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Photocatalytic degradation of rhodamine B and methylene blue by electrochemically prepared nano titanium dioxide/reduced graphene oxide/poly (methyl methacrylate) nanocomposite
Reaction Kinetics, Mechanisms and Catalysis ( IF 1.7 ) Pub Date : 2020-01-28 , DOI: 10.1007/s11144-020-01722-x
Masoomeh Torabi Momen , Farideh Piri , Ramin Karimian

Composite of electrochemically prepared nano titanium dioxide/reduced graphene oxide/poly (methyl methacrylate) has been successfully synthesized. The homogeneous titanium dioxide nanoparticles (TiO2 NPs) and reduced graphene oxide were prepared individually and composites of titanium dioxide nanoparticles/reduced graphene oxide (TiO2/RGO) in different ratios were then prepared under sonication. Nano titanium dioxide/reduced graphene oxide/poly(methyl methacrylate) (TiO2/RGO/PMMA) composite were prepared subsequently. The composites were characterized by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), scanning electron microscopy (SEM) and electron dispersive spectrometer (EDS) for elemental analysis. Due to the long and great research interest as well as importance of developing new and efficient techniques in dyes degradation, methylene blue (MB) and Rhodamine B (RhB) were selected as two candidate to examine photocatalytic performance of the composites under 15 W UV-C lamp irradiation. Recovery of the TiO2/RGO/PMMA composite also revealed slight decrease in photocatalytic performance after four cycles.



中文翻译:

电化学制备的纳米二氧化钛/还原氧化石墨烯/聚甲基丙烯酸甲酯纳米复合材料光催化降解若丹明B和亚甲基蓝

电化学制备的纳米二氧化钛/还原氧化石墨烯/聚(甲基丙烯酸甲酯)的复合物已成功合成。分别制备均匀的二氧化钛纳米粒子(TiO 2 NPs)和还原的氧化石墨烯,然后在超声处理下制备不同比例的二氧化钛纳米粒子/还原的氧化石墨烯(TiO 2 / RGO)的复合物。纳米二氧化钛/还原氧化石墨烯/聚甲基丙烯酸甲酯(TiO 2随后制备/ RGO / PMMA)复合材料。通过X射线衍射(XRD),傅立叶变换红外光谱(FTIR),透射电子显微镜(TEM),扫描电子显微镜(SEM)和电子分散光谱仪(EDS)对复合材料进行元素分析。由于长期的研究兴趣以及开发新的高效染料降解技术的重要性,因此选择了亚甲基蓝(MB)和若丹明B(RhB)作为两种候选物,以检测15 W UV-UV下复合材料的光催化性能。 C灯照射。TiO 2 / RGO / PMMA复合材料的回收率还显示在四个循环后光催化性能略有下降。

更新日期:2020-04-22
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