Interfacial crosslinked controlled thickness graphene oxide thin-films through dip-assisted layer-by-layer assembly means

Abstract

The augmentation of research in graphene based thin films has been of great interest to various current industrial stakeholders. This is mainly due to the wide scope of films applications, ranging from nanoelectronics to separation membranes. Therefore, establishing a relation between graphene based thin film key characteristics and the fabrication operating conditions is of high significance. This study entails the successful fabrication of controlled-thickness crosslinked graphene oxide (GO) thin films on inexpensive silicon-based glass slide substrates. The method of film fabrication used is the dip-assisted layer-by-layer assembly, which has an added advantage of step-control of thin film thickness, good film uniformity and continuity.

Gas Sensor Based on Lossy Mode Resonances by Means of Thin Graphene Oxide Films Fabricated onto Planar Coverslips

“…The GO was purchased from Graphenea, S.A. (San Sebastian, Spain) and polyethylenimine (PEI) was obtained from Sigma-Aldrich. LbL fabrication of PEI/GO thin-films is explained in detail elsewhere [ 22 ]. A 0.5 mg/mL GO dispersion, and 2 mg/mL PEI solution in DI water, were prepared.…”

Systematic covalent crosslinking of graphene oxide membranes using 1,3,5 triazine 2,4,6 triamine for enhanced structural intactness and improved nanofiltration performance

“…The suspension was then sonicated for 2 hours to hasten the individuality and stability of the suspension prior to fabrication. The control, uncrosslinked where just dip-coated while for the crosslinked membranes were fabricated using the dipassisted layer by layer method, alike in our previous studies [56][57][58][59]. Here, an interchangeable immersion between GO and MLM is undertaken in order to interconnect the GO nanosheets and the crosslinker.…”

Influence of graphene oxide's characteristics on the fabrication and performance of crosslinked nanofiltration membranes

“…The membrane fabrication via layer-by-layer assembly has been described in detail in previous works [19,39]. A rotary dip coater (ND-R 11/2, S/N: 522016) (Nadetech Innovations, Navarra, Spain) was used to alternatively immerse the pre-treated PAN substrates in the corresponding GO suspensions and PPD solutions.…”