Synthesis, dissolution, and regeneration of silver nanoparticles stabilized by tannic acid in aqueous solution

  • Aiqin ZhangEmail author
  • Yuanhua Xiao
  • Paramita Das
  • Linsen Zhang
  • Yong Zhang
  • Hua Fang
  • Lixia Wang
  • Yang Cao
Research Paper


Silver nanoparticles (AgNPs), especially with small size, are easy to release silver ion in aqueous solution owing to various reasons, which would significantly affect the stability, properties, and application of AgNPs. In this paper, monodisperse AgNPs with small size of ca. 10 nm were successfully prepared based on solid-state reactions. Ascorbic acid (AA) was used as reductant and tannic acid (TA) was used both as reductant and stabilizer in this environmentally friendly reaction. The dissolution and regeneration of the as-prepared TA-AgNPs in pure water were investigated by UV−vis spectra, TEM observations, and differential pulse anodic stripping voltammetry. The results indicated that the TA-AgNPs showed a little higher dissolution than conventional PVP-coated ones with similar size. However, the dissolved silver ion in the TA-AgNPs aqueous solution could be recovered just by adjusting the pH of the solution, which could be attributed to the reductant performance of TA at alkaline conditions. After regeneration, some smaller nanoparticles appeared in TA-AgNPs aqueous solution, indicating that new nucleation formed and the dissolved silver ions were actually recovered to Ag0.

Graphical abstract


Silver nanoparticles Tannic acid Dissolution Regeneration Anodic stripping voltammetry Metal nanomaterials 


Funding information

This work was supported by the National Natural Science Foundation of China (Grant No. 21501152), the Key Program of Henan Province for Science and Technology (Grant No. 172102210067), and the Doctoral Research Foundation of Zhengzhou University of Light Industry (Grant No. 2014BSJJ057).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

All relevant ethical standards were satisfied.

Supplementary material

11051_2019_4563_MOESM1_ESM.docx (292 kb)
ESM 1 (DOCX 291 kb)


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Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  1. 1.State Laboratory of Surface and Interface Science and Technology, Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological RestorationZhengzhou University of Light IndustryZhengzhouPeople’s Republic of China
  2. 2.Department of Chemical EngineeringIndian Institute of Science Education and Research (IISER) BhopalBhopalIndia

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