共 61 条
Ultra-microporous cotton fiber-derived activated carbon by a facile one-step chemical activation strategy for efficient CO2 adsorption
被引:41
作者:
Xing, Li-an
[1
]
Yang, Fu
[1
,2
,4
]
Zhong, Xiu
[1
]
Liu, Yang
[1
]
Lu, Hao
[1
]
Guo, Zengjing
[3
]
Lv, Guojun
[1
]
Yang, Jinbei
[5
]
Yuan, Aihua
[1
]
Pan, Jianming
[1
,2
]
机构:
[1] Jiangsu Univ Sci & Technol, Sch Environm & Chem Engn, Zhenjiang 212003, Jiangsu, Peoples R China
[2] Jiangsu Univ, Sch Chem & Chem Engn, Zhenjiang 212013, Peoples R China
[3] Liaocheng Univ, Sch Chem & Chem Engn, Liaocheng 252000, Shandong, Peoples R China
[4] Jiangsu SOPO Polyester Technol Co Ltd, Zhenjiang 212000, Peoples R China
[5] Jiangsu Purestar Environm Protect Technol Co LTD, Suzhou 215634, Peoples R China
基金:
中国国家自然科学基金;
关键词:
Cotton fibers;
CO;
2;
capture;
Biomass carbon;
One-step activation;
Ultra-micropores;
Structural property;
Reusability;
HIGH-SURFACE-AREA;
POROUS CARBON;
CAPTURE;
PERFORMANCE;
SELECTIVITY;
CHITOSAN;
D O I:
10.1016/j.seppur.2023.124470
中图分类号:
TQ [化学工业];
学科分类号:
0817 ;
摘要:
The CO2 capture by absorbent shows a great promise to remit the pressure of CO2 discharge. The functionalization of N surfaces and the development of the surface area in activation modification have received a great deal of attention as important factors influencing CO2 adsorption performance. However, the role of ultra-micropores in the capture by size matching of CO2 by adjusting the CO2 size and the absorbent pore structure has been less studied to some extent. The study provides a simple one-step chemical activation method, in which cotton fibers were utilized as biomass sources to construct ultra-microporous carbon absorbent with a simple and effective tunable pore structure by changing the alkali-carbon ratio and activation temperature. The series of samples both showed high CO2 adsorption at normal pressure, in particular, the optimal sample CC2-800 affords 4.43 mmol g-1 CO2 uptake at 298 K and 6.58 mmol g-1 CO2 uptake at 273 K. Impressively, the optimal adsorbent was endowed with extremely low adsorption heat, thereby showing good reversibility and reusability during multiple-cycle tests at room temperature. By a comprehensive study of the structural characteristics of the adsorbent, this research further validates the significant role of ultra-micropores in CO2 adsorption. Additionally, the simple one-step preparation process shows crucial significance for sustainable development and environmental friendliness, which provides some interesting insights for the design and development of ultramicroporous activated carbon.
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页数:11
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