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Graphene oxide grafted hyperbranched poly (vinyl imidazole) with ionic liquid components as a potential carbon dioxide scrubber
Reactive & Functional Polymers ( IF 4.5 ) Pub Date : 2019-11-21 , DOI: 10.1016/j.reactfunctpolym.2019.104432
Tamalika Das , Srijoni Sengupta , Animesh Jana , Abhijit Pal , Indranil Roy , Soumen Sardar , Nayan Ranjan Saha , Sourja Ghosh , Abhijit Bandyopadhyay

The present work focuses on the design of a CO2 scavenger, capable of adsorbing a low concentration of CO2 from a mixed gas composition. Typically, vinyl imidazole and an ionic liquid brancher were copolymerized by “Strathclyde methodology” and grafted from graphene oxide; GO-g-(HB) PVIm-co-PIL (Cl). The chain transfer agent maintained short chains and developed hyperbranched architecture in GO-g-(HB) PVIm-co-PIL (Cl). The structure and the properties of GO-g-(HB) PVIm-co-PIL (Cl) was established from FTIR, 1HNMR, Raman, XRD and rheology. A metathesis reaction was carried out to exchange chloride anions with hexafluorophosphate anions; GO-g-(HB) PVIm-co-PIL (PF6). GO-g-(HB) PVIm-co-PIL (PF6) selectively captured a low concentration of CO2 from a mixed gas. The surface functionalities/ properties of GO, hyperbranched architecture, porosity, nitrogen content and surface charge distribution together played a significant role in efficient and selective CO2 capture.



中文翻译:

氧化石墨烯接枝的超支化聚(乙烯基咪唑),具有离子液体成分,可作为潜在的二氧化碳洗涤塔

目前的工作集中在能够清除混合气体成分中低浓度的CO 2的CO 2清除剂的设计上。通常,乙烯基咪唑和离子液体支化剂通过“ Strathclyde方法”进行共聚,然后从氧化石墨烯接枝;GO-g-(HB)PVIm-co-PIL(Cl)。链转移剂在GO-g-(HB)PVIm-co-PIL(Cl)中维持短链并发展了超支链结构。通过FTIR,1 HNMR,Raman,XRD和流变学建立了GO-g-(HB)PVIm-co-PIL(Cl)的结构和性质。进行复分解反应以将氯阴离子与六氟磷酸根阴离子交换;GO-g-(HB)PVIm-co-PIL(PF 6)。GO-g-(HB)PVIm-co-PIL(PF 6)选择性地从混合气体中捕获了低浓度的CO 2。GO的表面功能/特性,超支化结构,孔隙率,氮含量和表面电荷分布在有效和选择性的CO 2捕获中起着重要作用。

更新日期:2019-11-21
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