摘要
以芳砜纶(PSA)为原料,通过简单的溶胶-凝胶法,经冷冻干燥制备三维多孔的PSA气凝胶材料,研究了其对水相中罗丹明B染料的吸附性能,并通过吸附动力学和等温吸附模型拟合探究了吸附机理.结果表明:PSA气凝胶对罗丹明B具有良好的吸附性能,在染料初始浓度为1 000mg/L时,吸附720min可达到最佳的吸附量为113.96mg/g.其吸附过程符合准二级动力学模型和Langmuir等温线模型,表明PSA气凝胶对罗丹明B的吸附过程属于单分子层化学吸附.为PSA气凝胶的发展和应用提供一定的理论基础和科学依据.
A three-dimensional porous PSA aerogel material was prepared by freeze-drying using polysulfonamide(PSA)as raw material.The adsorption properties of Rhodamine B dye in water phase were studied,and the adsorption mechanism was explored by adsorption kinetics and isotherm model fitting.The results showed that PSA aerogels had good adsorption properties for Rhodamine B.When the initial concentration of dye was 1 000 mg/L,the best adsorption capacity was 113.96 mg/g when adsorbed 720 min.The adsorption process accords with the pseudo second-order model and the Langmuir isotherm model,which indicates that the adsorption process of Rhodamine B aerogel belongs to chemical sorption and monolayer adsorption.This study provides a theoretical basis and scientific basis for the development and application of PSA aerogels.
作者
张素风
张楠
华晨
钱立伟
杨苗秀
ZHANG Su-feng;ZHANG Nan;HUA Chen;QIAN Li-wei;Yang Miao-xiu(Shaanxi Province Key Laboratory of Papermaking Technology and Specialty Paper,Key Laboratory of Auxiliary Chemistry&Technology for Chemical Industry,Ministry of Education,National Demonstration Center for Experimental Light Chemistry Engineering Education,Shaanxi University of Science&Technology,Xi′an 710021,China)
出处
《陕西科技大学学报》
CAS
2019年第2期6-10,23,共6页
Journal of Shaanxi University of Science & Technology
基金
陕西省科技厅重大科技专项项目(2015KTCQ01-44)
陕西省教育厅重点实验室科研计划项目(17JS016)
陕西省造纸技术及特种纸品开发重点实验室科研计划项目(12JS024)
