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Effects of Dispersing Agents on Dispersion Behavior of Nano-Titania Powders

Sun Xiu-guo

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Abstract

The nanometer-sized titania is an important high performance fine inorganic materials.It has very high additional value.Because of its surface strong polarity and easy aggregationi,ts practical use is limited.The effects of different dispersing agents(NaCl,(NaPO3)6,NaOH and Na2SiO3) on dispersion behavior of nano-titania powders(anatase spherical TiO2,average size 70nm) in aqueous solution by spectrophotometric method are analyzed.The experimental results indicated that when pH is 6～10,the satisfactory and stable dispersion TiO2 in aqueous solution was obtained using NaCl as dispersant which is 0.3% of TiO2 in mass.

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What this paper is about

The nanometer-sized titania is an important high performance fine inorganic materials.It has very high additional value.Because of its surface strong polarity and easy aggregationi,ts practical use is limited.The effects of different dispersing agents(NaCl,(NaPO3)6,NaOH and Na2SiO3) on dispersion behavior of nano-titania powders(anatase spherical TiO2,average size 70nm) in aqueous solution by spectrophotometric method are analyzed.The experimental results indicated that when pH is 6～10,the satisfactory and stable dispersion TiO2 in aqueous solution was obtained using NaCl as dispersant which is 0.3% of TiO2 in mass.

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Available abstract

The nanometer-sized titania is an important high performance fine inorganic materials.It has very high additional value.Because of its surface strong polarity and easy aggregationi,ts practical use is limited.The effects of different dispersing agents(NaCl,(NaPO3)6,NaOH and Na2SiO3) on dispersion behavior of nano-titania powders(anatase spherical TiO2,average size 70nm) in aqueous solution by spectrophotometric method are analyzed.The experimental results indicated that when pH is 6～10,the satisfactory and stable dispersion TiO2 in aqueous solution was obtained using NaCl as dispersant which is 0.3% of TiO2 in mass.

Key concepts: Dispersant, Dispersion (optics), Anatase, Aqueous solution, Materials science, Nanometre, Nano-, Chemical engineering

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