所属单位：

化学与化工学院

发表刊物：

《Bulletin of Materials Science》

关键字：

中文关键字：瓜环，磁性，英文关键字：Cucurbituril; magnetic

摘要：

Magnetic cucurbituril (MQ[ n ]), a new functional material compound, was prepared via chemical co-precipitation method as a high-capacity adsorbent for humic acid (HA). The material was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR) and thermal gravimetric analysis (TGA), respectively, indicating that Q[ n ] has been grafted on the surface of Fe 3 O 4 . Its adsorption-desorption behaviour towards HA from aqueous solution have been investigated. MQ[ n ] demonstrated good adsorption capacity at pH 7 in adsorption experiments. Adsorption isotherm could be well interpreted by the Freundlich isotherm model. Adsorption kinetic followed pseudo-second-order kinetics, which indicated that the limit factor of adsorption HA was adsorption mechanism. The negative value of thermodynamic parameters showed that adsorption process was spontaneous and exothermic. Moreover, the capacity of MQ[ n ] was also above 80% after being used for four times, so it may have potential industrial applications.nn34nn

备注：

杨琴

合写作者：

姜瑛

第一作者：

李晓莉,杨琴

论文类型：

期刊论文

卷号：

卷：37

期号：

期：5

页面范围：

页：1167-1174

是否译文：

否

发表时间：

2014-08-01