Preparation of Modified Reduced Graphene Oxide nanosheet with Cationic Surfactant and its Dye Adsorption Ability from Colored Wastewater

Abstract

In this paper, reduced graphene oxide (rGO) nanosheet from graphite was synthesized using the top‐down approach. The surface of rGO was modified by cetyltrimethylammonium bromide (CTAB) to prepare rGO/CTAB adsorbent for anionic dye removal. The prepared rGO/CTAB was characterized by XRD, FTIR, FE‐SEM and TGA. The operation parameters (surfactant concentration, adsorbent dosage, pH and initial concentration of dye solution) affecting the batch adsorption process to remove direct red 80 (DR80) and direct red 23 (DR23) were studied in detail. The dye adsorption capacity of rGO/CTAB was 213 and 79 mg/g for DR80 and DR23, respectively. In addition, dye removal followed the Langmuir isotherm with pseudo‐second order reaction kinetics.

Investigating the Properties of Cetyltrimethylammonium Bromide/Hydroxylated Graphene Quantum Dots Thin Film for Potential Optical Detection of Heavy Metal Ions

“…On the other hand, the spectrum of the CTAB/HGQDs revealed the combination effect upon the introduction of CTAB to the HGQDs where most peaks shifted to higher wavenumbers when compared to the spectrum of HGQDs [60,61]. It is important to note that the FTIR spectrum of CTAB/HGQDs follows the FTIR spectrum of HGQDs mainly because of the smaller ratio of CTAB compared to HGQDs.…”

Removal of methylene blue dye by solvothermally reduced graphene oxide: a metal-free adsorption and photodegradation method

“…15 Recently, rGO has shown increasing usage in dye adsorption application. 16,17 Owing to the presence of remaining surcial oxygen functionalities, along with some defects in the graphitic domains, rGO is deemed efficient for the adsorptive removal of dyes. 18 Generally, rGO interacts with dyes through p-p interaction, electrostatic interaction, hydrophobic association and structural conjugation.…”

The Effects of Asymmetry in Combination with Reduced Graphene Oxide Nanosheets on Hydrazine Electrocatalytic Detection on Cobalt Phthalocyanines

“…The D/G ratio of 1.06 was obtained. Figure 2(c) shows XRD patterns for rGONS, the characteristic broad peak at 25°which corresponds to (002) plane [31]. Figure 3 shows the CVs of probes in 1 mM K 3 [Fe(CN) 6 ]/ K 4 [Fe(CN) 6 ].…”