Chung-Shan Institute of Science and Technology

Ming-Tseh Tsay

Seng-Min Chang

Zong-Whie Shih

Pao-Yen Lin

A method for separating metal nanoparticles from colloidal metal solution includes providing a colloidal metal solution, including a plurality of metal nanoparticles; mixing a precipitating agent with the colloidal metal solution for maintaining the power of hydrogen value (pH) of the colloidal metal solution in a specific value; keeping the colloidal metal solution stationary for a static time at an environmental temperature such that the metal nanoparticle precipitates from the colloidal metal solution, and the colloidal metal solution forms a supernatant and a precipitating liquid; separating a precipitate from the precipitating liquid by a filtering process; and liquid blasting the precipitate by a first solvent to obtain the metal nanoparticles.

Method for separating metal nanoparticles from colloidal metal solution

A method of fabricating barium titanate powders uses titanium tetrachloride and barium hydroxide as reactants in a reaction solution. The pH value of the reaction solution is adjusted to strongly alkaline range by adding potassium hydroxide. Nitrogen is charged into a reaction tank at normal pressure, and the reaction solution is heated at 80&#x2013;102&#xb0;. The solution is intensively stirred at constant temperature, and then subjected to a hydro-thermal reflux. Then, the solution is treated through an ion exchange resin and dried to obtain a cubic BaTiOpowders.

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Taoyuan County, Taiwan

Ming-Tseh Tsay