Rational design of a novel two-dimensional porous metal-organic framework material for efficient benzene sensor

As a common volatile organic compound, benzene (C6H6) exists in home decoration pollution gas widely, which causes great harm to the environment and human health. Therefore, it is necessary to rationally design advanced materials with high selectivity to detect and capture C6H6. Herein, combined with the d-band center theory and cohesive energy, a new two-dimensional metal-organic framework material, Ni-doped hexaaminobenzene-based coordination polymer (Ni-HAB-CP) is designed, and its application potential as a C6H6 sensor are systematically investigated by using first principles calculation. The result shows that Ni-HAB-CP has a strong adsorption for C6H6 without any additional method. In addition, Ni-HAB-CP can maintain good conductivity before and after adsorption, and C6H6 can be easily desorbed from the surface of Ni-HAB-CP by charge control. Moreover, the I-V curve calculated by Atomistix Toolkit (ATK) reveals that Ni-HAB-CP has high sensitivity and selectivity to C6H6. Hence, Ni-HAB-CP is expected to be used as a potential material for a highly efficient and recyclable C6H6 sensor in the future. The calculation and analysis methods used in this paper could provide a certain theoretical basis and reference for the future research of gas sensors. (C) 2022 Published by Elsevier B.V. on behalf of Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences.

Automated summary

In this study, a new metal-organic framework material Ni-HAB-CP was designed and its application potential as a benzene sensor was investigated. The results show that Ni-HAB-CP has high adsorption capacity and selectivity for benzene, making it a promising candidate for a highly efficient and recyclable benzene sensor.