DOI: 10.1016/j.jcou.2017.06.022
Scopus记录号: 2-s2.0-85021966757
论文题名: High-pressure investigation of ionic functionalized graphitic carbon nitride nanostructures for CO2 capture
作者: Ghosh S. ; Ramaprabhu S.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2017
卷: 21 起始页码: 89
结束页码: 99
语种: 英语
英文关键词: CO2 capture
; Graphitic carbon nitride nanosheets
; High pressure
; Ionic liquid functionalization
; Sievert's apparatus
Scopus关键词: Adsorption
; Binding sites
; Carbon nitride
; Energy efficiency
; Global warming
; Greenhouse gases
; Ionic liquids
; Liquids
; Nanosheets
; Nanostructures
; Nitrides
; Phase interfaces
; Energy-efficient techniques
; Functionalizations
; Graphitic carbon nitrides
; High nitrogen content
; High pressure
; High pressure adsorptions
; Physico-chemical adsorption
; Sievert's apparatus
; Carbon dioxide
英文摘要: Carbon dioxide is a major greenhouse gas responsible for the increase in global temperature which poses serious threat to the earth's environment and is a burning topic of research now-a-days. So, one of the promising and energy-efficient techniques adopted these days in order to capture this toxic gas is high pressure adsorption. In this particular work, we report the synthesis of graphitic carbon nitride nanosheets (NS-g-C3N4) using a very facile synthesis technique and its utility in adsorption of CO2 along with the ionic functionalization of NS-g-C3N4 with ionic liquid 1-Butyl-3-Methylimidazolium bis(trifluoromethyl sulfonyl)imide ([BMIM][TFSI]) and its CO2 adsorption properties. The CO2 adsorption analyses were carried on using high pressure Sievert's apparatus. NS-g-C3N4 shows a CO2 sorption capacity of 19.78 mmol/g at 15 bar pressure and 25 °C which is almost two times more than that of bulk g-C3N4 (8.54 mmol/g) under identical conditions. Besides, when NS-g-C3N4 is functionalized with ionic liquid, the interface between ionic liquid and NS-g-C3N4 significantly increases the sorption capacity to 42.93 mmol/g under nearly ideal conditions. The temperature is varied from 25 to 100 °C and pressure is varied from 2 to 25 bar. The high nitrogen content in graphitic carbon nitride nanostructures (56.6 at.%) acts as the active sites for binding the CO2 molecules while the non-covalent ionic liquid functionalization allows CO2 to interact with NS-g-C3N4/[BMIM][TFSI] by physicochemical adsorption mechanism and thereby enhances the CO2 capture. © 2017 Elsevier Ltd. All rights reserved. 资助项目: Indian Institute of Technology Madras
; Ministry of Human Resource Development
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52644
Appears in Collections: 影响、适应和脆弱性
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Recommended Citation:
Ghosh S.,Ramaprabhu S.. High-pressure investigation of ionic functionalized graphitic carbon nitride nanostructures for CO2 capture[J]. Journal of CO2 Utilization,2017-01-01,21