Different roles of hydrazine as a complexant, alkali resource and reductant on reacting with metal ions for material synthesis

Hydrazine (N 2 H 4 ) reduction is one of the simplest and most widely used method for the synthesis of various metal element-based micro-/nano-materials. However, the roles of N 2 H 4 during the chemical reaction are often diversified and subjected to further analysis. Here, Ni in turn produced its coordination compounds, hydroxide and pure metal with an increase in N 2 H 4 content, where N 2 H 4 plays diversified roles as a complexant, alkali resource and reductant, respectively. The elements Pr, Nd, Sm and Y exhibited high hydroxylation ability and formed their respective hydroxides. Their formation mechanisms are discussed and summarized. This study is useful for N 2 H 4 to be employed for material synthesis.