Synthesis of Nanometer-Sized WO_𝟑 Particles by Facile Wet Process and Their Photocatalytic Properties

Figure 5

TEM images of WO₃ nanocrystalline particles prepared at various NH₃/W ratios: (a) 3.2. (b) 6.5, (c) 12.9, (d) 25.7, (e) 52.4 (mol/mol), and (f) commercial product, respectively.

(a)

(b)

(c)

(d)

(e)

(f)