Effect of Doping of Fe into TiO2 layer in Fe2O3/TiO2/FTO System for High Performance of Water Splitting

ISSN 1121-7588

Aryan Azad¹, Eul Noh¹, Kang-Seop Yun¹, Hee-June Jeong¹, Sang-Chul Jung², Woo-Seung Kang³, Nguyen Thai Moc¹, Sun-Jae Kim¹
1 Institute/Faculty of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 143-747, Korea
2Department of Environmental Engineering, Sunchon National University, Suncheon, Jeonnam 540-742, Republic of Korea
3Department of Metallurgical & Materials Engineering, Inha Technical College, Incheon 402-752, Republic of Korea,

Abstract

Hydrogen has unique physical and chemical properties which present benefits and challenges to its successful widespread adoption as a fuel. The photoelectrochemical (PEC) water splitting process with semiconductor metal oxides can be a promising solution to the global energy problem. Although amongst metal oxides Fe₂O₃ by 2.2 eV bang gap energy is more applicable, for reducing the recombination of electron and hole, Fe was doped into TiO₂. In this study Fe₂O₃/Fe doped TiO₂ photocatalysts were compared with Fe-doped TiO₂ and TiO₂ structures by using layer by layer-self assemble (LBL-SA) method and dipping process on FTO glass. According to our results the Fe₂O₃ coated on Fe doped TiO₂ /FTO has had best results.

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