| 초록 |
Colloidal ZnO particles with narrow size distribution were prepared via a sol-gel process by base-catalyzed hydrolysis of zinc nitrate. The size of theses ZnO particles were in the nanosize and their physical shape depende on HPC as an dispersing agent. Nanosized ZnO particles were also obtained by precipitation method based on zinc-2-ethylhexagonate. The precipitates were characterized by XRD, BET, TEM, FE-SEM, DLS and ELS. The ZnO colloids, i,e the aggregates tend to self-assemble into well-ordered hexagonal close-packed structures. As a result ZnO nanoparticles with an average diameter was nearly 40 nm and the size distribution was narrowed. |
