Modified ZnO Nanorod Photoanode with Enhanced Photoelectrochemical Performance
Yu-Chang Lin1*, Yan-Gu Lin2, Liang-Ching Hsu2, Po-Yang Peng2, Yu-Hsueh Chang2, San-Yuan Chen1
1Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu, Taiwan
2Scientific Research Division, National Synchrotron Radiation Research Center, Hsinchu, Taiwan
* Presenter:Yu-Chang Lin,
In this work, the nanostructured photoelectrode are fabricated on Fluorine-doped Tin Oxide (FTO) substrate by hydrothermal method for the application of solar water splitting as the main target. The ZnO nanoarray photoelectrodes are well-characterized by UV-vis spectroscopy (UV-vis), Transmission X-ray Microscopy (TXM), X-ray diffraction (XRD), Soft/Hard X-ray absorption spectroscopy (Soft/Hard XAS), UV Photoelectron Spectroscopy (UPS) and photocatalytic tests. The XRD patterns showed highly c-axis preferred orientation with diffraction peak of (002), exhibiting very good crystallinity of ZnO nanorod. From the photocatalytic results, the ZnO photoanode with growth time 48 hrs. shows high photocurrent with 0.95 mA/cm2. The size of the ZnO nanorods range from 150 to 200 nm in diameter and around 9 ┬Ám in height, as determined directly from the SEM micrograph.

Keywords: Zinc Oxide, Nanorods, Photoelectrochemical Water Splitting