Effects of Doping Ions on Particle Morphology and Preparation Process of Ultrafine α-FeOOH Particles

Effects of Cr（No₃)₃,ZnSO₄,MgSO₄,MnSO₄,Na₂SiO₃, super-dispersser and sodium citrate etc. on particle morphology and preparation process of ultrafine particles are studied. The results indicate that doping irons are not only attect the morphology and reaction rate of goethite preparation process,but also affect the structure of goethite particles, and this lead to the change of lattice constant and thermal properties, etc.