Rimer JD1, Roth DD, Vlachos DG, Lobo RF.
Langmuir. 2007 Feb 27;23(5):2784-91. Epub 2007 Jan 23.We show that germania nanoparticle self-assembly in basic aqueous solutions occurs at a critical aggregation concentration (CAC) corresponding to a 1:1 GeO2/OH- molar ratio. A combination of pH, conductivity, and small-angle X-ray scattering (SAXS) measurements was used to monitor the effect of incremental additions of germanium (IV) ethoxide to basic solutions of sodium hydroxide or tetraalkylammonium cations. Read More