Surface-microporous graphene for CO2 adsorption

Authors

Yanqin Tian, Shanghai Jiao Tong University
Yan Lin, Shanghai Jiao Tong University
Takeshi Hagio, Nagoya University
Yun Hang Hu, Michigan Technological UniversityFollow

Document Type

Article

Publication Date

1-1-2020

Department

Department of Materials Science and Engineering

Abstract

As an important greenhouse gas, CO2 attracts much attention due to its increasing emission. The adsorption and conversion of CO2 are effective ways to capture and utilize CO2, respectively. Herein, 3D graphene with surface-microporous structure, which was synthesized directly from CO2, was demonstrated as an efficient adsorbent for CO2 adsorption. The surface-microporous structure possesses advantages in the mass diffusion process and exposure of adsorption sites for CO2, achieving a high adsorption capacity of 2.28 mmol g−1 at 298 K and 1 bar. The adsorption capacity was further increased to 3.13 mmol g−1 by KOH activation. Such a great improvement can be attributed to the increased oxygen-functional groups.

Publisher's Statement

© 2020 Elsevier B.V. Publisher’s version of record: https://doi.org/10.1016/j.cattod.2020.06.002

Publication Title

Catalysis Today

Recommended Citation

Tian, Y., Lin, Y., Hagio, T., & Hu, Y. (2020). Surface-microporous graphene for CO2 adsorption. Catalysis Today. http://doi.org/10.1016/j.cattod.2020.06.002
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/2042