Electrodeposited amorphous iron(III) oxides as anodes for photoelectrolysis of water

Pei Shan Li, Hsisheng Teng

研究成果: Article同行評審

18 引文 斯高帕斯(Scopus)

摘要

Deposition of amorphous iron(III)-oxide films on a conducting glass substrate was achieved via a cathodic bias in a 0.1 M hydrated ammonium iron(II) sulfate ((NH4)2Fe (SO4)2·6H2O) solution at -1.6 V versus Ag/AgCl. Analysis by X-ray absorption near edge structure confirmed the iron(III) feature of the amorphous films. The deposited films exhibited n-type semiconducting characteristics by showing photoresponses under an anodic bias. The Mott-Schottky method and cyclic voltammetry were employed to characterize the semiconducting properties of the deposited films, which included the band gap (2.2 eV), the potentials of the conduction and valence band edges and flat band (-0.6, +1.6 and -0.58 V versus Ag/AgCl at pH 7, respectively), and the donor density (1 × 1022/cm3). The deposited iron(III)-oxide films were suitable to serve as an anode for water splitting under illumination.

原文English
頁(從 - 到)267-273
頁數7
期刊Journal of the Chinese Institute of Chemical Engineers
38
發行號3-4
DOIs
出版狀態Published - 2007

All Science Journal Classification (ASJC) codes

  • 化學 (全部)
  • 化學工程 (全部)

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