Preparation and Characterization of (I_𝟐)_𝑛 Sensitized Nanoporous TiO_𝟐 with Enhanced Photocatalytic Activity under Visible-Light Irradiation

Table 1

Physicochemical properties of IT-T samples from N₂ sorption analysis and XRD results.^a

Sample	𝑆BET	Pore volume	Average pore size	Crystal size
	(m^2/g)	(cm^3/g)	(nm)	(nm)
IT-200	508.04	1.287	9.863
IT-300	287.10	0.241	3.634	4.1
IT-400	247.64	0.180	16.350	7.2
IT-500	175.02	0.152	20.071	9.8
IT-600	163.71	0.148	26.851	13.2

^a BET surface areas were calculated from the linear part of the BET plots. Total pore volumes were obtained from the volume of N₂ adsorbed at 𝑃/𝑃₀=0.995 Average pore diameters were estimated using the desorption branch of the isotherm and the Battett-joyner-Halenda (BJH) formula. Crystal size was determined by XRD using Scherrer equation.