title: Enhanced water splitting by Fe2O3-TiO2-FTO photoanode with modified energy band structure.
abstract: The effect of TiO2 layer applied to the conventional Fe2O3/FTO photoanode to improve the photoelectrochemical performance was assessed from the viewpoint of the microstructure and energy band structure. Regardless of the location of the TiO2 layer in the photoanodes, that is, Fe2O3/TiO2/FTO or TiO2/Fe2O3/FTO, high performance was obtained when α-Fe2O3 and H-TiNT/anatase-TiO2 phases existed in the constituent Fe2O3 and TiO2 layers after optimized heat treatments. The presence of the Fe2O3 nanoparticles with high uniformity in the each layer of the Fe2O3/TiO2/FTO photoanode achieved by a simple dipping process seemed to positively affect the performance improvement by modifying the energy band structure to a more favorable one for efficient electrons transfer. Our current study suggests that the application of the TiO2 interlayer, together with α -Fe2O3 nanoparticles present in the each constituent layers, could significantly contribute to the performance improvement of the conventional Fe2O3 photoanode.
authors: Institute/Faculty of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 143-747, Republic of Korea.
authors: Eul
authors: E
authors: Noh
authors: Institute/Faculty of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 143-747, Republic of Korea.
authors: Kyung-Jong
authors: KJ
authors: Noh
authors: Institute/Faculty of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 143-747, Republic of Korea.
authors: Kang-Seop
authors: KS
authors: Yun
authors: Institute/Faculty of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 143-747, Republic of Korea.
authors: Bo-Ra
authors: BR
authors: Kim
authors: Institute/Faculty of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 143-747, Republic of Korea.
authors: Hee-June
authors: HJ
authors: Jeong
authors: Institute/Faculty of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 143-747, Republic of Korea.
authors: Hyo-Jin
authors: HJ
authors: Oh
authors: Department of Environmental Engineering, Sunchon National University, Suncheon, Jeonnam 540-742, Republic of Korea.
authors: Sang-Chul
authors: SC
authors: Jung
authors: Department of Metallurgical & Materials Engineering, Inha Technical College, Incheon 402-752, Republic of Korea.
authors: Woo-Seung
authors: WS
authors: Kang
authors: Institute/Faculty of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 143-747, Republic of Korea.
authors: Sun-Jae
authors: SJ
authors: Kim
mesh_terms: D004566:Electrodes; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005290:Ferric Compounds / Q000737:chemistry* / Q000528:radiation effects; D006859:Hydrogen / Q000737:chemistry* / Q000302:isolation & purification / Q000528:radiation effects; D008027:Light; D008422:Materials Testing; D010100:Oxygen / Q000737:chemistry* / Q000302:isolation & purification / Q000528:radiation effects; D012993:Solar Energy; D017971:Tin Compounds / Q000737:chemistry* / Q000528:radiation effects; D014025:Titanium / Q000737:chemistry* / Q000528:radiation effects; D014867:Water / Q000737:chemistry*
chemical_list: D005290:Ferric Compounds; D017971:Tin Compounds; D014867:Water; C009495:titanium dioxide; C000499:ferric oxide; D006859:Hydrogen; D014025:Titanium; C045358:stannic oxide; D010100:Oxygen