Title
Tube length optimization of titania nanotube array for efficient photoelectrochemical water splitting
Author
Kazuki Inoue, Atsunori Matsuda & Go Kawamura
Year
2022
Journal
Scientific Reports
Abstract
Anodic TiO2 nanotube arrays (TNTAs) have attracted much attention due to their excellent photoelectrochemical (PEC) properties. In this work, the tube length of TNTAs was optimized for efficient PEC water splitting under two different conditions, in which very few or a massive amount of gas bubbles were generated on the electrodes. As a result, relatively longer TNTAs were found to be preferable for higher PEC performance when a larger number of bubbles were generated. This suggests that the mass transport in the electrolyte is assisted by the generated bubbles, so that the electrode surfaces are more easily exposed to the fresh electrolyte, leading to the higher PEC performance.
Full Article
Instrument
NRS-4500
Keywords
Titania nanotube array, photoelectrochemical