Photocatalytic Degradation of 2,4-Dichlorophenol Using Nanosized Na₂Ti₆O₁₃/TiO₂ Heterostructure Particles

Figure 2

SEM image of Na₂Ti₆O₁₃/TiO₂ composite particles. (a) 1.5-Na₂Ti₆O₁₃/TiO₂ precursor; (b) 1.5-Na₂Ti₆O₁₃/TiO₂ calcined at 500°C; (c) 1.5-Na₂Ti₆O₁₃/TiO₂ calcined at 600°C; (d) 1.5-Na₂Ti₆O₁₃/TiO₂ calcined at 700°C; (e) 1.5-Na₂Ti₆O₁₃/TiO₂ calcined at 800°C.

(a)

(b)

(c)

(d)

(e)