Ionic liquid-mediated functionalization of graphene-based materials for versatile applications: a review

Electrochemical carbon dioxide capture to close the carbon cycle

“…CO 2 is a weak acid. Therefore, substrates that contain basic moieties such as amine groups (e.g., alkanolamines) are efficient absorbents for CO 2 capture [277]. Amines are derivatives of ammonia (NH 3 ), containing a basic nitrogen atom, where one (R−NH 2 ) or more hydrogen atoms have been replaced by a substituent.…”

Nanocellulose-Graphene Hybrids: Advanced Functional Materials as Multifunctional Sensing Platform

“…ILs could be easily ecofriendly dispersed, stabilized, and reduced GO. GO-ILs stabilization, dispersion, and reduction mostly involve covalent and non-covalent donor-acceptor interactions and electrostatic forces [21,[123][124][125]. For instance, Zhang et al [126] successfully prepared a stable dispersed and reduced GO by ILs without surface modification.…”

“…Interestingly, studies have been found that NCs can assist dispersion and stability and enhance the interlayer interaction between GO nanosheets [19]. The necessity of modification is attributable to the GO hard dispersibility in conventional solvents, limiting the adaption in practical application [20][21][22][23][24]. Also, ionic liquids (ILs) as green solvent are considered as a new and versatile platform for the dissolving, dispersion, and modifying of various nanomaterials, including NCs and GO due to their combined unique properties as high chemical-thermal stability, high ionic-electrical conductivity, non-flammability, non-volatility, and ease of recycling [24][25][26].…”

Recent advances in the catalytic applications of GO/rGO for green organic synthesis

“…Owing to their high thermal and chemical stability, low volatility, very high ability to dissolve a wide variety of compounds and more significantly, their environmentally friendly behavior [153], surface functionalization of G and GO using ionic liquids is gaining particular importance recently. The ionic liquid-functionalized graphene (G-IL/GO-IL) has been extensively used in pollutant decontamination, enhancement of styrenebutadiene rubber nanocomposites, high-temperature proton exchange membrane fuel cell, sensing and biosensing, lubrication, catalysis and carbon dioxide capturing and hydrogen production [154][155][156][157][158][159].…”

“…The ionic liquid-functionalized graphene (G-IL/GO-IL) has been extensively used in pollutant decontamination, enhancement of styrenebutadiene rubber nanocomposites, high-temperature proton exchange membrane fuel cell, sensing and biosensing, lubrication, catalysis and carbon dioxide capturing and hydrogen production [154][155][156][157][158][159]. Moreover, ionic liquids interact strongly with the sp 2 -hydridized G and GO sheet carbon networks because of their high dipolar nature and make them more dispersible compared to their native networks [153]. It is established that acylation, isocyanate formation, esterification, amide formation, nucleophilic ring opening, diazotization and cycloaddition reactions generally facilitate the covalent functionalization of G and GO [33,160].…”