Method for sedimentation of colloidal semiconductor particles in aqueous suspension, involves adjusting suspension to isoelectric point of particles, where suspension supplies counter-current of another suspension

摘要

The method involves adjusting a suspension (1) to the isoelectric point of the particles, where the suspension supplies counter-current of another suspension (2). The colloidal semiconductor particles in aqueous suspension of a higher concentration relative to the former suspension contain the sedimented and separated semiconductor particles.