Photocatalytic Properties of Size-Controlled Titania Nanotube Arrays

Table 1

The dependence of rate constant on the inner diameter (I. D.) and the length of titania nanotube arrays.

Region	Voltage (V)	𝑘/I. D. (min·mm·V)^−1	𝑘/Length (min·mm·V)^−1
A	0–10	28	0.71
B	10–30	6.1	0.050
C	30–40	74	0.27
D	40–50	4.0	0.091