T. Ishikawa et al., INFLUENCE OF THE ADSORPTION OF CITRATE AND TARTRATE IONS UPON THE FORMATION OF GAMMA-FEOOH PARTICLES, Colloids and surfaces. A, Physicochemical and engineering aspects, 71(2), 1993, pp. 141-146
Colloidal-gamma-FeOOH particles, synthesized by air oxidation of FeSO4
solutions in the presence of different amounts of citrate and tartrat
e ions, have been characterized by transmission electron microscopy, X
-ray diffraction, elemental analysis, etc. These ions, added to the st
arting solutions, interfered with the formation and growth of gamma-Fe
OOH crystals. The adsorption isotherms have been determined of citrate
and tartrate ions on gamma-FeOOH particles from solutions at various
pH values. The crystal growth at a low additive concentration was hind
ered mainly by their adsorption.