二茂铁改性壳聚糖气凝胶的制备及对甲基蓝染料的吸附降解性能  

Ferrocene-modified chitosan aerogel for adsorption and degradation of Methyl Blue

作　　者：安鹏云 赵善娟 张永民 AN Pengyun;ZHAO Shanjuan;ZHANG Yongmin(Shanghai Carbon Yuan New Material Co.,Ltd.,Shanghai 201508,China;School of Chemistry and Material Engineering,Jiangnan University,Wuxi 214122,China)

机构地区：[1]上海碳远新材料有限公司,上海201508 [2]江南大学化学与材料工程学院,江苏无锡214122

出　　处：《印染》2024年第5期6-11,共6页China Dyeing and Finishing

基　　金：国家自然科学基金(22072058,21503094)。

摘　　要：以壳聚糖、二茂铁、聚乙烯亚胺为原料,制备了二茂铁改性壳聚糖气凝胶(PFcCS气凝胶)。通过FT-IR和SEM对其进行表征,并研究了其对甲基蓝(Methyl Blue,BS)染料的吸附降解性能。结果表明:在50℃、pH=6、c(BS)=300 mg/L的条件下,气凝胶对甲基蓝的吸附量可达263.2 mg/g;吸附以单层吸附为主,符合伪二级动力学方程,最大吸附量为1010.1 mg/g;吸附剂5次脱附循环使用后对甲基蓝的去除率仍为初始去除率的90%。另外,在pH=4、吸附时间60 min的条件下,甲基蓝的降解率达到90%,表明在双氧水的存在下,PFcCS气凝胶能够高效降解有机污染物。Ferrocene-modified chitosan aerogel(PFcCS)is prepared from chitosan,ferrocene and polyvinyl⁃imide.It is characterized by FT-IR and SEM,and its adsorption properties for Methyl Blue dye are studied.The results show that under the conditions of 50℃,pH=6 and c(BS)=300 mg/L,the adsorption capacity of PFcCS to BS can reach 263.2 mg/g.The adsorption is mainly single-layer adsorption,conforming to the pseudo-sec⁃ond-order kinetic equation,and the maximum adsorption capacity is 1010.1 mg/g.After 5 adsorption-desorp⁃tion cycles,the removal rate of BS is still 90%of the initial removal rate.In addition,under the conditions of pH=4,adsorption time 60 min,the degradation rate of BS reaches 90%,indicating that in the presence of hydro⁃gen peroxide,PFcCS aerogel can effectively degrade organic pollutants.

关 键 词：气凝胶 壳聚糖 二茂铁 甲基蓝 吸附 芬顿效应 

分 类 号：TS199[轻工技术与工程—纺织化学与染整工程] X703[轻工技术与工程—纺织科学与工程]