Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6601277 | Electrochemistry Communications | 2015 | 17 Pages |
Abstract
This work shows that highly ordered and mechanically stable micrometer-long Ta2O5 nanotube arrays can be fabricated by galvanostatic anodization in a few seconds. Typically, ~ 7.7 μm long nanotubes can be grown at 1.2 A cmâ 2 in only 2 s. Such nanotubes can be converted to Ta3N5 nanotube arrays by nitridation. Photoelectrochemical (PEC) water splitting using AM 1.5G illumination yields for the Ta3N5 nanotube photoanode modified with cobalt phosphate (Co-Pi) remarkable photocurrents of 5.9 mA cm â2 at 1.23 VRHE and 12.9 mA cm â2 at 1.59 VRHE and after Ba-doping a value of 7.5 mA cm â2 at 1.23 VRHE is obtained.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Zixue Su, Sabina Grigorescu, Lei Wang, Kiyoung Lee, Patrik Schmuki,