Preparation and Characterization of Pure Rutile TiO₂ Nanoparticles for Photocatalytic Study and Thin Films for Dye-Sensitized Solar Cells

Table 1

The XRD crystal domain, TEM particle size, BET surface area of r-TiO₂ samples, and their photocatalytic activities for photodecomposition of methylene blue in aqueous solution.

r-TiO2 sample	Domain size (nm)	Particle size in length × width (nm)	BET (m^2/g)	Reaction rate 𝑘𝑎 (min^−1)
Ht-220-1	9.92	26.3×10.8	161.72	7.56×10^−3
Ht-220-5	20.58	50.5×18.5	46.73	8.61×10^−3
Ht-220-10	25.73	60.9×31.7	35.45	9.29×10^−3
Ht-220-15	28.39	71.1×31.0	28.71	1.52×10^−2
Ht-220-20	29.41	62.8×31.9	28.44	1.10×10^−2
Ht-220-24	31.60	76.9×36.5	18.93	1.04×10^−2