Abstract
The influence of ethylenediamine and bis(3-aminopropyl)amine insertion into graphite oxide using toluene and ethanol–water media was studied by elemental analysis, X-ray diffraction, X-ray photoelectron spectroscopy, thermogravimetry, temperature-programmed desorption and diffuse reflectance infrared Fourier transform spectroscopy. In every case, amine was incorporated between the basal planes and on the edges of the material through different interactions with epoxy, hydroxyl, carboxyl and carbonyl groups resulting in new-layered materials. Results show that incorporation was homogeneous for ethylenediamine irrespective of the solvent and that the higher level of intercalation in non-polar media was probably a consequence of the inhibition of competitive reactions with the solvent. For bis(3-aminopropyl)amine, the higher reaction times required to obtain satisfactory degrees of intercalation in the non-polar solvent suggests that with this solvent the process is kinetically controlled for longer chain am...
Highlights
Graphite oxide (GO) is a pseudo-two-dimensional layered carbonaceous material rich in oxygencontaining functional groups whose composition depends on the level of oxidation
We have explored the incorporation of two different amines, a diamine and a triamine, inside the nanospace of a lab-prepared GO
The 001 reflection peak for GOE-t and GOT-t-96 was shifted to lower angles compared to those for samples prepared in ethanol (GOE and GOT), which implied higher interlayer spacing (0.75 and 0.85 nm)
Summary
Graphite oxide (GO) is a pseudo-two-dimensional layered carbonaceous material rich in oxygencontaining functional groups whose composition depends on the level of oxidation. It is generally accepted that it consists of randomly distributed intact graphitic regions and regions of aliphatic six-membered rings.[1] Epoxy and hydroxyl functionalities lie above and below these carbon layers while carbonyl groups and carboxylic acid groups having strong acidic character decorate the sheet edges.[2] This variety of functional groups bound to the carbon sheets makes the material strongly hydrophilic and gives rise to interesting properties like cation exchange capacity and rich intercalation ability. Great attention in recent years has been paid to the preparation of intercalated GO composites by intercalation of polar organic molecules, polymers or inorganic materials inside the nanospace between the layers by different methods.[3,4,5,6] the exfoliation and subsequent reduction of GO has been proposed as a promising route for largescale production of graphene sheets and graphene-based materials.[7,8] The electrical, optical and mechanical properties have urged the application of these materials in the fabrication of microelectronic devices
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
