Novel fabrication of net-like and flake-like Fe doped TiO2 thin films |
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| Authors: | Fujian RenKai He Yunhan Ling Jiayou Feng |
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| Institution: | Department of Materials Science and Engineering, Advanced Materials Laboratory, Tsinghua University, Beijing 100084, PR China |
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| Abstract: | New morphologies of net-like and flake-like TiO2 thin films with different concentrations of Fe dopant were successfully fabricated by micro-arc oxidation (MAO) process of Ti plates and a subsequent chemical treatment of the as-prepared MAO-TiO2 thin films. It was found that Fe ions can be easily introduced into the MAO-TiO2 samples with the increase concentration of K4(FeCN)6·3H2O precursor, and the amount of Fe determined the morphologies of TiO2 thin films after chemical treatment; net-like morphology was observed with low Fe dopant, while it transformed to a flake-like one when Fe exceeds 1.7 at.%. UV-vis spectroscopy test showed that the absorption edge of the Fe ions doped TiO2 thin films with new morphologies has an obvious red shift. |
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| Keywords: | Surface Nanocrystalline materials Thin films Fe dopant TiO2 |
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