1D TiO₂ Nanostructures Prepared from Seeds Presenting Tailored TiO₂ Crystalline Phases and Their Photocatalytic Activity for Escherichia coli in Water

Table 1

Crystallite size, D_anatase or D_rutile, and anatase proportion, A_p, of the SG-TiO₂ powders prepared at the indicated pH using HCl or HNO₃ acid solutions.

Catalyst	pH	Danatase (nm)	Drutile (nm)	Ap
HNO3	0.5	9.4 ± 0.2	26.8 ± 0.2	0.18
	0.8	7.4 ± 0.2	29.0 ± 0.2	0.56
	1	9.0 ± 0.2	—	1
HCl	0.5	—	29.7 ± 0.2	~0.03
	0.8	9.5 ± 0.2	25.9 ± 0.2	0.39
	1	9.8 ± 0.2	—	1