固载化瓜环的制备及其对磺胺间甲氧嘧啶的吸附性能研究  

Preparation of cucurbit [6] uril anchored silica gel and its adsorption characteristics of sulfamonomethoxine

作　　者：靳涛[1,2] 陈德强[1] 刘云[2] 董元华[2] 乔洪涛[2] 陈晓流[2] 

机构地区：[1]河海大学浅水湖泊综合治理与资源开发教育部重点实验室,南京210098 [2]中国科学院土壤环境与污染修复重点实验室(南京土壤研究所),南京210008

出　　处：《环境科学学报》2013年第4期991-996,共6页Acta Scientiae Circumstantiae

基　　金：国家自然科学基金项目(No.20907058)~~

摘　　要：在微波无极灯下将烯氧基瓜环固载到巯基硅胶(MSG)上,制得固载化瓜环(ACB[6]-SG).通过红外光谱表征固载产物,并研究固载化瓜环对磺胺间甲氧嘧啶(SMM)的吸附性能.结果表明,SMM在固载化瓜环上的吸附基本在2min内即可达到平衡;Henry方程和Freundlich方程均能较好地拟合SMM在固载化瓜环和巯基硅胶上的等温吸附曲线,但是SMM在固载化瓜环上的吸附主要是在瓜环中的分配,而SMM在巯基硅胶上的吸附则主要是多分子层的表面吸附作用;SMM在固载化瓜环上的平衡吸附量远大于在巯基硅胶上的平衡吸附量;SMM在两者上的吸附过程是一个放热过程,温度越低吸附效果越好.Cucurbit[6]uril anchored silica gel （ACB[6]-SG） was produced by anchoring perallyloxy-cucurbit[6]uril onto 3-mercaptopropyl-functionalized silica gel （MSG） under a microwave electrodeless lamp and was characterized by infrared spectrum analysis. The adsorption behaviors of sulfamonomethoxine （SMM） on ACB[6]-SG and MSG were studied. The results showed that the adsorption of SMM on ACB[6]-SG reached equilibrium in 2 min. The adsorption of SMM on ACB[6]-SG and MSG could be well described by both the Henry model and the Freundlich model. However, the adsorption of SMM on ACB[6]-SG was mainly partition processes of SMM in the cucurbit[6]uril, whereas the adsorption of SMM on MSG occurred mainly on the multilayer molecular surface of ACB[6]-SG. Furthermore, the adsorption amount of SMM on ACB[6]-SG at equilibrium was much higher than that on MSG. The adsorption of SMM on both ACB[6]-SG and MSG was an exothermic process, in which the lower the temperature was, the higher the adsorption efficiency.

关 键 词：固载化瓜环 巯基硅胶 磺胺间甲氧嘧啶 吸附 

分 类 号：X131[环境科学与工程—环境科学]