Iron(III)-oxo Centers on TiO2 for Visible-Light Photocatalysis

被引：65
|
作者：
Libera, Joseph A. [2 ]
Elam, Jeffrey W. [2 ]
Sather, Norman F. [2 ]
Rajh, Tijana [1 ]
Dimitrijevic, Nada M. [1 ,3 ]
机构：
[1] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA
[2] Argonne Natl Lab, Div Energy Syst, Argonne, IL 60439 USA
[3] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA
来源：
CHEMISTRY OF MATERIALS | 2010年 / 22卷 / 02期
关键词：
ATOMIC LAYER DEPOSITION; ELECTRON-PARAMAGNETIC-RES; THIN-FILMS; SEMICONDUCTOR PHOTOCATALYSIS; EPR SPECTROSCOPY; IRON; WATER; IRRADIATION; ABSORPTION; RESONANCE;
D O I：
10.1021/cm902825c
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Isolated iron(III)-oxo clusters were synthesized onto TiO2 using atomic layer deposition. The FexOy/TiO2 nanocomposites have unique properties that enable not only absorption of visible light, but efficient photocatalysis as demonstrated by methylene blue degradation. The localization of photogenerated electrons in core TiO2 nanocrystallites upon visible light excitation demonstrates coupling of conduction band of mixed oxides. The redox properties of photogenerated charges in nanocomposites were studied using in situ electron paramagnetic resonance spectroscopy.
引用
收藏
页码：409 / 413
页数：5
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