Novel fabrication of net-like and flake-like Fe doped TiO2 thin films

Novel fabrication of net-like and flake-like Fe doped TiO2 thin films
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网状和片状 Fe 掺杂 TiO2 薄膜的新颖制备

DOI:
10.1016/j.apsusc.2011.06.083
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发表时间:
2011-09
影响因子:
6.7
通讯作者:
Feng, Jiayou
Feng, Jiayou
中科院分区:
材料科学1区
文献类型:
--
作者:
Ren, Fujian;He, Kai;Ling, Yunhan;Feng, Jiayou

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采用微弧氧化法对钛板进行微弧氧化处理,并对制备的微弧氧化- tio2薄膜进行化学处理,成功制备了不同Fe掺杂浓度的网状和片状tio2薄膜。研究发现,随着K4(FeCN)6·3H2O前驱体浓度的增加,Fe离子容易引入mao - tio2样品中,Fe的含量决定了化学处理后tio2薄膜的形貌;当铁含量较低时,表面形貌呈网状,当铁含量超过1.7%时,表面形貌呈片状。紫外可见光谱测试表明,新形貌的Fe离子掺杂tio2薄膜的吸收边有明显的红移。
New morphologies of net-like and flake-like TiO2thin 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-TiO2thin films. It was found that Fe ions can be easily introduced into the MAO-TiO2samples with the increase concentration of K4(FeCN)6·3H2O precursor, and the amount of Fe determined the morphologies of TiO2thin films after chemical treatment; net-like morphology was observed with low Fe dopant, while it transformed to a flake-like one when Fe exceeds 1.7at.%. UV–vis spectroscopy test showed that the absorption edge of the Fe ions doped TiO2thin films with new morphologies has an obvious red shift.
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