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A Study on Preparation and Stabilizing Mechanism of Hydrophobic Silica Nanofluids

Petroleum Engineering, State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao 266580, Shandong, China
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Materials 2018, 11(8), 1385; https://doi.org/10.3390/ma11081385
Received: 3 July 2018 / Revised: 31 July 2018 / Accepted: 7 August 2018 / Published: 8 August 2018
Nanofluids have increasingly drawn interest in recent years with their various applications in a number of fields. The method for the preparation of stable nanofluids is a key concern for extending the application of nanofluids. This study focuses on the effect of pH, dosage of surfactant (TX-100), and nanofluid concentration on the stability of a silica nanofluid. Particle size and zeta potential are two important factors to consider in evaluating the stability of the silica nanofluid. Results indicate that the stability of the silica nanofluid highly depends on pH, dosage of surfactant (TX-100), and nanofluid concentration. On the basis of these experiments, the best conditions for the preparation of a silica nanofluid are 0.1 wt. % for the concentration of silica nanoparticles and TX-100 and 10 for pH. A transparent and stable silica nanofluid can thus be obtained. View Full-Text
Keywords: silica nanoparticle; nonionic surfactant; particle size; zeta potential; stability silica nanoparticle; nonionic surfactant; particle size; zeta potential; stability
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Zhao, M.; Lv, W.; Li, Y.; Dai, C.; Zhou, H.; Song, X.; Wu, Y. A Study on Preparation and Stabilizing Mechanism of Hydrophobic Silica Nanofluids. Materials 2018, 11, 1385.

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