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首页> 外文期刊>Journal of nano research >Reusable Mn-Doped ZnS Magnetic Nanocomposite For Photodegradation of Textile Dyes
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Reusable Mn-Doped ZnS Magnetic Nanocomposite For Photodegradation of Textile Dyes

机译：可重复使用的Mn掺杂的ZnS磁性纳米复合材料，用于染料的光降解

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Magnetic nanoparticles of Mn-doped ZnS has been synthesized with different molar ratios of manganese and zinc by co-precipitation method. Structure of the prepared nanocomposite was investigated using FT-IR, XRD, TEM and VSM. The most excellent photodegradation efficiency of reactive blue 198 ( RB198) was observed with the molar ratio of Mn-doped ZnS/Fe3O4 1:1 in which molar percentage of Mn2+ was 9%. The experiments of dye degradation were carried out under visible light and UV radiation. Results showed that the photodegradation efficiency of RB198 was up to 100% at the concentration of 200 ppm for 10 min when the amount of catalyst was 0.2g/L. Additionally, the effect of various parameters including initial concentration, illumination time and pH to the photodegradation efficiency of dye was also carried out. More interestingly, the reusable experiments showed that the nanocomposite exhibited a high photodegradation capacity after three cycles and can be recycled conveniently from water with the assist of an external magnet because of its exceptional properties.
机译：通过共沉淀法合成了锰和锌摩尔比不同的锰掺杂ZnS磁性纳米粒子。使用FT-IR，XRD，TEM和VSM研究了制备的纳米复合材料的结构。 Mn掺杂的ZnS / Fe3O4的摩尔比为1：1（其中Mn2 +的摩尔百分比为9％）时，活性蓝198（RB198）的光降解效率最高。染料降解实验是在可见光和紫外线辐射下进行的。结果表明，当催化剂用量为0.2g / L时，在200ppm浓度下，RB198的光降解效率高达100％。另外，还进行了包括初始浓度，照射时间和pH在内的各种参数对染料的光降解效率的影响。更有趣的是，可重复使用的实验表明，纳米复合材料在三个循环后表现出高的光降解能力，并且由于其优异的性能，可以借助外部磁体方便地从水中回收利用。

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