- Stability and Sedimentation Properties of TiO2 Nanoparticles
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S.H. Woo, M.K. Lee, C.K. Rhee
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J Korean Powder Metall Inst. 2006;13(4):263-268.
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DOI: https://doi.org/10.4150/KPMI.2006.13.4.263
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- In this study, the colloidal stability and sedimentation behavior of crystalline TiO_2 particles (300nm) in various organic solvents have been investigated by means of a backscattered light flux profile (Turbiscan). The backscattered light flux profiles revealed that the TiO_2 nanoparticles were readily sedimented in water, methyl alcohol, and ethyl alcohol due to a flocculation-induced particle growth, while a particle coalescence and a sedimentation of the TiO_2 nanoparticles were hardly observed in isopropyl alcohol. The migration velocities of the TiO_2 particle were measured as around 6.15/min, 12.53 m/min, 6.51m/min, and 0.18m/min for water, methyl alcohol, ethyl alcohol, and isopropyl alcohol, respectively, showing a remarkably slow migration of the TiO_2 particles in isopropyl alcohol.
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Citations
Citations to this article as recorded by  - Effects of Viscosity on Dispersion Stability of Nano CoAl2O4 Ceramic Ink
Ji-Hyeon Lee, Hae-Jin Hwang, Jin-Ho Kim, Kwang-Taek Hwang, Kyu-Sung Han
Journal of the Korean Ceramic Society.2015; 52(6): 497. CrossRef
- Synthesis of Aluminum Hydroxide Nanofiber by Electrolysis of Aluminum Plates
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S.H. Woo, M.K. Lee, C.K. Rhee
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J Korean Powder Metall Inst. 2006;13(2):108-111.
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DOI: https://doi.org/10.4150/KPMI.2006.13.2.108
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- Aluminum hydroxides were synthesized by a simple electrolytic reaction of aluminum plates. The aluminum hydroxide, boehmite (AlO(OH)), was predominantly formed in the application of electrical potential at and above 30V, while the mixture of bayerite (Al(OH)_3) and boehmite (AlO(OH)) phases were formed below 20V. The boehmite has a clear fibrous structure controlled on nanometer scale. On the contrary, the bayerite consists of the typical hourglass or semi-hourglass shaped coarse crystals as a result of aggregation of various crystals stacked together. The specific surface area of the boehmite nanofiber was markedly high, approaching at about 302;m2/g.
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Citations
Citations to this article as recorded by - Experimental Study on Microwave Drying Aluminum Hydroxide
Xuemei Zheng, Fuqin Yuan, Aiyuan Ma, Shihong Tian
Coatings.2024; 14(6): 687. CrossRef
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