Effect of sodium dodecyl sulfate on CO2 and H2S absorption enhancement of functionalized multiwall carbon nanotubes in water: Experimental study and empirical model

Review and Perspectives of CO2 Absorption by Water- and Amine-Based Nanofluids

“…Some studies have also used a combination of two surface modifications to raise the stability of nanofluids. Jafari et al 79 combined hydroxyl and amino functionalization of MWCNT with the addition of surfactant SDS to nanofluids to enhance its stability. Rahimi et al 82 functionalized MWCNTs in two steps.…”

“…The second surface modification method involves non-covalently functionalizing nanoparticles with surfactants, nucleic acids, polymers, or oligomers, which results in the appearance of van der Waals forces between nanoparticles, although these forces are generally weak . Some practical surfactants include sodium dodecyl sulfate (SDS), sodium dodecyl benzenesulfonate (SDBS), cetyltrimethylammonium bromide (CTAB), gum arabic (GA), sodium polyacrylate (ASAP), and Tween 60. , Hamdi et al synthesized non-covalently functionalized graphene nanoplatelets (GNPs) by combining GA with an ultrasonic method. GA functionalizes the surface of the nanoparticles, which enhances the repulsive force between the particles.…”

“…The nanofluids treated with surfactants met the experimental stability requirements. Jafari et al 79 also tested the stability of nanofluids utilizing a zeta potential analyzer and added the surfactant of SDS to render MWCNT−water nanofluids more stable. By comparison of the stability of nanofluids with SDS added to nanofluids and without SDS, they concluded that, as a small amount of SDS was added to the nanofluids, the repulsive forces among nanoparticles enhanced and the stability was strengthened.…”