Fabrication, characterization, and thermal property evaluation of silver nanofluids

Monir Noroozi, Shahidan Radiman, Azmi Zakaria, Sepideh Soltaninejad

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Silver nanoparticles were successfully prepared in two different solvents using a microwave heating technique, with various irradiation times. The silver nanoparticles were dispersed in polar liquids (distilled water and ethylene glycol) without any other reducing agent, in the presence of the stabilizer polyvinylpyrrolidone (PVP). The optical properties, thermal properties, and morphology of the synthesized silver particles were characterized using ultraviolet-visible spectroscopy, photopyroelectric technique, and transmission electron microscopy. It was found that for the both solvents, the effect of microwave irradiation was mainly on the particles distribution, rather than the size, which enabled to make stable and homogeneous silver nanofluids. The individual spherical nanostructure of self-assembled nanoparticles has been formed during microwave irradiation. Ethylene glycol solution, due to its special properties, such as high dielectric loss, high molecular weight, and high boiling point, can serve as a good solvent for microwave heating and is found to be a more suitable medium than the distilled water. A photopyroelectric technique was carried out to measure thermal diffusivity of the samples. The precision and accuracy of this technique was established by comparing the measured thermal diffusivity of the distilled water and ethylene glycol with values reported in the literature. The thermal diffusivity ratio of the silver nanofluids increased up to 1.15 and 1.25 for distilled water and ethylene glycol, respectively.

Original languageEnglish
JournalNanoscale Research Letters
Volume9
Issue number1
DOIs
Publication statusPublished - 2014

Fingerprint

Silver
Ethylene Glycol
Ethylene glycol
Thermodynamic properties
thermodynamic properties
silver
glycols
Thermal diffusivity
Fabrication
ethylene
thermal diffusivity
fabrication
evaluation
microwaves
Microwave heating
Microwave irradiation
Water
Nanoparticles
nanoparticles
water

Keywords

  • Microwave heating
  • Nanofluids
  • Photopyroelectric
  • Silver nanoparticles
  • Thermal diffusivity

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Fabrication, characterization, and thermal property evaluation of silver nanofluids. / Noroozi, Monir; Radiman, Shahidan; Zakaria, Azmi; Soltaninejad, Sepideh.

In: Nanoscale Research Letters, Vol. 9, No. 1, 2014.

Research output: Contribution to journalArticle

Noroozi, Monir ; Radiman, Shahidan ; Zakaria, Azmi ; Soltaninejad, Sepideh. / Fabrication, characterization, and thermal property evaluation of silver nanofluids. In: Nanoscale Research Letters. 2014 ; Vol. 9, No. 1.
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