New Approach of the Oxidant Peroxo Method (OPM) Route to Obtain Ti(OH)₄ Nanoparticles with High Photocatalytic Activity under Visible Radiation

Table 1

Band gap energy, specific surface area, and crystallite size of the materials.

Sample	Band gap (eV)	(m^2 g^−1)	Crystallite size (nm)
Ti(OH)4	2.15	15	—
TiO2-300°C	2.76	45	—
TiO2-400°C	2.93	23	19
TiO2-500°C	2.88	79	20