Journal
NANOSCALE
Volume 14, Issue 32, Pages 11693-11702Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2nr02828j
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Funding
- National Science Foundation of China [31901794, 21675127]
- National Postdoctoral Program for Innovative Talents [BX20180263]
- China Postdoctoral Science Foundation [2018M641026]
- Shaanxi Provincial Science Fund for Distinguished Young Scholars [2018JC-011]
- Young Talent Fund of University Association for Science and Technology in Shaanxi, China [2019-02-03]
- Key Research and Development Program of Shaanxi Province [2019NY-111]
- Tang Scholar by Cyrus Tang Foundation
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By reducing the dimensionality of the nanozymes, the catalytic activity is improved, leading to better antibacterial effects, wound healing promotion, and water environment disinfection.
The antibacterial strategy using cutting-edge metal-organic framework (MOF)-based nanozymes can effectively solve the problem caused by antibiotic resistance to protect human health and the environment; however it has been significantly limited by the complicated modification method and non-ideal catalytic activity. Herein, we report a facile dimensionality-reduction strategy to improve the catalytic activity of MOF-based nanozymes. By reducing the dimensionality of two-dimensional Co-TCPP(Fe) (Co-Fe NSs) to zero-dimensional Co-TCPP(Fe) (Co-Fe NDs), the peroxidase-like activity of the prepared bimetallic Co-Fe NDs was almost tripled. Consequently, the bimetallic Co-Fe NDs can highly efficiently catalyze the lower-concentration H2O2 into reactive oxygen species (ROS), resulting in a favorable antibacterial effect against methicillin-resistant Staphylococcus aureus (MRSA). Meanwhile, Co-Fe NDs can effectively promote wound healing and water environment disinfection with good biocompatibility. This work reveals the potential of a zero-dimensional bimetallic MOF-based nanozyme in resisting drug-resistant bacteria and holds great promise for future clinical and environmental applications.
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