果皮衍生炭基气凝胶的制备及其对碘离子的吸附性能研究

Preparation of Peel-Derived Carbon-Based Aerogel and Its Adsorption Properties for Iodide Ions

以西瓜皮和柚子皮为前驱体,通过水热法和冷冻干燥制备果皮衍生炭基气凝胶,并将其应用于含碘离子模拟废水中。利用红外光谱、拉曼光谱和扫描电子显微镜等仪器对果皮衍生炭基气凝胶进行结构性能表征。研究不同酸碱值、吸附穿透时长和循环利用对碘离子的去除率影响。实验结果表明,高温煅烧后的果皮衍生气凝胶具有更大的表面积,能有效去除碘离子并有可循环利用的性能。

Using watermelon peel and grapefruit peel as precursors,the peel-derived carbon aerogel was prepared by hydrothermal method and freeze-drying,and applied to simulated wastewater containing iodide.The structures and properties of peel-derived carbon-based aerogel were characterized by infrared spectroscopy,Raman spectroscopy and scanning electron microscopy.Moreover,the effects of different pH values,adsorption penetration time and recycling on the removal rate of iodized ions were studied.The experimental results show that the peel-derived aerogel after calcination at high temperature has a larger surface area,can effectively remove iodide ions and has recyclable properties.