Synthesis of Hollow Silica Particle by Combination of Bubble Templating Method and Sol-Gel Transformation

Yong Sheng Han; Y. Tarutani; Masayoshi Fuji; Minoru Takahashi

doi:10.4028/www.scientific.net/AMR.11-12.673

Paper Titles

Influence of Anodizing Process on Cohesive Property of Anodic Films on Aluminum Alloy with Rubber
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Diffusion-Rolling Bonding of Polycrystalline Metal in Two-Phase Region and Effect of Bonding Temperature
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Anodic Oxidation Parameters on Al-Cu Alloy Anodizing Film's Electrochemical Ability by EIS
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Synthesis of Nanosized Silica Powder by Ultrasonic Process
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Synthesis of Hollow Silica Particle by Combination of Bubble Templating Method and Sol-Gel Transformation
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Influence of Inorganic Ion on the Synthesis of Hollow Calcium Carbonate
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Characterization of Heterocoagulation by Direct Observation Technique
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Centrifugal Sintering - Development of a New Pressure Sintering Process -
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Orientation Factor of Grain Oriented Bismuth Titanate Prepared in High Magnetic Field
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Synthesis of Hollow Silica Particle by Combination of Bubble Templating Method and Sol-Gel Transformation

Abstract:

The feasibility of bubble templating method to prepare hollow particles was tested in this paper by passing a bubble into a silica sol. The silica sol was prepared by mixing TEOS, water, alcohol and hydrochloric acid. To control the gel point, the reactants and their concentrations were varied in each experiment. After the sol was prepared, an ammonia bubble was introduced into the prepared sol through a capillary tube. With the catalysis of ammonia, the silica sol gelled on the surface of bubble and formed a hollow gel particle. The nucleation of silica gel on the surface of bubble was discussed in this paper.