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首页> 外文期刊>Applied Surface Science >Preparation And Characterization Of Bifunctional, Fe_3O_4/Zno Nanocomposites And Their Use As Photocatalysts
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Preparation And Characterization Of Bifunctional, Fe_3O_4/Zno Nanocomposites And Their Use As Photocatalysts

机译：双功能Fe_3O_4 / Zno纳米复合材料的制备，表征及其作为光催化剂的用途

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摘要

Bifunctional magnetic-optical Fe_3O_4/ZnO nanocomposites with different molar ratio were successfully synthesized by a facile two-step strategy. Compared with the other methods, it was found to be mild, inexpensive, green, convenient and efficient. Fe_3O_4 nanocrystal was used as seed for the deposit and growth of ZnO nanoparticle. A series of the characterizations manifested that the combination of Fe_3O_4 with ZnO nanoparticles was successful. Photocatalytic activity studies confirmed that as-prepared nanocomposites had excellent photodegradating behavior to Methyl Orange (MO) compared to the pure ZnO nanoparticles. The results showed that the degradation percentage of MO was about 93.6% for 1 h when the amount of catalyst was 0.51 glr1 and initial concentration of MO was 6 x 10~(-5) mol L~(-1) in the pH 7 solution. Moreover, the kinetics of photocatalytic degradation reaction could be expressed by the first-order reaction kinetic model. Furthermore, the Fe_3O_4/ZnO nanocomposites could be also served as convenient recyclable photocatalysts because of their magnetic properties.
机译：通过简便的两步法成功合成了不同摩尔比的双功能磁性Fe_3O_4 / ZnO纳米复合材料。与其他方法相比，该方法温和，便宜，绿色，方便，高效。 Fe_3O_4纳米晶体被用作ZnO纳米颗粒的沉积和生长的种子。一系列表征表明，Fe_3O_4与ZnO纳米粒子的结合是成功的。光催化活性研究证实，与纯ZnO纳米颗粒相比，制备的纳米复合材料对甲基橙（MO）具有优异的光降解性能。结果表明，在pH 7溶液中，催化剂用量为0.51 glr1，初始浓度为6 x 10〜（-5）mol L〜（-1）时，1 h的MO降解率为93.6％。 。此外，光催化降解反应的动力学可以通过一级反应动力学模型来表达。此外，Fe_3O_4 / ZnO纳米复合材料由于其磁性，也可以用作方便的可回收光催化剂。

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  • 来源
    《Applied Surface Science》 |2011年第23期|p.9724-9732|共9页
  • 作者

    Juan Xia; Anqi Wang; Xiang Liu; Zhongxing Su;

  • 作者单位

    State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China;

    State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China;

    State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China;

    State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China;

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  • 正文语种 eng
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  • 关键词

    Fe_3O_4/ZnO nanocomposites; Photoluminescence properties; Magnetic properties; Recycle photocatalysts;

    机译：Fe_3O_4 / ZnO纳米复合材料;光致发光性能;磁性;循环利用光催化剂;

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