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Enhancing the CO2 separation performance of composite membranes by the incorporation of amino acid-functionalized graphene oxide
Xin, QP; Li, Z; Li, CD; Wang, SF; Jiang, ZY; Wu, H; Zhang, Y; Yang, J; Cao, XZ; Yang J(杨静); Cao XZ(曹兴忠)
2015
发表期刊JOURNAL OF MATERIALS CHEMISTRY A
卷号3期号:12页码:6629-6641
文章类型Article
摘要Composite membranes are fabricated by incorporating amino acid-functionalized graphene oxide (GO-DA-Cys) nanosheets into a sulfonated poly(ether ether ketone) (SPEEK) polymer matrix. Graphene oxide (GO) nanosheets are functionalized with amino acids through a facile two-step method using dopamine (DA) and cysteine (Cys) in succession. The CO2 separation performance of the as-prepared membranes is evaluated for CO2/CH4 and CO2/N-2 systems. GO nanosheets increase more tortuous paths for larger molecules, enhancing the diffusivity selectivity. Amino acids with carboxylic acid and primary amine groups simultaneously enhance the solubility selectivity and reactivity selectivity. Accordingly, CO2 molecules can transport quickly due to the enhanced selectivity. The optimum separation performance is achieved at the GO-DA-Cys content of 8 wt% with selectivities of 82 and 115 for CO2/CH4 and CO2/N-2, respectively, and a CO2 permeability of 1247 Barrer, significantly surpassing the Robeson upper bound reported in 2008. Besides, the mechanical and thermal stabilities of the composite membranes are also improved compared with the pristine SPEEK membrane.
学科领域Chemistry; Energy & Fuels; Materials Science
DOI10.1039/c5ta00506j
收录类别SCI ; EI
WOS类目Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS记录号WOS:000351227300051
引用统计
被引频次:39[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228278
专题多学科研究中心
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Xin, QP,Li, Z,Li, CD,et al. Enhancing the CO2 separation performance of composite membranes by the incorporation of amino acid-functionalized graphene oxide[J]. JOURNAL OF MATERIALS CHEMISTRY A,2015,3(12):6629-6641.
APA Xin, QP.,Li, Z.,Li, CD.,Wang, SF.,Jiang, ZY.,...&曹兴忠.(2015).Enhancing the CO2 separation performance of composite membranes by the incorporation of amino acid-functionalized graphene oxide.JOURNAL OF MATERIALS CHEMISTRY A,3(12),6629-6641.
MLA Xin, QP,et al."Enhancing the CO2 separation performance of composite membranes by the incorporation of amino acid-functionalized graphene oxide".JOURNAL OF MATERIALS CHEMISTRY A 3.12(2015):6629-6641.
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