Understanding the synergy between N-doped ultra-microporous carbonaceous adsorbent and nitrogen functionalities for high performance of CO2 sorption

doi:10.1016/j.jece.2020.104646

IEECAS OpenIR > 黄土与第四纪地质国家重点实验室（2010~）

	Understanding the synergy between N-doped ultra-microporous carbonaceous adsorbent and nitrogen functionalities for high performance of CO2 sorption
	Ahmed, Rafay 1; Liu, Guijian 1,2; Yousaf, Balal 1,2; Rehman, Abdul 1; Munir, Mehr Ahmed Mujtaba 1; Irshad, Samina 1; Rashid, Muhammad Saqib 1; Cheema, Ayesha Imtiyaz 1
通讯作者	Liu, Guijian(lgj@ustc.edu.cn)
	2021-02-01
发表期刊	JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
卷号	9 期号:1 页码:14
摘要	Porous carbonaceous adsorbents are believed to encourage contenders to CO2 uptake however their high production cost has urged researchers towards cheap renewable. In this study, nitrogen-doped carbonaceous adsorbents with high ultra-microporous structure were synthesized by carbonization and activation of chitosan along with urea and KOH simultaneously at various temperatures (600-900 degrees C). The effects of temperature, urea modification, and chemical activation on nitrogen functionalities and development of porous structure were analyzed. Results showed that porous carbons synthesized with urea and KOH modification at 700 degrees C exhibit the highest CO2 adsorption value (5.92 mmol g(-1) at 0 degrees C and 4.45 mmol g(-1) at 25 degrees C). Enhanced adsorption by NCABC-700 was found due to synergistic effect of nitrogen as well as high specific surface area (1404 m(2) g(-1)) and micropore volume (0.68 cm(3) g(-1)), respectively. Furthermore, best fitting of Freundlich isotherm model explained heterogeneous nature of adsorbent. Isosteric heat of adsorption with a value of 42.2 kJ mol(-1), also indicated the presence of N containing functional groups and a high number of micropores that created a strong interaction between adsorbent and adsorbate, helping in high CO2 uptake.
关键词	Chitosan CO2 adsorption Nitrogen modification Chemical activation Isosteric heat of adsorption
DOI	10.1016/j.jece.2020.104646
收录类别	SCI ; SCI
语种	英语
资助项目	National Natural Science Foundation of China[41173032] ; Key Program for Science and Technology Development of Anhui Province[1804b06020358]
WOS研究方向	Engineering
项目资助者	National Natural Science Foundation of China ; Key Program for Science and Technology Development of Anhui Province
WOS类目	Engineering, Environmental ; Engineering, Chemical
WOS记录号	WOS:000615242600007
出版者	ELSEVIER SCI LTD
引用统计	被引频次：19[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/15965
专题	黄土与第四纪地质国家重点实验室（2010~）
通讯作者	Liu, Guijian
作者单位	1.Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Crust Mantle Mat & Environm, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Ahmed, Rafay,Liu, Guijian,Yousaf, Balal,et al. Understanding the synergy between N-doped ultra-microporous carbonaceous adsorbent and nitrogen functionalities for high performance of CO2 sorption[J]. JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING,2021,9(1):14.
APA	Ahmed, Rafay.,Liu, Guijian.,Yousaf, Balal.,Rehman, Abdul.,Munir, Mehr Ahmed Mujtaba.,...&Cheema, Ayesha Imtiyaz.(2021).Understanding the synergy between N-doped ultra-microporous carbonaceous adsorbent and nitrogen functionalities for high performance of CO2 sorption.JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING,9(1),14.
MLA	Ahmed, Rafay,et al."Understanding the synergy between N-doped ultra-microporous carbonaceous adsorbent and nitrogen functionalities for high performance of CO2 sorption".JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 9.1(2021):14.