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首页> 外文期刊>Journal of Materials Research >Water bath synthesis and enhanced photocatalytic performances of urchin-like microanostructured α-FeOOH
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Water bath synthesis and enhanced photocatalytic performances of urchin-like microanostructured α-FeOOH

机译：水浴合成胆红素微/纳米结构α-FeO​​OH的光催化性能增强

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摘要

Microanostructured goethite (α-FeOOH) was synthesized by a low-temperature water bath method based on the reaction of urea and FeSO_4·7H_2O at 95 ℃. It has been shown that the as-prepared α-FeOOH consists of nearly spherical particles with about 0.5-1 μm in diameter. The microsized α-FeOOH particles are urchin-like in morphology and composed of nanosized leaf-like objects, with about 150-200 nm in length and about 30-50 nm in width, in radial arrangement, showing high specific surface area (～118 m~2/g). The formation of such urchin-like α-FeOOH could be described by a two-step process, or formation of spherical particles, and ethylene glycol-adsorption induced preferential growth of nanoleaves on the preformed spherical particles. Importantly, such microanostructured α-FeOOH has exhibited much higher photocatalytic activity to the organic pollutants, such as Rhodamine 6G, and better re-usable performances than the goethite nanorod powders, exhibiting the good application potential in the environmental treatment. This study could provide a useful material for environmental pollution treatment.
机译：基于尿素与FeSO_4·7H_2O在95℃下的反应，通过低温水浴法合成了微/纳米结构针铁矿（α-FeO​​OH）。已经表明，所制备的α-FeO​​OH由直径约为0.5-1μm的近球形颗粒组成。微米级α-FeO​​OH颗粒的形态为海胆状，由纳米尺寸的叶状物体组成，径向排列的长约150-200 nm，宽约30-50 nm，具有较高的比表面积（〜118） m〜2 / g）。可以通过两步过程或球形颗粒的形成来描述这种海胆状α-FeO​​OH的形成，并且乙二醇吸附可在预先形成的球形颗粒上诱导纳米叶的优先生长。重要的是，这种微/纳米结构的α-FeO​​OH对有机污染物（如罗丹明6G）表现出更高的光催化活性，并且比针铁矿纳米棒粉末具有更好的可重复使用性能，在环境处理中显示出良好的应用潜力。该研究可为环境污染的治理提供有用的材料。

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  • 来源
    《Journal of Materials Research》 |2015年第10期|1629-1638|共10页
  • 作者

    Shenghong Kang; Guozhong Wang; Ming Fang; Huiming Wang; Xianbiao Wang; Weiping Cai;

  • 作者单位

    Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China;

    Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China;

    Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China;

    Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China;

    Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China;

    Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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