Activated Hydrotalcites Obtained by Coprecipitation as Photocatalysts for the Degradation of 2,4,6-Trichlorophenol

Table 3

Banned band energy of activated hydrotalcites determined from the Tauc plot.

Photocatalyst	Banned band (eV)
M1 500°C	3.45
M2 500°C	3.54
M3 500°C	3.47
M4 500°C	3.47
M5 500°C	3.51
M6 500°C	3.56
M7 500°C	3.48
Degussa TiO2	3.20