A new technology for CO 2 capture, utilization, and storage has attracted a lot of attention.
ion liquids, composed of only cations and anions, are considered a new type of CO 2 adsorbent due to their ultralow Vapor Pressure and Environmentally Friendly Features.
The Institute of Process Engineering (IPE) of the Chinese Academy of Sciences has found that two-dimensional ionic liquids show a completely different melting behavior than when in bulk phase.
The study was published in a journal.
When supported by a metal surface, ionic liquids can form a two-dimensional monolayer. The bulk ionic liquids had a single melting point, but the two-dimensional ionic liquids had different melting processes.
Anions and cations are arranged in a way that creates a Z-bond network. Prof. He said that it's more likely for the multi-step melting behaviors.
Due to the exposed Z-bonds, the two-dimensional ionic liquids show excellent performance for CO 2 capture. The mole fraction of CO 2 was improved by at least one order of magnitude.
The higher CO 2 adsorption capability suggests that two-dimensional ionic liquids could serve as functional layers of the catalyst to enhance the mass transfer process of CO 2
A new method for the precise control and functional design of liquids is expected to be provided by this two-dimensional editing technique.
More information: Hongyan He, Two dimensional ionic liquids with anomalous stepwise melting process and ultrahigh CO2 adsorption capacity, Cell Reports Physical Science (2022). DOI: 10.1016/j.xcrp.2022.100979. www.cell.com/cell-reports-phys … 2666-3864(22)00265-X Journal information: Cell Reports Physical Science
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