In
the application of a solar cell and photocatalytic system, anodized
titanium dioxide nanotube arrays (TNTs) have one-dimensional highly
ordered nanotube structure, so they have attracted much attention.
In order to form ordered TNTs, many factors, such as voltage, anodizing
time, solvent type, and so on, need to be controlled. However, these
factors have mainly focused on the effect of external conditions,
while the effect of internal factors such as the crystal structure
of the titanium substrate on the growth of nanotubes have been less
investigated. In this paper, the titanium substrate tissue structure
with a (002) preferred orientation was obtained by a rolling treatment.
On this basis, TNTs with highly ordered structure were constructed,
and the effect of the titanium substrate structure on the nanotube
growth morphology was investigated. The changes in morphology were
characterized by scanning electron microscopy, and the relationship
between the changes in the crystal structure and morphology of TNTs
was systematically analyzed by combining metallographic structure
and X-ray diffraction data. The changes in the electrochemical behavior
of the titanium substrates after rolling were examined through electrochemical
methods. The above results show that there are a large number of dislocations
and microscopic internal stresses in the grain structure of the titanium
substrate after rolling, which leads to improvement of the corrosion
resistance of the materials. The changes in the microstructure of
these materials make the nanotube arrays have highly ordered structure
and better photoelectrochemical properties, which provides an idea
for improving their applications in photoelectrochemistry.