气凝胶
石墨烯
吸附
材料科学
化学工程
两亲性
纳米技术
有机化学
化学
复合材料
聚合物
共聚物
工程类
作者
Kaidi Ji,Yue Gao,Lufan Zhang,Shue Wang,Qinyan Yue,Xinguang Xu,Wenjia Kong,Baoyu Gao,Zhenshan Cai,Yuhui Chen
标识
DOI:10.1016/j.scitotenv.2020.142958
摘要
Three-dimensional graphene aerogel materials used for treatment of oily wastewater with sophisticated composition remains a challenge due to volume shrinkage, resulting in single-function and low adsorption capacity. In this work, renewable Enteromorpha was introduced into the graphene aerogel via facile hydrothermal-freeze casting treatment, forming the compression, ultralight and amphiphilic adsorbent for oil spill cleanup and water pollution remediation. Meanwhile, further freeze casting avoids aerogel collapse for capillary tension during drying and produce more hierarchical pores. As for oil spill clean up, the Enteromorpha modified graphene aerogel (EGA) exhibits excellent adsorption capacity towards oil and organic solvents than pristine graphene aerogel (GA). Even after several cycles by compression and heat treatment, it still has a stable adsorption capacity for oil and organic solvents. The EGA also showed high ability to absorb water-soluble pollutants, such as dyes through hydrogen bonding and electrostatic reactions between dye molecules and aerogel. The facile strategy to fabricate the Enteromorpha-based amphiphilic EGA broadens the applications in water treatment through the high-value utilization of Enteromorpha.
科研通智能强力驱动
Strongly Powered by AbleSci AI