Effects of CTAB concentration on the quality of graphene oxide nanosheets produced by green laser ablation

Synthesis of γ-alumina (Al2O3) nanoparticles and their potential for use as an adsorbent in the removal of methylene blue dye from industrial wastewater

“…[26][27][28][29] Moreover, the use of surfactants like cetyltrimethylammonium bromide (CTAB), tetrapropylammonium bromide (TPAB), polyethylene glycol (PEG), sodium dodecyl sulfate (SDS) and polyvinyl pyrrolidone can help in the formation of special morphologies. [30][31][32][33] Another nonionic surfactant, polyoxyethylene sorbitan monooleate, commercially known as Tween-80, also plays an important role in directing the morphology and size formation of nanomaterials. 34 We have recently described some new cross-linked hybrid materials, based on ferrocene and cyclotriphosphazene, that have excellent electrochemical and uorescence properties.…”

Preparation of Few-Layer Graphene Dispersions from Hydrothermally Expanded Graphite

“…Subsequently, pretreated graphite is exfoliated into FLG by sonication and centrifugation. The cationic surfactant, hexadecyltrimethylammonium bromide (CTAB), is selected as a dispersant and a stabilizer [16,17]. CTAB is commonly considered as the dispersing agent to stabilize aqueous solutions of graphene [18] and it has also been used as the precursor for preparing graphene nanocomposites [19] with promising applications in electrochemical sensing and biosensing [20].…”

Graphene Nanostructures by Pulsed Laser Ablation in Liquids: A Review

“…To further investigate the optimized conditions for producing GO nanosheets, the effect of different concentrations of CTAB as a liquid medium was investigated [ 79 ]. The emphasis on CTAB is due to the possibility of improving the problem of graphene-oxide nanosheet aggregation.…”

“…It was concluded that to improve the quality of the GO nanosheets, there should be a balance between the negative charge of the oxygen functional groups and the positive charge of CTAB molecules. This balance was reached when the concentration of CTAB was 0.04 M [ 79 ] ( Figure 18 ). When comparing 0.04 M CTAB as a liquid medium with liquid nitrogen [ 80 ], it was found that liquid nitrogen produced higher-quality multilayer graphene, while 0.04 M CTAB randomly stacked multilayer GO nanosheets.…”

“… TEM images of GO nanosheets in different concentrations of CTAB: ( a ) 0.02 M, ( b ) 0.04 M, ( c ) 0.06 M, ( d ) 0.08 M, and ( e ) 0.1 M. Reprinted with permission from Ref. [ 79 ]. 2018, Elsevier.…”