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Facile synthesis of elemental silver by the seed nucleus embedding method for antibacterial applications

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Abstract

The preparation method of Silver (Ag)-loaded cellulose paper based on the formation of seed nuclei has been proposed as a functional material with high antibacterial performance. Metal palladium (Pd) was employed for the formation of seed nuclei, followed by sodium potassium tartrate tetrahydrate reduction to create Pd–Ag-cellulose paper. The properties in term of micro morphology, distribution of silver particles, antibacterial activity and silver release behavior were investigated. The results verified the formation of Pd-nucleus on surface of fiber, and revealed that silver particles were steadily deposited on the fibers based on the seed nuclei embedded. Pd–Ag-cellulose paper, comparing with Ag-cellulose paper produced with direct deposition method, exhibited a thick closely silver layer and uniform distribution of silver particles. The antibacterial test indicated that the lethality rate of Pd–Ag-cellulose paper against E. coli is 99.92% which is very close to that of Ag-cellulose paper (99.93%). Nevertheless, the silver release regression equation provided a high slope value (0.075) to Ag-cellulose paper, which explains a rapid release of silver. Pd–Ag-cellulose paper, by contrast, the slope value is only 0.021, and that indicates the silver slower release was achieved. Ag-loaded cellulose paper prepared using the proposed method shows the prominent properties in silver loading, antibacterial and silver slow-release.

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Acknowledgments

The present work was financially supported by the Natural Science Foundation of Shandong (ZR2017LEM009), the National Natural Science Foundation of China (Grant Nos. 31600472, 31570566, 31500489, 31770626, 31670590) and the Taishan Scholars Program.

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Authors and Affiliations

  1. State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, People’s Republic of China

    Honglei Chen, Xin Zhao, Yu Liu, Fangong Kong & Xingxiang Ji

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  1. Honglei Chen
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  2. Xin Zhao
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  3. Yu Liu
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  4. Fangong Kong
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  5. Xingxiang Ji
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Correspondence to Honglei Chen or Xin Zhao.

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Chen, H., Zhao, X., Liu, Y. et al. Facile synthesis of elemental silver by the seed nucleus embedding method for antibacterial applications. Cellulose 25, 5289–5296 (2018). https://doi.org/10.1007/s10570-018-1952-7

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  • DOI: https://doi.org/10.1007/s10570-018-1952-7

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