Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1788894 | Current Applied Physics | 2010 | 5 Pages |
Abstract
We fabricated the photoelectrochemical (PEC) cells using n-type TiO2 and metal (Pt, Pd)-decorated carbon nanotubes (CNTs) as an anode and a cathode, respectively. Photovoltaic effects were clearly observed. Compared with conventional PEC cell with Pt cathode, a larger photo-voltage was found in the PEC cells with the metal-decorated CNT cathode due to p-type semiconducting properties of CNTs. Additionally, we connected two PEC cells in series to decompose water into oxygen and hydrogen. Indeed, the connected PEC cells yielded the photo-voltage of about 1.35 V, which is larger than 1.23 V required for water splitting. This result demonstrates the possibility of hydrogen generation using the connected PEC cells without an external bias.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Chang Ho Kim, Sung Sic Hwang, Jihun Kim, Kyung-Hwa Yoo,