Facile Synthesis of Silver Nanoparticles and Preparation of Conductive Ink

Gui Bing Hong, Yi Hua Luo, Kai Jen Chuang, Hsiu Yueh Cheng, Kai Chau Chang, Chih Ming Ma

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


In the scientific industry, sustainable nanotechnology has attracted great attention and has been successful in facilitating solutions to challenges presented in various fields. For the present work, silver nanoparticles (AgNPs) were prepared using a chemical reduction synthesis method. Then, a low-temperature sintering process was deployed to obtain an Ag-conductive ink preparation which could be applied to a flexible substrate. The size and shape of the AgNPs were characterized by ultraviolet–visible spectrophotometry (UV-Vis) and transmission electron microscopy (TEM). The experiments indicated that the size and agglomeration of the AgNPs could be well controlled by varying the reaction time, reaction temperature, and pH value. The rate of nanoparticle generation was the highest when the reaction temperature was 100C within the 40 min reaction time, achieving the most satisfactorily dispersed nanoparticles and nanoballs with an average size of 60.25 nm at a pH value of 8. Moreover, the electrical resistivity of the obtained Ag-conductive ink is controllable, under the optimal sintering temperature and time (85C for 5 min), leading to an optimal electrical resistivity of 9.9 × 10−6 Ω cm. The results obtained in this study, considering AgNPs and Agconductive ink, may also be extended to other metals in future research.

Original languageEnglish
Article number171
Issue number1
Publication statusPublished - Jan 2022


  • Chemical reduction
  • Conductive ink
  • Electrical resistivity
  • Silver nanoparticles

ASJC Scopus subject areas

  • General Chemical Engineering
  • General Materials Science


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