Influence of Sonication on the Stability and Thermal Properties of Al2O3 Nanofluids
Nanofluids containing Al2O3 nanoparticles (either 11 or 30 nm in size) dispersed in distilled water at low concentrations (0.125–0.5 wt%) were prepared using two different ultrasonic devices (a probe and a bath sonicator) as the dispersant. The effect of the ultrasonic system on the stability and th...
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doaj-282a0f94462f452084962a80d82e90682020-11-25T00:25:32ZengHindawi LimitedJournal of Nanomaterials1687-41101687-41292014-01-01201410.1155/2014/612417612417Influence of Sonication on the Stability and Thermal Properties of Al2O3 NanofluidsMonir Noroozi0Shahidan Radiman1Azmi Zakaria2School of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia (UKM), 43600 Bangi, Selangor, MalaysiaSchool of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia (UKM), 43600 Bangi, Selangor, MalaysiaDepartment of Physics, Faculty of Science, Universiti Putra Malaysia (UPM), 43400 Serdang, Selangor, MalaysiaNanofluids containing Al2O3 nanoparticles (either 11 or 30 nm in size) dispersed in distilled water at low concentrations (0.125–0.5 wt%) were prepared using two different ultrasonic devices (a probe and a bath sonicator) as the dispersant. The effect of the ultrasonic system on the stability and thermal diffusivity of the nanofluids was investigated. Thermal diffusivity measurements were conducted using a photopyroelectric technique. The dispersion characteristics and morphology of the nanoparticles, as well as the optical absorption properties of the nanofluids, were studied using photon cross correlation spectroscopy with a Nanophox analyzer, transmission electron microscopy, and ultraviolet-visible spectroscopy. At higher particle concentration, there was greater enhancement of the thermal diffusivity of the nanofluids resulting from sonication. Moreover, greater stability and enhancement of thermal diffusivity were obtained by sonicating the nanofluids with the higher power probe sonicator prior to measurement.http://dx.doi.org/10.1155/2014/612417 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Monir Noroozi Shahidan Radiman Azmi Zakaria |
spellingShingle |
Monir Noroozi Shahidan Radiman Azmi Zakaria Influence of Sonication on the Stability and Thermal Properties of Al2O3 Nanofluids Journal of Nanomaterials |
author_facet |
Monir Noroozi Shahidan Radiman Azmi Zakaria |
author_sort |
Monir Noroozi |
title |
Influence of Sonication on the Stability and Thermal Properties of Al2O3 Nanofluids |
title_short |
Influence of Sonication on the Stability and Thermal Properties of Al2O3 Nanofluids |
title_full |
Influence of Sonication on the Stability and Thermal Properties of Al2O3 Nanofluids |
title_fullStr |
Influence of Sonication on the Stability and Thermal Properties of Al2O3 Nanofluids |
title_full_unstemmed |
Influence of Sonication on the Stability and Thermal Properties of Al2O3 Nanofluids |
title_sort |
influence of sonication on the stability and thermal properties of al2o3 nanofluids |
publisher |
Hindawi Limited |
series |
Journal of Nanomaterials |
issn |
1687-4110 1687-4129 |
publishDate |
2014-01-01 |
description |
Nanofluids containing Al2O3 nanoparticles (either 11 or 30 nm in size) dispersed in distilled water at low concentrations (0.125–0.5 wt%) were prepared using two different ultrasonic devices (a probe and a bath sonicator) as the dispersant. The effect of the ultrasonic system on the stability and thermal diffusivity of the nanofluids was investigated. Thermal diffusivity measurements were conducted using a photopyroelectric technique. The dispersion characteristics and morphology of the nanoparticles, as well as the optical absorption properties of the nanofluids, were studied using photon cross correlation spectroscopy with a Nanophox analyzer, transmission electron microscopy, and ultraviolet-visible spectroscopy. At higher particle concentration, there was greater enhancement of the thermal diffusivity of the nanofluids resulting from sonication. Moreover, greater stability and enhancement of thermal diffusivity were obtained by sonicating the nanofluids with the higher power probe sonicator prior to measurement. |
url |
http://dx.doi.org/10.1155/2014/612417 |
work_keys_str_mv |
AT monirnoroozi influenceofsonicationonthestabilityandthermalpropertiesofal2o3nanofluids AT shahidanradiman influenceofsonicationonthestabilityandthermalpropertiesofal2o3nanofluids AT azmizakaria influenceofsonicationonthestabilityandthermalpropertiesofal2o3nanofluids |
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1725348452704976896 |