蒙脱石微囊的制备及其吸附性能研究
发布时间：2019-05-11 19:08
【摘要】：以有机改性蒙脱石为囊膜壁壳,采用皮克林乳液法制备蒙脱石微囊。利用光学显微镜、扫描电镜和红外光谱对所制蒙脱石微囊的形貌和结构进行了表征。通过蒙脱石微囊对亚甲基蓝和罗丹明B的吸附行为,探讨了其吸附性能。采用单因素法考察了微囊浓度、溶液p H值对染料分子吸附性能的影响。探讨了微囊对亚甲基蓝和罗丹明B混合染料的选择性吸附。结果表明:所制蒙脱石微囊经正硅酸乙酯交联后形貌保持较完整。微囊的红外特征吸收峰与蒙脱石特征吸收峰一致。不同微囊浓度和p H值条件下,蒙脱石微囊吸附亚甲基蓝和罗丹明B的过程符合一级动力学方程。微囊对亚甲基蓝和罗丹明B混合染料的吸附具有选择性,对亚甲基蓝的吸附速率高于罗丹明B。
[Abstract]:Montmorillonite microcapsules were prepared by Pickering emulsion method with organically modified montmorillonite as capsule wall shell. The morphology and structure of montmorillonite microcapsules were characterized by optical microscope, scanning electron microscope and infrared spectroscopy. The adsorption properties of methylene blue and rhodamine B on montmorillonite microcapsules were discussed. The effects of microcapsule concentration and pH value on the adsorption properties of dye molecules were investigated by single factor method. The selective adsorption of methylene blue and rhodamine B mixed dye by microcapsules was studied. The results showed that the morphology of the montmorillonite microcapsules was intact after cross-linking with tetraethyl orthosilicate. The infrared characteristic absorption peaks of microcapsules are consistent with those of montmorillonite. The adsorption of methylene blue and rhodamine B by montmorillonite microcapsules was in accordance with the first-order kinetic equation under different microcapsule concentrations and pH values. The adsorption rate of methylene blue and rhodamine B was higher than that of rhodamine B. the adsorption rate of methylene blue was higher than that of rhodamine B.
【作者单位】： 西南科技大学非金属矿研究所固体废物处理与资源化教育部重点实验室;西南科技大学低成本废水处理技术四川省国际科技合作基地;四川省非金属矿粉体改性与高质化利用技术工程实验室;
【基金】：国家自然科学基金(41672039) 西南科技大学研究生创新基金(17ycx044)
【分类号】：TQ424;X703
，
本文编号：2474773
[Abstract]:Montmorillonite microcapsules were prepared by Pickering emulsion method with organically modified montmorillonite as capsule wall shell. The morphology and structure of montmorillonite microcapsules were characterized by optical microscope, scanning electron microscope and infrared spectroscopy. The adsorption properties of methylene blue and rhodamine B on montmorillonite microcapsules were discussed. The effects of microcapsule concentration and pH value on the adsorption properties of dye molecules were investigated by single factor method. The selective adsorption of methylene blue and rhodamine B mixed dye by microcapsules was studied. The results showed that the morphology of the montmorillonite microcapsules was intact after cross-linking with tetraethyl orthosilicate. The infrared characteristic absorption peaks of microcapsules are consistent with those of montmorillonite. The adsorption of methylene blue and rhodamine B by montmorillonite microcapsules was in accordance with the first-order kinetic equation under different microcapsule concentrations and pH values. The adsorption rate of methylene blue and rhodamine B was higher than that of rhodamine B. the adsorption rate of methylene blue was higher than that of rhodamine B.
【作者单位】： 西南科技大学非金属矿研究所固体废物处理与资源化教育部重点实验室;西南科技大学低成本废水处理技术四川省国际科技合作基地;四川省非金属矿粉体改性与高质化利用技术工程实验室;
【基金】：国家自然科学基金(41672039) 西南科技大学研究生创新基金(17ycx044)
【分类号】：TQ424;X703
，
本文编号：2474773
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