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

Figure 7

Change in acetaldehyde concentration against irradiation time under visible light (𝐼=3.5 mWcm⁻²): (a) 3.2, (b) 12.9 NH₃/W ratio (mol/mol), and (c) commercial product.