摘要
二硫化钼(MoS_(2))纳米片的层内固有缺陷以及层间纳米限域通道的存在,有利于提高水处理纳滤/反渗透(NF/RO)膜的渗透选择性。本文首先介绍了MoS_(2)纳米片的“三明治”结构,其具有易功能化、高吸附容量和氧化还原去除能力、层间纳米限域通道的光滑性和稳定性及抗污染等特性;然后重点综述了MoS_(2)基纳米孔膜、层叠膜和混合基质膜的制备方法及膜性能的影响因素;最后总结了MoS_(2)纳米片基水处理NF/RO膜未来发展亟待解决的关键问题,主要包括研究大尺寸纳米片和均匀亚纳米孔的可控制备方法,开发超薄、高度有序的MoS_(2)分离层构建方法,探索层间纳米限域通道内分子和离子的传输行为和潜在的分离机理,开发增强与聚合物基质界面相容性的改性策略,对下一代高性能水处理NF/RO膜的研发具有启发意义。
The inherent defects in the molybdenum disulfide(MoS_(2))nanosheets and the nano-confined channels between the nanosheets are beneficial to enhance the perm-selectivity of nanofiltration/reverse osmosis(NF/RO)membranes.In this paper,the sandwich structure of the MoS_(2) nanosheets,and their merits of easy functionalization,high adsorption capacity and redox removal ability,good smoothness and stability of interlayer nano-confined channels,and nice antifouling properties are introduced firstly.After that,the latest research progress of MoS_(2) nanosheets in nanoporous membranes,laminated membranes and mixed matrix membranes are reviewed.Finally,the critical issues in the future development of the MoS_(2) nanosheets based NF/RO membranes are summarized,mainly including the preparation of large scale nanosheets and uniform sub-nanopores,the construction of ultra-thin and perfect MoS_(2) separation layer,the exploration of molecular and ion transport behaviors and potential separation mechanisms in the nano-confined channels,and the modification strategies to enhance their interfacial compatibility in polymer matrix,which are of great significance for the development of the next-generation high performance NF/RO membranes.
作者
赵东升
ZHAO Dongsheng(College of Civil Engineering and Architecture,Nanyang Normal University,Nanyang 473061,Henan,China)
出处
《化工进展》
EI
CAS
CSCD
北大核心
2021年第10期5590-5599,共10页
Chemical Industry and Engineering Progress
基金
河南省科技攻关计划(202102310260)
河南省高等学校重点科研项目(20B610005)。
关键词
膜
纳滤
反渗透
二硫化钼
membranes
nanofiltration
reverse osmosis
molybdenum disulfide
