Photoelectrochemical oxidation of water at transparent ferric oxide film electrodes

Effect of Cr doping on the photoelectrochemical performance of hematite nanorod photoanodes

“…All the Raman peaks for both the undoped and Cr-doped aFe 2 O 3 films could be ascribed to the a-Fe 2 O 3 crystalline phase. [37,38] The very weak peak at 657 cm À1 in Cr-doped a-Fe 2 O 3 films should be assigned to the disorder phase induced by Cr 3 + doping, but not the presence of Fe 3 O 4 or FeO phase, since the Fe 2p spectra do not change before and after Cr doping (see Figure S1). A similar disorder phase was also detected by Raman spectra in the Pt-doped aFe 2 O 3 films [30].…”

Hydrogen generation at irradiated oxide semiconductor–solution interfaces

“…Thus it is hardly surprising that this material continues to be intensively studied from this perspective. As with TiO 2 and WO 3 , Fe 2 O 3 (particularly the a-modification) has been examined in single crystal form, as thin films prepared by CVD [237,239,255,270], pyrolytic conversion of iron [240], and spray pyrolysis [248,[250][251][252][253], or as sintered pellets from powders [241][242][243][244][245][246]. A variety of dopants have been deployed to modify the host [242-245, 247, 250-253] and remarkably, p-type semiconductor behavior has been reported [242,244,245,251] in addition to the more commonly occurring n-type material.…”

Fe₂O₃ Thin Films Prepared by Spray Pyrolysis Technique and Study the Annealing on its Optical Properties

“…The hematiteFe 2 O 3 was selected as a prototype due to its technological use as a catalyst [6][7], and photocatalyst [8], drug delivery vehicles [9], solar filters [10], recording media [11], spin valves [12], electrochromic devices [13], lithium-ion batteries [14], photoelectrochemical system for hydrogen generation [15], However, the best photo response has been reported for hematite prepared by spray pyrolysis [16][17]. The electrochromic devices are made of amorphous oxides [18], while crystalline phase plays a major role in catalysts and sensors [19]; this is because the minor change in their chemical composition and crystalline structure could modify different properties of the metal oxides.…”