CdO nanoparticles were prepared with addition of CTAB surfactant with increasing concentration(0.04M, 0.08M and 0.12M) of CTAB. Crystallite size is increasing with increasing of concentration.How?
The CMC of CTAB is 0.0009 mol/L in water. Working with concentrations over CMC may lead to adsorption of micelles on the nanoparticles surface. This may cause hydrophobic interactions between nanoparticles and agglomeration.