@article{Shen2012, 
author = {Shaohua Shen and Coleman X. Kronawitter and Jiangang Jiang and Samuel S. Mao and Liejin Guo},
title = {Surface tuning for promoted charge transfer in hematite nanorod arrays as water-splitting photoanodes},
year = {2012},
journal = {Nano Research},
volume = {5},
number = {5},
pages = {327-336},
keywords = {hematite, nanorods, Surface tuning, photoanodes},
url = {https://www.sciopen.com/article/10.1007/s12274-012-0213-6},
doi = {10.1007/s12274-012-0213-6},
abstract = {Hematite (α-Fe2O3) nanorod films with their surface tuned by W6+ doping have been investigated as oxygen-evolving photoanodes in photoelectrochemical cells. X-ray diffraction, field emission scanning electron microscopy, UV-visible absorption spectroscopy, and photoelectrochemical (PEC) measurements have been performed on the undoped and W6+-doped α-Fe2O3 nanorod films. W6+ doping is found to primarily affect the photoluminescence properties of α-Fe2O3 nanorod films. Comparisons are drawn between undoped and W6+-doped α-Fe2O3 nanorod films, WO3 films, and α-Fe2O3-modified WO3 composite electrodes. A close correlation between dopant concentration, photoluminescence intensity, and anodic photocurrent was observed. It is suggested that W6+ surface doping promotes charge transfer in α-Fe2O3 nanorods, giving rise to the enhanced PEC performance. These results suggest surface tuning via ion doping should represent a viable strategy to further improve the efficiency of α-Fe2O3 photoanodes.}
}