Investigation the effect of various factors on the stability of nanofluids containing metal oxide nanoparticles based on ethylene glycol

Ahangarpour, Ameneh; Shakhi, Amal; Farbod, Mansoor

doi:10.22055/jrmbs.2026.20897

Investigation the effect of various factors on the stability of nanofluids containing metal oxide nanoparticles based on ethylene glycol

Document Type : Full length research Paper

Authors

Ameneh Ahangarpour

Amal Shakhi

Mansoor Farbod

Department of Physics, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran

10.22055/jrmbs.2026.20897

Abstract

In this study, nanofluids containing metal oxide nanoparticles (ZnO, CuO, and Zn0.97Cu0.03O) were prepared based on ethylene glycol with 0.1, 0.25, and 0.5 wt.%. The effect of various factors, including the type of ultrasonic device, ultrasonic time, addition of sodium dodecyl sulfate (SDS) as a surfactant, and surface modification of metal oxide nanoparticles using a mixture of oleic acid and oxylene on the stability of the samples was investigated. For functionalization of the nanoparticles, a mixture of oleic acid and oxylene was used with different ratios of 3%, 5%, 7%, 9%, 10%, 30%, 40%, and 50%. The results showed that the ratio of oleic acid to oxylene of 50% had the highest stability compared to other samples. UV-vis spectroscopy was used to investigate the stability of the nanofluids. The results showed that the functionalization of nanoparticles had the greatest effect on the stability of the samples, as the nanofluids containing functionalized nanoparticles were stable for about 12 days. It was also observed that for synthesis the samples, probe ultrasonication is more suitable than bath ultrasonication.

Keywords

Metal oxide nanoparticles

Nanofluids

Stability

Oleic acid

Oxylene

UV-vis spectroscopy

Subjects

Interdisciplinary fields

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