Preparation of Ni2+−Fe3+ Layered Double Hydroxide Material with High Crystallinity and Well-Defined Hexagonal Shapes

A new method for the preparation of Ni2+-Fe3+ LDH material with high crystallinity and well-defined hexagonal shapes was successfully developed by using urea as hydrolysis agent and trisodium citrate as chelating reagent under a hydrothermal condition at 150 °C for 2 days.