• 文献标题:   Boosting Osmotic Energy Conversion of Graphene Oxide Membranes via Self-Exfoliation Behavior in Nano-Confinement Spaces
  • 文献类型:   Article
  • 作  者:   QIAN YJ, LIU D, YANG GL, WANG LF, LIU YC, CHEN C, WANG XA, LEI WW
  • 作者关键词:  
  • 出版物名称:   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
  • ISSN:   0002-7863 EI 1520-5126
  • 通讯作者地址:  
  • 被引频次:   15
  • DOI:   10.1021/jacs.2c04663 EA JUL 2022
  • 出版年:   2022

▎ 摘  要

Introducing alien intercalations to sub-nanometer scale nanochannels is one desirable strategy to optimize the ion transportation of two-dimensional nanomaterial membranes for improving osmotic energy harvest (OEH). Diverse intercalating agents have been previously utilized to realize this goal in OEH, but with modest performance, complex operations, and physicochemical uncertainty gain. Here, we employ the self-exfoliation behavior of oxidative fragments (OFs) from graphene oxide basal plane under an alkaline environment to encapsulate detached OFs in nanochannels for breaking a trade-off between permeability and selectivity, boosting power density from 1.8 to 4.9 W m(-2) with a cation selectivity of 0.9 and revealing a negligible decline in power density and trade-off during a long-term operation test (similar to 168 h). The strategy of membrane design, employing the intrinsically self-exfoliated OFs to decorate the nanochannels, provides an alternative and facile approach for ion separation, OEH, and other nano-fluidic applications.