siming Huang, Li Niu, Gangfeng Ouyang
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Abstract

Leveraging functional materials to develop advanced personal protective equipment is of significant importance for cutting off the propagation of infectious diseases, yet faces ongoing challenges owing to the unsatisfied antimicrobial efficiency. Herein a hierarchically porous cerium metal–organic framework (Ce-MOF) boosting the antimicrobial performance by intensifying catalytic reactive oxygen species (ROS) generation and bacterial entrapment simultaneously is reported. This Ce-MOF presents dendritic surface topography and hierarchical pore channels where the Lewis acid Ce sites are dispersedly anchored. Attributing to this sophisticated nanoarchitecture rendering the catalytic Ce sites highly accessible, it shows a ca. 1800-fold activity enhancement for the catalytic conversion of atmospheric oxygen to highly toxic ROS compared to traditional CeO2. Additionally, the dendritic and negative-charged surface engineered in this Ce-MOF substantially enhances the binding affinity toward positive-charged bacteria, enabling the spatial proximity between the bacteria and the short-lived ROS and therefore maximizing the utilization of highly toxic ROS to inactivate bacteria. It is demonstrated that this Ce-MOF-integrated face mask displays almost 100% antimicrobial efficacy even in insufficient light and dark scenarios. This work provides important insights into the design of antibacterial MOF materials by a pore- and surface-engineering strategy and sheds new light on the development of advanced self-antimicrobial devices.

Abstract Image

一种强化活性氧催化活性和细菌捕获的分层金属-有机框架工程自抗菌口罩。
利用功能材料开发先进的个人防护装备对于阻断传染病的传播具有重要意义,但由于抗菌效率不理想,面临着持续的挑战。本文报道了一种分层多孔铈金属有机框架(Ce-MOF)通过同时增强催化活性氧(ROS)的产生和细菌的捕获来提高抗菌性能。这种Ce- mof呈现树枝状表面形貌和分层孔隙通道,其中Lewis酸Ce位点分散锚定。由于这种复杂的纳米结构使得催化Ce位点易于接近,与传统的CeO2相比,它在将大气氧催化转化为高毒性ROS方面的活性提高了约1800倍。此外,在这种Ce-MOF中设计的树突状和带负电的表面大大增强了对带正电的细菌的结合亲和力,使细菌和短寿命ROS之间的空间接近,从而最大限度地利用高毒性ROS来灭活细菌。实验证明,即使在光线不足和黑暗的情况下,这种ce - mof集成口罩的抗菌效果也几乎达到100%。这项工作为通过孔和表面工程策略设计抗菌MOF材料提供了重要见解,并为先进的自抗菌器件的开发提供了新的思路。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Advanced Science
Advanced Science CHEMISTRY, MULTIDISCIPLINARYNANOSCIENCE &-NANOSCIENCE & NANOTECHNOLOGY
CiteScore
18.90
自引率
2.60%
发文量
1602
审稿时长
1.9 months
期刊介绍: Advanced Science is a prestigious open access journal that focuses on interdisciplinary research in materials science, physics, chemistry, medical and life sciences, and engineering. The journal aims to promote cutting-edge research by employing a rigorous and impartial review process. It is committed to presenting research articles with the highest quality production standards, ensuring maximum accessibility of top scientific findings. With its vibrant and innovative publication platform, Advanced Science seeks to revolutionize the dissemination and organization of scientific knowledge.
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