標題: Electrodeposited Fe2TiO5 nanostructures for photoelectrochemical oxidation of water
作者: Lin, Yan-Gu
Hsu, Yu-Kuei
Lin, Yu-Chang
Chen, Ying-Chu
材料科學與工程學系
Department of Materials Science and Engineering
關鍵字: Iron oxide;Titanium doping;Nanostructured film;Photoelectrochemical
公開日期: 20-九月-2016
摘要: Electrodeposition was used to fabricate nanostructured films of Ti-containing hematite for application to the photoelectrochemical (PEC) splitting of water. The morphology and microstructure of Ti-doped hematite were examined with a scanning electron microscope, X-ray diffraction, Raman spectra and X-ray photoelectron spectra. Optical absorption spectra indicated an enhanced light absorbance in Ti-doped hematite. This Ti doping increased the carrier concentration about ten-fold, confirmed with a Mott-Schottky analysis. The prepared Ti-doped hematite showed a photocurrent enhanced four-fold relative to pristine hematite. Synchrotron-based soft X-ray absorption spectra clearly revealed that a local Fe2TiO5 structure in hematite formed a heterojunction, which decreased the accumulation of photogenerated holes and improved the performance. (C) 2016 Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.electacta.2016.07.143
http://hdl.handle.net/11536/135890
ISSN: 0013-4686
DOI: 10.1016/j.electacta.2016.07.143
期刊: ELECTROCHIMICA ACTA
Volume: 213
起始頁: 898
結束頁: 903
顯示於類別:會議論文