Hongwei ZhuProfessor of Tsinghua University
Hongwei Zhu, professor and doctoral supervisor of Tsinghua University. He was admitted to Tsinghua University in 1993 and received his bachelor's and doctor's degrees in 1998 and 2003. Mainly engaged in multi-dimensional and multi-scale controllable synthesis of nano materials represented by two-dimensional materials and basic research on its application in the field of energy / environment / sensor. In recent years, he focused on promoting the transformation of graphene preparation, sensors, water treatment membrane materials and other technological achievements, and undertake scientific research projects such as national key basic research and development plan, National Natural Science Foundation of China, major projects of Beijing Science and technology plan, etc. He has published more than 300 papers, invited to write more than 10 chapters, published 5 monographs such as , and , and has been granted more than 20 invention patents. He has won the first prize of China International graphene innovation and entrepreneurship competition, the second prize of National Natural Science, and the first / second prize of natural science of the Ministry of education.
Title：Cation-π Interaction in Graphene Systems and its Applications
Symposium
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Abstract
Cation-π interaction is a non-covalent interaction, which plays an increasingly important role in chemistry, biology and materials science. The electrokinetic effects based on cation-π interaction, such as relative motion induced electron drag, ion migration, Coulomb drag and pseudocapacitance, are typical applications of graphene materials in the fields of environment, energy and even biology [1]. For graphene, its controllable two-dimensional surface/interface cation-π interaction and its coupling effect have a significant impact on the power generation performance of the membrane. It is a key scientific problem to study the electrokinetic effect of graphene-ionic solution during mutual motion and reveal the electricity generation behavior under multi-mode motions such as surface diffusion, ion penetration, liquid surface displacement and continuous flow. Based on the full understanding of the influence of cation-π interaction in graphene systems, combined with the application potential of cation-π interaction in environment, energy and other aspects, this talk proposes a new idea of using cation-π interaction at the solid-liquid surface/interface, coupling surface/interface charge separation and collection, and developing a liquid flow driven membrane structure based on combined surface diffusion and interlayer permeation.
References
[1] G. K. Zhao, H. W. Zhu. Adv. Mater. 2020, 32, 1905756.
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