Rapid preparation of uniform colloidal indium hydroxide by the controlled double-jet precipitation.

The synthesis of uniform colloidal rod-like In(OH)₃ particles from relatively concentrated solutions of InCl₃ (0.1 mol dm^-3) in short reaction time (<15 min) by the controlled double-jet precipitation (CDJP) technique is described. The effects of the molar ratio of [NH₄OH]/[InCl₃], temperature, concentration of the reactants, and reaction time on the size and shape of the final products are investigated. It is found that such In(OH)₃ particles are formed by aggregation of nanosize subunits. [ABSTRACT FROM AUTHOR]