摘要
以抗坏血酸为还原剂、聚乙二醇为交联剂,采用还原自组装和交联诱导相结合的策略,制备聚乙二醇/石墨烯气凝胶(LPGA).该策略不仅能改善LPGA的亲水性,而且能提高其结构稳定性。结果显示,LPGA具有超亲水性(水接触角为0°)、超轻(密度约为6.5 mg/cm^(3))和良好的结构稳定性(承受约自身重量2500倍的重量)的特性。在298 K温度下,在初始质量浓度为50 mg/L的喹啉水溶液中进行吸附时,LPGA对喹啉的平衡吸附容量可达83.62 mg/g.
Polyethylene glycol/graphene aerogel(LPGA)was prepared through the combination of reductive self-assembly and cross-linking induction with L-ascorbic acid as reducing agent and polyethylene glycol as crosslinking agent.This strategy can not only improve the hydrophilicity of LPGA,but also improve its structural stability.The results show that the prepared LPGA possesses advantages of super-hydrophilicity(water contact angle is 0°),ultra-light weight(density is about 6.5 mg/cm^(3)),and outstanding structural stability(bearing about 2500 times of its own weight).When the LPGA was applied to quinoline adsorption in the solution with an initial concentration of 50 mg/L at 298 K,the equilibrium adsorption capacity of LPGA towards quinoline reached 83.62 mg/g.
作者
吕文刚
康伟伟
赵宏
秦蕾
刘旭光
杨永珍
LYU Wengang;KANG Weiwei;ZHAO Hong;QIN Lei;LIU Xuguang;YANG Yongzhen(College of Materials Science and Engineering,Ministry of Education,Taiyuan University of Technology,Taiyuan 030024,China;Key Laboratory of Interface Science and Engineering in Advanced Materials,Ministry of Education,Taiyuan University of Technology,Taiyuan 030024,China)
出处
《太原理工大学学报》
CAS
北大核心
2021年第5期693-701,共9页
Journal of Taiyuan University of Technology
基金
国家自然科学基金资助项目(U1610255)。
关键词
石墨烯气凝胶
超亲水
吸附
喹啉
graphene aerogel
super hydrophilic
adsorption
quinoline
