Source: Tsinghua University News Network

Tsinghua news network, April 8 - on April 7, Professor Zhu Hongwei's team from the school of materials of Tsinghua University published a long review paper entitled "Cation–π Interactions in Graphene‐Containing Systems for Water Treatment and Beyond" online on advanced materials, the key role of cation π interaction in graphene system in water treatment (membrane separation, adsorption), new material synthesis, nano power generation, energy storage, solution / composite dispersion and other applications is systematically summarized. The influence mechanism of cation π interaction is analyzed, and the progress of related theoretical work at this stage is reviewed There are some problems in the study of cation - π interaction in graphene system, and the potential research direction in the future is prospected.

Cation - π interaction is a kind of noncovalent interaction, which is common in nature, especially in living bodies, and essential in many life reaction processes. In recent years, the importance of cation - π interaction in biology, chemistry and physics has been widely concerned. Graphene is a kind of two-dimensional carbon nano material with honeycomb lattice formed by SP2 hybrid orbital, which can be regarded as a unique aromatic macromolecule. The interaction between cations and delocalized π electrons in graphene will lead to the enrichment of cations on the surface of graphene, the redistribution of ions in solution and electrons in graphene structure, and then affect the intrinsic properties of graphene materials and the performance of graphene based devices. It is very important to understand the cation - π interaction in graphene system for the control of graphene properties and the optimal design of devices.

Cation π interaction in graphene system and its application

In recent years, Professor Zhu Hongwei's team has carried out a lot of research work in controllable preparation, structural design, energy (solar cell, photoelectric detection, photocatalysis), environment (water treatment, air purification, soil treatment), flexible sensors and other fields of new two-dimensional materials such as graphene, and made a series of important progress. In this paper, the cation - π interaction in graphene system is taken as the starting point, and the relevant research reports are reviewed and discussed, and the development trend and prospect are prospected.

The corresponding author of this paper is Professor Zhu Hongwei, and the first author is Zhao Guoke, a 2016 level doctoral student in the school of materials, Tsinghua University. This research is supported by the basic science center and general program of NSFC.

Paper link: https://onlinelibrary.wiley.com/doi/full/10.1002/adma.201905756

Contributed by: Materials College

Editor: Li Huashan

Audit: Cheng Xi

Source: https://news.tsinghua.edu.cn/info/1007/76609.htm

Disclaimer: This article is translated by cpolymer. The translation is for reference only. All contents are subject to the original text.