| DOI: | 10.1016/j.jcou.2014.01.001
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| Scopus记录号: | 2-s2.0-84893738838
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| 论文题名: | CO2 adsorption on crystalline graphitic nanostructures |
| 作者: | Casco M.E.; Morelos-Gómez A.; Vega-Díaz S.M.; Cruz-Silva R.; Tristán-López F.; Muramatsu H.; Hayashi T.; Martínez-Escandell M.; Terrones M.; Endo M.; Rodríguez-Reinoso F.; Silvestre-Albero J.
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| 刊名: | Journal of CO2 Utilization
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| ISSN: | 22129820
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| 出版年: | 2014
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| 卷: | 5 | | 起始页码: | 60
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| 结束页码: | 65
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| 语种: | 英语
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| 英文关键词: | Carbon
; CO2 capture
; Graphene
; MWCNTs
; Nanoribbons
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| Scopus关键词: | Acid treatments
; Adsorption capacities
; Adsorption process
; Adsorption properties
; Different treatments
; Graphene nanoribbons
; MWCNTs
; Surface functional groups
; Adsorption
; Carbon
; Doping (additives)
; Functional groups
; Graphene
; Nanoribbons
; Nanostructures
; Surface defects
; Thermal expansion
; Carbon dioxide
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| 英文摘要: | CO2 adsorption has been measured in different types of graphitic nanostructures (MWCNTs, acid treated MWCNTs, graphene nanoribbons and pure graphene) in order to evaluate the effect of the different defective regions/conformations in the adsorption process, i.e., sp3 hybridized carbon, curved regions, edge defects, etc. This analysis has been performed both in pure carbon and nitrogen-doped nanostructures in order to monitor the effect of surface functional groups on surface created after using different treatments (i.e., acid treatment and thermal expansion of the MWCNTs), and study their adsorption properties. Interestingly, the presence of exposed defective regions in the acid treated nanostructures (e.g., uncapped nanotubes) gives rise to an improvement in the amount of CO2 adsorbed; the adsorption process being completely reversible. For N-doped nanostructures, the adsorption capacity is further enhanced when compared to the pure carbon nanotubes after the tubes were unzipped. The larger proportion of defect sites and curved regions together with the presence of stronger adsorbent-adsorbate interactions, through the nitrogen surface groups, explains their larger adsorption capacity. © 2014 Elsevier Ltd. All rights reserved. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/52997
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| Appears in Collections: | 影响、适应和脆弱性
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| Recommended Citation: | |
Casco M.E.,Morelos-Gómez A.,Vega-Díaz S.M.,et al. CO2 adsorption on crystalline graphitic nanostructures[J]. Journal of CO2 Utilization,2014-01-01,5
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