Department of Sciences, Amrita School of Engineering, Coimbatore, Amrita Vishwa Vidyapeetham, Coimbatore, India.
Environ Sci Pollut Res Int. 2023 Jun;30(28):71454-71463. doi: 10.1007/s11356-022-22137-2. Epub 2022 Jul 23.
The copolymer beads prepared by suspension polymerisation were decorated with MnO nanoparticles and successfully implemented for the efficient removal of toxic organic contaminants from water. Copolymer-MnO nanocomposite was further analysed using XRD, SEM and optical microscope. The SEM images showed the surface characteristics of MnO nanoparticles on copolymer beads. The efficiency of the copolymer-MnO nanocomposite for the removal of model pollutant methylene blue and rhodamine B is then analysed by changing the concentration of pollutant. The results obtained exhibited 18.45 mg/g for methylene blue adsorption and 3.125 mg/g for rhodamine B. The adsorption equilibrium results were fitted to Langmuir adsorption isotherm for both methylene blue and rhodamine B adsorption. The desorption studies were performed for five consecutive cycles, and material was showing good regenerating capacity towards both organic pollutants. The obtained results show that copolymer-MnO nanocomposite is an efficient material for the removal of organic contaminants from wastewater.
采用悬浮聚合制备的共聚物珠体用 MnO 纳米粒子进行了修饰，并成功地用于从水中有效去除有毒有机污染物。进一步使用 XRD、SEM 和光学显微镜对共聚物-MnO 纳米复合材料进行了分析。SEM 图像显示了 MnO 纳米粒子在共聚物珠体上的表面特征。然后通过改变污染物浓度分析了共聚物-MnO 纳米复合材料对模型污染物亚甲基蓝和罗丹明 B 的去除效率。得到的结果显示，亚甲基蓝吸附量为 18.45mg/g，罗丹明 B 吸附量为 3.125mg/g。吸附平衡结果符合亚甲基蓝和罗丹明 B 吸附的 Langmuir 吸附等温线。进行了五次连续的解吸研究，该材料对两种有机污染物均表现出良好的再生能力。所得结果表明，共聚物-MnO 纳米复合材料是一种从废水中去除有机污染物的有效材料。
