摘要
通过原位聚合的方法合成了石墨烯@聚希夫碱水凝胶。该水凝胶具备了氧化石墨烯以及聚希夫碱单独存在不具有的特性,简单易得。它可以作为一种新型的橙黄G的吸附剂。接触时间,p H值和初始浓度分别为研究水凝胶吸附橙黄G三个实验参数。平衡时间是48h。水凝胶对橙黄G吸附的最佳p H值为6。Langmuir,Tempkin和Fruendlich等温线方程被用来模拟吸附过程,对橙黄G染料的吸附符合Langmuir方程。通过假一级、假二级方程分析的吸附动力学数据表明,假二级方程可以精确描述对橙黄G的吸附过程。水凝胶通过过滤器得到大小相同的颗粒。
In this paper,a hydrogel was synthesized by a very facile method. It can be used as a novel adsorbent of orange-G. Three effects of experimental parameters such as contact time,p H and initial concentration were studies for the removal of orange-G. The equilibration time was reached within 48 h. The effective p H for the adsorption of orange-G on this hydrogel is 6. Langmuir,Tempkin and Fruendlich isotherm equation were used to model the adsorption rule,and the adsorption of orange-G dye followed langmuir equation. Adsorption kinetic data was analyzed by pseudo-first-order,pseudo-second-order. Kinetic data showed that the adsorption of orange-G could be precisely described by pseudo-second-order. The hydrogel was used without pretreatment except getting the same size of it through filter.
出处
《西华师范大学学报（自然科学版）》
2016年第2期184-188,共5页
Journal of China West Normal University(Natural Sciences)
基金
四川省教育厅自然科学重点项目(12ZA175)
关键词
水凝胶
吸附
染料
平衡
hydrogel
adsorption
dye
equilibrium
