Abstract
CaO-SiO2 amorphous powder were coated with calcium phosphate in order to apply the coated powder as an adsorbent, which has large surface area and various adsorption sites. The coating of the amorphous powder, which was 0.5μm in particle size, led to be the formation of low-crystalline HAp powder that has the particle size of 20μm. The morphology of the coated powder was independent of the compositions in core powders but would depend on only the Ca2+ and PO43- concentrations in coating solutions.
