Sol-Gel Synthesized Semiconductor Oxides in Photocatalytic Degradation of Phenol

Figure 4

Effectiveness of investigated semiconductor oxides in photocatalytic phenol degradation. Experimental conditions: initial phenol concentration = 0.536 mM; catalyst concentration = 0.1 g·L⁻¹; pH = 5.9; 𝑇=303 K. (a) Variations of 𝐶₂₇₀ values during phenol photodegradation: 1—TiO₂ P25; 2—TiO₂; 3—ZnO; 4—WO₃; 5—photolysis; 6—α-Fe₂O₃; (b) 𝐶₂₇₀ and 𝐶_TOC values of phenol solution after reaction.

(a)

(b)