Preparation and properties of uniform coated colloidal particles. VII. Silica on hematite |
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| Authors: | Masahiro Ohmori Egon Matijevi&#x; |
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| Institution: | Masahiro Ohmori,Egon Matijevi? |
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| Abstract: | Spindle-type hematite particles of narrow size distribution were coated with uniform layers of silica by hydrolysis of tetraethylorthosilicate (TEOS) in 2-propanol. The effects of the reaction time and initial concentrations of ammonia and water on the thickness of the silica shell were investigated and the rate of the coating process, in terms of the TEOS concentration, was evaluated. |
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