Characterization and Growth Mechanism of Nickel Nanowires Resulting from Reduction of Nickel Formate in Polyol Medium

Figure 4

SEM images of nickel nanowires synthesized by reduction of nickel formate with hydrazine hydrate at different temperatures (a, b), reaction times (c, d), and nickel concentrations (e, f).

(a) = 130°C, Ni : EG = 1 : 100, and  min

(b) = 140°C, Ni : EG = 1 : 100, and  min

(c) τ = 1 min, 130°C, and Ni : EG = 1 : 100

(d) τ = 1 h, 130°C, and Ni : EG = 1 : 100

(e) Ni : EG = 1 : 20, 130°C, and  min

(f) Ni : EG = 1 : 400, 130°C, and  min