Electrochemical Investigation of Doped Titanium Dioxide

Table 2

Anodic photocurrent onset potential for different preparations in the presence of oxygen (the undoped sample gave an onset potential of –0.8 V).

	Onset potential (V)
Dopant	0.2 atom%	1.0 atom%	5.0 atom%
Vanadium	−0.49	−0.47	−0.46
Chromium	−0.48	−0.48	−0.45
Manganese	−0.47	−0.45	−0.41
Iron	−0.56	−0.45	−0.49
Cobalt	−0.58	−0.44	−0.45
Nickel	−0.52	−0.49	−0.44
Copper	−0.67	−0.56	−0.54