Experimental Study on the Thermal Conductivity of Silver Nanoparticles Synthesized Using Sargassum Angostifolium

  • Y. BakhshanEmail author
  • F. SamariEmail author
  • M. Ghaemi
  • S. Ghafarigousheh
  • A. Kakoee
Research Paper


A simple, fast and one-pot synthesis procedure based on the bio-reduction ability of an algal extract solution has been used to produce silver nanoparticles (AgNPs). The obtained colloids have been characterized by UV–Vis, TEM and XRD. Then, the thermal conductivity of the nanofluids containing 0.2, 0.4, and 0.6 wt% AgNP synthesized using Sargassum Angostifolium in deionized water was measured in the range of 25–85 °C. The thermal conductivity increases with increasing the temperature and particle concentrations. A maximum detraction and enhancement of 33% at 0.2 wt% and 25 °C and 31% at 0.6 wt% and 85 °C were observed. Silver–water nanofluid for each concentration has critical temperature of 51, 49 and 47 °C for mass fraction percentage of 0.2, 0.4 and 0.6, respectively. There is a decrease in thermal conductivity value below critical point of temperature so adding nanoparticle for application below these points is not recommended. The measurement of the thermal conductivity of this new kind of nanofluid showed that it is an ideal fluid for heat transfer because of great value in synthesizing nanoparticles with well-controlled sizes.


Thermal conductivity Silver nanofluid Green synthesis Sargassum Angostifolium 


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Copyright information

© Shiraz University 2018

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringUniversity of HormozganBandar AbbasIran
  2. 2.Department of Chemistry, College of SciencesUniversity of HormozganBandar AbbasIran
  3. 3.Department of Marine SciencesIranian National Institute of Oceanography and Atmospheric SciencesTehranIran
  4. 4.Department of Mechanical Engineering, Minab BranchIslamic Azad UniversityMinabIran

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