Enhanced CO2 adsorption of activated carbon with simultaneous surface etching and functionalization by nitrogen plasma treatment

서지정보

ㆍ발행기관 : 한국탄소학회 ㆍ수록지정보 : Carbon letters / 33권 / 1호
ㆍ저자명 : Chaehun Lim, Cheol Hwan Kwak, Seo Gyeong Jeong, Daesup Kim, Young‑Seak Lee

목차

Abstract
1 Introduction
2 Experimental
2.1 Preparation of nitrogen plasma-treated AC
2.2 Characterization of as-prepared AC
2.3 CO2 adsorption ability of as-prepared AC
3 Results and discussion
3.1 Surface chemistries of the as-prepared AC samples
3.2 Porosity of the as-prepared AC samples
3.3 CO2 adsorption property of the as-prepared AC samples
4 Conclusion
Acknowledgements
References

영어 초록

Removing CO2 gas to address the global climate crisis is one of the most urgent agendas. To improve the CO2 adsorption ability of activated carbon, nitrogen plasma surface treatment was conducted. The effect of nitrogen plasma treatment on the surface chemistry and pore geometry of activated carbon was extensively analyzed. The porosity and surface groups of the activated carbon varied with the plasma treatment time. By plasma treatment for a few minutes, the microporosity and surface functionality could be simultaneously controlled. The changed microporosity and nitrogen groups affected the CO2 adsorption capacity and CO2 adsorption selectivity over N2. This simultaneous surface etching and functionalization effect could be achieved with a short operating time and low energy consumption.

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