Structural evolution of indium hydroxide powders prepared by a precipitation method

초록

In this study, we investigated the phase and microstructural changes induced by heat-treatment of indium hydroxide nanoparticles produced by precipitation at various temperatures for different holding times. A white powder was obtained after heating for various times at temperatures of 150-900 degrees C. We also investigated changes in the specific surface area of indium oxide prepared by heating the precipitate between 200 and 900 degrees C. Finally, we propose a model for the formation of indium oxide powder from the precipitate. The model includes processes such as the formation of bundles of rod-shaped particles, generation of voids in the bundle from the evaporation of crystallized water, strong re-agglomeration of rod-shaped particles, collapse of the rod structure, formation of spherical agglomerates, heterogeneous crystal growth, and homogeneous crystal growth.

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