Results showed that the homogenous rhombic goethite type particles with good gloss and dispersion were a-FeOOH; the average major axial diameter of the particles was 60-70nm, and average minor axial diameter was 10-20nm;

• TEM和XRD表明所制得样品为斜方晶系针状a-FeOOH结构,色泽鲜艳、粒径均匀、分散性好,长轴为60-70nm、短轴为10-20nm。