Dispersion of TiO2 Nanoparticles in Aqueous Solution
Stable TiO2 aqueous dispersion with an averaged secondary particle size of about 10 nm was achieved by using commercially available dispersant Di-7N. The stability of the dispersion was measured by Zeta-potential test. And the results showed that the optimal mass fraction of Di-7N was 12 wt%. The adsorption mechanism examined by FTIR analysis indicates that the carboxylate groups in Di-7N is absorbed on the surface of nano-TiO2 particles and the adsorbed structure is proposed to be bidentate chelating.
Junichi Hojo, Tohru Sekino, Jian Feng Yang, Hyung Sun Kim and Wen Bin Cao
W. X. Liu et al., "Dispersion of TiO2 Nanoparticles in Aqueous Solution", Materials Science Forum, Vol. 922, pp. 8-13, 2018