Korean Journal of Chemical Engineering

, Volume 36, Issue 11, pp 1882–1889 | Cite as

Prolonged antimicrobial activity of silver core-carbon shell nanoparticles

  • Zengkai Wang
  • Tianke Wang
  • An Hua
  • Song MaEmail author
  • Zhidong Zhang
  • Lei LiuEmail author


Ag nanoparticles present good antimicrobial activity but with a potential toxicity to the cell, which limits the application. To address this issue, in this work, carbon-encapsulated sliver nanocapsules (Ag@C nanocapsules) were prepared by evaporating pure Ag ingot with the modified arc-discharge technique, and the Ag@C nanocapsules were acidified with nitric acid subsequently to facilitate the silver ion to release. Finally, Ag@C nanocapsules displayed a good and sustained antimicrobial activity against E. coli as a model of Gram-negative bacteria, due to the long-term release of sliver ions from Ag@C nanocapsules. The results obtained in this work indicate that the Ag@C nanocapsules may be a suitable nanomaterial for the bactericidal application.


Antimicrobial Nanomaterials Ag@C Nanocapsules Carbon Shell Sustained Release 






degree centigrade














Ag@C nanocapsules

carbon-encapsulated metallic sliver nanocapsules


Ag nanoparticles


scanning electron microscopy


high resolution transmission electron microscope


X-ray diffraction


inductively coupled plasma optical emission spectrometer


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We acknowledge the financial sponsorship by the National Natural Science Foundation of China (51571195, 51871219, 51590883), We also gratefully acknowledge support of the National Key R&D Program of China (No. 2017YFA0206301).


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Copyright information

© The Korean Institute of Chemical Engineers 2019

Authors and Affiliations

  1. 1.School of Materials Science and Engineering and Institute for Advanced MaterialsJiangsu UniversityZhenjiangChina
  2. 2.Shenyang National Laboratory for Materials Science, Institute of Metal ResearchChinese Academy of SciencesShenyangChina
  3. 3.School of Materials Science and EngineeringUniversity of Science and Technology of ChinaHefeiChina

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