Effect of Temperature Sintering on Grain Growth and Optical Properties of TiO₂ Nanoparticles

Table 1

Anatase and rutile phase compositions and crystallite size of TiO₂ nanoparticles sintered at 500–900°C for 1 hr.

Calcined temperature (°C)	Crystal phase (%)		Crystallite size (nm)
	Anatase	Rutile	Anatase	Rutile
500	100	–	23	–
600	78	22	31	38
700	14	86	34	42
800	–	100	–	49
900	–	100	–	62