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Organo-montmorillonite supported titania nanocomposite synthesized by using poly(methyl methacrylate) grafted cellulose as template and its application in photodegradation

机译：聚甲基丙烯酸甲酯接枝纤维素为模板合成有机蒙脱土负载的二氧化钛纳米复合材料及其在光降解中的应用

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摘要

We report a study on the synthesis of a nanocomposite that contains anatase titania (TiO2) particles, organo-montmorillonite (OMMT) and cellulose-g-poly(methyl methacrylate) (cellulose-g-PMMA), and the application of the nanocomposite as a photocatalyst in degradation of 2,4-dichlorophenol (2,4-DCP). The nanocomposite was characterized by Fourier-transform infrared spectra, X-ray diffraction, transmission electron microscopy and scanning electron microscopy. The photocatalytic activity of the nanocomposite was evaluated by the photoreaction of 2,4-DCP. We compared the photocatalytic activity of the nanocomposite in the presence or absence of OMMT, PMMA and TiO2. The photocatalytic activity of the nanocomposite was also compared with commercial TiO2 nanoparticles. The synthetic nanocomposite exhibits the highest photocatalytic activity. After the fourth time recycling, the nanocomposite still maintains more than 90 % of its photocatalytic activity.
机译：我们报告了有关包含锐钛矿型二氧化钛（TiO2）颗粒，有机蒙脱土（OMMT）和纤维素-g-聚（甲基丙烯酸甲酯）（纤维素-g-PMMA）的纳米复合材料的合成的研究，以及该纳米复合材料的应用降解2,4-二氯苯酚（2,4-DCP）的光催化剂。通过傅立叶变换红外光谱，X射线衍射，透射电子显微镜和扫描电子显微镜对纳米复合材料进行表征。通过2，4-DCP的光反应评价了纳米复合材料的光催化活性。我们比较了存在或不存在OMMT，PMMA和TiO2时纳米复合材料的光催化活性。纳米复合材料的光催化活性也与商用TiO2纳米颗粒进行了比较。合成的纳米复合材料表现出最高的光催化活性。在第四次回收之后，纳米复合材料仍保持其光催化活性的90％以上。

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