Applied Catalysis2022，Vol.3017.DOI:10.1016/j.apcatb.2021.120826

Defect-rich graphene stabilized atomically dispersed Cu-3 clusters with enhanced oxidase-like activity for antibacterial applications

Jiang, Hong Xia, Lixin Liu, Hongyang Ma, Ding Chen, Yunlei Cai, Xiangbin Huang, Fei Yang, Lini Liu, Xiao Li, Tao Wen, Xiaodong Wang, Ning Xiao, Dequan Meng, FanChi Peng, Mi
Applied Catalysis2022，Vol.3017.DOI:10.1016/j.apcatb.2021.120826
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  • NSTL
  • Elsevier

Defect-rich graphene stabilized atomically dispersed Cu-3 clusters with enhanced oxidase-like activity for antibacterial applications

Jiang, Hong 1Xia, Lixin 2Liu, Hongyang 3Ma, Ding 4Chen, Yunlei 2Cai, Xiangbin 1Huang, Fei 1Yang, Lini 1Liu, Xiao 4Li, Tao 5Wen, Xiaodong 6Wang, Ning 1Xiao, Dequan 3Meng, FanChi Peng, Mi
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作者信息

  • 1. Liaoning Univ, Dept Chem, 66 Congshan Rd, Shenyang 110036, Liaoning, Peoples R China
  • 2. Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
  • 3. Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China
  • 4. Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Peoples R China
  • 5. Hong Kong Univ Sci & Technol, Dept Phys, Kowloon, Clear Water Bay, Hong Kong, Peoples R China
  • 6. Univ New Haven, Ctr Integrat Mat Discovery, Dept Chem & Chem Engn, 300 Boston Post Rd, West Haven, CT 06516 USA
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Abstract

Nanozyme has attracted great attention due to its diverse enzymatic catalytic activities. But there are still challenges in constructing novel nanozyme with robust catalytic activity. Here, we report an atomically dispersed and fully exposed Cu-3 cluster stabilized on defect-rich nanodiamond-graphene hybrid support (Cu-3/ND@G) with unique active adsorption sites, which benefit the adsorption and cleavage of O-2, resulting in enhanced oxidase-like and antibacterial activity. The catalytic rate constant of Cu-3/ND@G (K-cat = 1.474 x 10(-1) s(-1)) is higher than those of previously reported copper single atom oxidase mimics (0.5 x 10(-3) s(-1)) and even the commercial Pt/C mimics (1.01 x 10(-2) s(-1)). DFT calculation revealed that the atomically dispersed Cu-3 cluster as active center significantly improves the oxidase-like activity, attributing to the easy dissociation of O-2 into reactive oxygen species (center dot OH). The atomically dispersed Cu-3 cluster with an antibacterial rate of 100% in the NaAc buffer presents its potential application in the field of antibacterial materials.

Key words

Atomic dispersion/Cu cluster/Defect-rich graphene/Oxidase-like activity/Antibacterial

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出版年

2022
Applied Catalysis

Applied Catalysis

ISSN：0926-3373
被引量28
参考文献量35
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