Title :
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
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;
Conference_Titel :
Photonics and Optoelectronics, 2009. SOPO 2009. Symposium on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-4412-0
DOI :
10.1109/SOPO.2009.5230102
