Stability Analysis of Water-Based Nanofluids Prepared by Using Supersonic Dispersion Method


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Several water-based nanofluids were prepared under the action of surfactant by using ultrasonic dispersion method. The absorbency and viscosity of the nanofluids prepared under different conditions were measured and analyzed. The results showed that, when the mass fractions of nanoparticles were 0.2%, the most appropriate surfactants for Al2O3, FeO, γ-Fe2O3 water-based nanofluids were SDBS (Sodium Dodecyl Benzene Sulfonate), ACT (ammonium citrate), CTAB (Cetyltrimethyl Ammonium Bromide), respectively and the optimum mass fractions of the surfactants corresponding to the three nanofluids were 0.2%, 0.1%, 0.2%, respectively, to obtain the best dispersion stability. The optimum ultrasonic condition was 60 min of ultrasonic time under 300 W of ultrasonic power or 90 min of ultrasonic time under 200 W of ultrasonic power, in which the water-based nanofluids had the largest absorbency, the smallest viscosity and the strongest stability. In addition, the greater the size of the nanoparticles the easilier the reunion, and the poorer the dispersion stability was. When the pH value was about 4, the absorbency of Al2O3 nanofluid was larger and the dispersion stability was better. The inherent mechanism of keeping stability of nanofluids was discussed.



Advanced Materials Research (Volumes 383-390)

Edited by:

Wu Fan




W. D. Wu et al., "Stability Analysis of Water-Based Nanofluids Prepared by Using Supersonic Dispersion Method", Advanced Materials Research, Vols. 383-390, pp. 6174-6180, 2012

Online since:

November 2011




[1] Choi S.U. S, Enhancing thermal conductivity of fluids with nanoparticales, New York: ASME, 1995, 66: 99-105.

[2] XUAN Y M, Li Q, Heat transfer enhancement of nanofluids, Journa of Heat and Fluid Flow, 2000, 21: 58-64.

[3] NGUYEN C T , ROY G, GAUTHIER C, et al, Heat transfer enhancement using AL2O3-water nanofluid for an electronic liquid cooling system, Applied Thermal Engineering, 2007, 27: 1501-1506.


[4] HE Y R, JIN Y, CHEN H S, et al, Heat transfer and flow behaviour of aqueous suspensions of TiO2 nanoparticles(nanofluids) flowing upward through a vertical pipe, International Journal of Heat and Mass Transfer, 2007, 50: 2272-2281.


[5] KIM J K, JUNG J Y, KANG Y T, Absorption performance enhancement by nano-particales and chemical surfactants in binary nanofluids, Internaltional Journal of Refrigeration, 2007, 30: 50-57.


[6] MA X H, SU F M, CHEN J B, et al, Heat and mass transfer enhancement of the bubble absorption for a binary nanofluid, Journal of Mechanical Science and Technology, 2007, 21: 1813-1818.


[7] SHENG Wei, WU Weidong, ZHANG Hua, Enhancing influence of Al_2O_3 nano-particles on ammonia bubble absorption process, Journal of Chemical Industry and Engineering, 2008, 59(11): 2762-2767.

[8] HONG Huanxi, WU Weidong, SHENG Wei, Research progress of preparation of nanofluids, Chemical Industry and Engineering Progress , 2008, 27(12): 1926-(1931).

[9] ZHU Dongsheng, LI Xinfang, WANG Xianju, Study on preparation and dispersion behavior of Al_2O_3-H_2O nanofluids, New Chemical Materials, 2007, 35(9): 45-47.

[10] PENG Xiao-fei, YU Xiao-li, XIA Li-feng, Influence factors on suspension stability of nanofluids, Journal of Zhejiang University(Engineering Science), 2007, 41(4): 577-580.

[11] HWANG Y J, LEE J K, LEE J K, et al, Production and dispersion stability of nanoparticles in nanofluids, Powder Technology, 2008, 186(2): 145- 153.

[12] CUI Sheng, SHEN Xiao-dong, XIAO Su, Surface Treatment and Dispersibility of SiC Nanoparticles, Fine Chemicals, 2008, 25(4): 318-320.

[13] SONG Xiao-Lan, WU Xue-Lan, Qu peng, Effect Factor and Function Mechanism on Dispersion and Stability of SiO2 Nanoparticles, Bulletin of the Chinese Ceramic Society, 2005, 24(1) : 3-7.

[14] LUO Jian-lin, DUAN Zhong-dong, The Dispersion Effect of Diversified Surfactants on Multi-walled Carbon Nanotube in Aqueous Solution, Fine Chemicals, 2008, 25(8): 733-738.

[15] WU Wei, CHEN Jianfeng, LU Shouci, ULTRA-FINE POWDER SURFACE MODIFICATION, China Particuology, (2004).


[16] HWANG Y, Lee J K, LEE C H, et al, Stability and thermal conductivity, characteristics of nanofluids, Thermochimica Acta, 2007, 455: 70-7.


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