Synthesis and influence of alkaline concentration on α-FeOOH nanorods shapes

Abstract

α-FeOOH nanorods having uniform morphology were synthesized by water bath process. X-ray diffraction and transmission electron microscopy revealed that the single-crystalline orthorhombic α-FeOOH nanorods are about 10 nm in diameter and hundreds of nanometer in length. The effect of concentration of KOH on morphology of α-FeOOH nanorods was investigated. pH values of solution play an important role in the process of transformation of ferrihydrite into goethite. The inconsistent growth rate along different facets can be effected by pH values of the solution. The influence and growth mechanism of α-FeOOH nanorods were discussed in detail. This method may be widely used as reference to fabricate other inorganic onedimensional nanostructured materials and easily realized in industrial-scale synthesis. © Indian Academy of Sciences.