Influence of pH on the Stability Characteristics of Nanofluids

Author

Huang, Jin ; Wang, Xianju ; Long, Qiong ; Wen, Xueyi ; Zhou, Yunjin ; Li, Liming

Author_Institution

Sch. of Chem. & Energy Eng., South China Univ. of Technol., Guangzhou, China

fYear

2009

fDate

14-16 Aug. 2009

Firstpage

1

Lastpage

4

Abstract

In this paper, we investigated the dispersion behavior of two particular water-based nanofluids, namely water-Al₂O₃ and water-Cu mixtures. Under different pH values the absorbency and zeta potential of the nanofluids were measured. The results showed that the stability of nanofluids was highly dependent on pH values, an optimal pH value can result in the highest stability of the nanofluids. The calculated Derjaguin-Landau-Verwey-Overbeek (DLVO) inter-particle interaction potentials verified the experimental results of the pH effect on the stability behavior.

Keywords

alumina; copper; electrokinetic effects; flow instability; nanofluidics; pH; two-phase flow; Derjaguin-Landau-Verwey-Overbeek interparticle interaction potentials; absorbency; dispersion behavior; nanofluids stability; pH values; particular water-based nanofluids; water-Al₂O₃ mixtures; water-Cu mixtures; zeta potential; Aluminum oxide; Chemical technology; Coagulation; Electrokinetics; Nanoparticles; Powders; Power engineering and energy; Stability; Thermal conductivity; Ultrasonic variables measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Photonics and Optoelectronics, 2009. SOPO 2009. Symposium on

Conference_Location

Wuhan

Print_ISBN

978-1-4244-4412-0

Type

conf

DOI

10.1109/SOPO.2009.5230102

Filename

5230102