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Functionalized silver nanoparticles with graphene quantum dots shell layer for effective antibacterial action

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Abstract

Graphene quantum dots (GQDs) as a shell layer was coated on the surface of silver nanoparticles (AgNPs) to obtain an effective antibacterial composite (GQDs@AgNPs). The structures and antibacterial properties of AgNPs, GQDs, and GQDs@AgNPs were studied. SEM and TEM results indicated that GQDs were coated on the surface of AgNPs. For GQDs@AgNPs, the core size of AgNPs was about 20 nm, and the shell thickness of GQDs was about 5 nm. The formation and antibacterial mechanism of GQDs@AgNPs composite materials were discussed in detail. It showed excellent antibacterial properties for E. coli and S. aureus.

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Funding

This work was supported by the funding of Key R&D Program Projects in Shanxi Province (Grant No. 2017030321015-4), the Scientific and Technological Innovation Project for Excellent Talents in Shanxi Province (Grant No. 201805D211001), the National Natural Science Foundation of China (Grant No. 51302183), and the Natural Science Foundation of Shanxi Province (Grant No. 201801D121096).

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Authors and Affiliations

  1. Shanxi Bethune Hospital, Taiyuan, 030032, China

    Li Zhang & Chao Zhang

  2. College of Textile Engineering, Taiyuan University of Technology, Yuci, 030600, China

    Liyuan Liu, Jie Wang & Mei Niu

  3. Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Ministry of Education, Taiyuan, 030024, China

    Mei Niu & Yongzhen Yang

  4. The Second Hospital of Shanxi Medical University, Taiyuan, 030001, China

    Shiping Yu

  5. Research Center on Advanced Materials science and Technology, Taiyuan University of Technology, Taiyuan, 030024, China

    Yongzhen Yang

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  1. Li Zhang
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  2. Liyuan Liu
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  3. Jie Wang
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  4. Mei Niu
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  5. Chao Zhang
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  6. Shiping Yu
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  7. Yongzhen Yang
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Correspondence to Li Zhang or Mei Niu.

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Zhang, L., Liu, L., Wang, J. et al. Functionalized silver nanoparticles with graphene quantum dots shell layer for effective antibacterial action. J Nanopart Res 22, 124 (2020). https://doi.org/10.1007/s11051-020-04845-3

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