Fig. 5
a–c A SEM image of ZrO2 nanoparticles coated/dispersed by dispersant Dolapix CE64, under the addition of optimum amount 1.4 mass% of dispersant (a), and colorized HR-TEM images (b, c) of coated ZrO2 nanoparticle by a very thin (1–6 nm) shell of Dolapix CE64. Indexes show the overall thickness of very thin (1–6 nm) shell of dispersant coated on the surface of nanoparticle. Two different parts of particle are distinguished by apparent color: The dark (image b) and blue (image c) parts represent the original particle. The light or transparent (image b) and pink (image c) one on the edge represent polyelectrolyte coating. Shell polyelectrolyte indicated by arrows