摘要
氧化石墨烯(GO)由于其特殊的分子结构而具备超强的弹性、化学稳定性和机械强度.作为新型膜材料,氧化石墨烯在膜分离方面表现出独特的分离性能.根据目前的研究结果,氧化石墨烯膜的分离机理主要是尺寸排阻的分子筛分机理,分离效率也受其他因素的影响.基于以上理论,氧化石墨烯膜在分离可调性方面表现出了更突出的优势,可通过真空过滤和分层组装等方式实现薄片间隙层尺寸调节.同时,氧化石墨烯可通过与高分子聚合物共混等方式来提高有机膜的通量和抗污染性能.总之,氧化石墨烯为膜科学的发展提供了机遇和挑战.
Due to its special structure,graphene oxide（GO）exhibits superior properties,such as flexibility,chemical stability and mechanical strength.The membranes prepared by GO sheets show an unique separation performance.According to recent research results,the basic separation mechanism of GO membranes is molecular sieving of size exclusion,and the separation efficiency is influenced by other factors.Based on the principle of molecular size sieving,GO membranes present more prominent advantages in size tunability which can be realized by changing the interlayer size via vacuum filtration or self-assembling.Meanwhile,GO can improve the permeability and antifouling performance of organic membranes by blending GO nanosheets with macromolecular polymers.In conclusion,GO provides challenges and opportunities for the development of membrane science.
出处
《膜科学与技术》
CAS
CSCD
北大核心
2015年第6期106-112,共7页
Membrane Science and Technology
基金
国家自然科学基金(51478099)
中央高校基本科研业务费专项资金(233201500003)
