TY - JOUR
T1 - Electrodeposited amorphous iron(III) oxides as anodes for photoelectrolysis of water
AU - Li, Pei Shan
AU - Teng, Hsisheng
N1 - Funding Information:
This research was supported by the National Science Council of Taiwan (NSC 95-2120-M-006-001 and 95-2221-E-006-408-MY3). We also thank Dr. Jyh-Fu Lee and Mr. Yu-Li Tai of the Taiwan Synchrotron Radiation Research Center for their help on the analysis of the XANES spectra.
PY - 2007
Y1 - 2007
N2 - 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.
AB - 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.
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U2 - 10.1016/j.jcice.2007.01.006
DO - 10.1016/j.jcice.2007.01.006
M3 - Article
AN - SCOPUS:39149143685
SN - 0368-1653
VL - 38
SP - 267
EP - 273
JO - Journal of the Chinese Institute of Chemical Engineers
JF - Journal of the Chinese Institute of Chemical Engineers
IS - 3-4
ER -