Fabrication of TiO₂ Nanotube by Electrochemical Anodization: Toward Photocatalytic Application

Table 2

Parameters obtained by fitting the impedance spectra of the anodized samples at different applied potentials.

	()	(μF/m^2)	()	()		()	()		()
30 V	7.74	19.9	127.20	86.18	0.44	4.38	0.55	0.97	9.35
40 V	23.08	23.76	25.63	95.42	0.45	1.31	0.11	0.70	21.76
50 V	10.13	47.89	7.63	56.64	0.29	1.02	0.23	0.60	5.67
60 V	14.99	23.52	2.76	76.49	0.56	4.31	0.92	0.68	19.65