Effect Of Head Group Research Articles

Experimental and theoretical investigation of novel ammonium-derived dihydroxyl ionic liquid as corrosion inhibitor for mild steel in 1 M HCl: Effects of dihydroxyl and head groups

A novel ammonium-derived dihydroxyl ionic liquid ([C16DPOA]Br) and a control ionic liquid ([C16DPA]Br) are synthesized to reveal the effect of dihydroxyl and head groups on their inhibition property via the weight-loss method, surface analysis, electrochemical measurements, and adsorption isotherm studies. [C16DPOA]Br exhibits the optimal inhibition ability (93.47 %) for mild steel in 1 M HCl in contrast to [C16DPA]Br (88.03 %) and the traditional cationic surfactant CTAB (92.34 %). Based on the experimental results, it can be inferred that the short alkyl chain (propyl) impedes the tight alignment of [C16DPA]Br on the metal surface and the interactions between hydroxyl and iron atoms enable [C16DPOA]Br to overcome the negative effects of the short alkyl chain on the inhibition property. Finally, molecular electrostatic potential (MEP) distribution and molecular dynamics (MD) simulation verify the reactive sites and adsorption capacity of corrosion inhibitors from the microscopic scale, which further confirms the proposed mechanism. This study focuses on the significance of dihydroxyl and head groups on the inhibition property and provides unique insights into the development of efficient ionic liquid corrosion inhibitors.

Phase behavior of lyotropic alkyl thioglycolipid surfactants: Effects of sugar headgroup and alkyl tail length

AbstractThe lyotropic properties of alkyl thioglycosides with varying sugar headgroup (lactose, cellobiose, maltose, galactose, or glucose) and alkyl chain length (octyl, decyl, or dodecyl chains) are investigated by surface tensiometry, visual observation, and fluorescence spectroscopy. The results substantiate that the glycosidic S‐linkage confers considerably different solution aggregation behavior on these surfactants relative to their O‐linked counterparts, where the properties of the latter are known. The materials properties of the aggregated structures from the alkyl thioglycosides vary considerably. Micelles are formed by octyl thiocellobioside and all alkyl thiomaltosides. Turbid aggregate solutions are formed by the alkyl thioglucosides and octyl thiogalactoside, whereas the longer chain alkyl thiogalactosides are minimally soluble. Fluorescence spectroscopy of these systems confirms their aggregation in lamellar‐like structures. The alkyl thiocellobiosides and alkyl thiolactosides form hydrogels from these low‐molecular weight materials at concentrations almost an order of magnitude lower than gels using other low‐molecular weight materials. Here, hydrogels form at concentrations <0.3 wt% with some forming hydrogels at concentrations as low as 0.03 wt% from alkyl thiocellobiosides and thiolactosides, with hydrogel properties differing significantly with this slight change in the sugar headgroup. Alkyl thiocellobiosides form a nanofiber network and alkyl thiolactosides form globular hydrogels. Overall, these results clearly document materials properties that can readily be controlled and designed depending on molecular structure.

Modulation of Gold Nanoparticle Ligand Structure-Dynamic Relationships Probed Using Solution NMR.

Ligand dynamics plays a critical role in the chemical and biological properties of gold nanoparticles (AuNPs). In this study, ligands featuring hydrophobic alkanethiol interiors and hydrophilic shells were used to systematically examine the effects of ligand headgroups on the ligand dynamics. Solution nuclear magnetic resonance (NMR) spectroscopy provided quantitative insight into the monolayer ligand dynamics. Notably, the introduction of hydrophobic moieties to the cationic headgroups significantly decreased ligand conformational mobility; however, variations in hydrophobicity among these moieties had a limited effect on this reduction. Further examination of ligand dynamics under various physiological conditions, including ionic strength and temperature, showed that ligands bound to the AuNP surface become less conformationally mobile with an increase in ionic strength or decreasing temperature. This exploration of ligand dynamics provides insight into designing nanoparticles tailored to specific biological applications.

Delineating effect of headgroup and preparation method on transfection versus toxicity of DNA-loaded lipid nanocarriers.

Aim: To perform a parallel comparison of key parameters affecting the safety and efficiency of lipid-based nanovectors (i.e., complexing headgroups, composition and preparation method). Materials & methods: Various cationic and ionizable headgroups were screened for formulating lipoplexes with GFP-plasmid DNA. Ethanol injection and microfluidics were used to prepare nanoparticles with GFP-plasmid DNA complexed on the surface or within the interior of lipid bilayers. Results: Lipoplexes composed of sphingomyelin 102 exhibited the highest transfection efficiency given their higher cellular uptake in BRAF inhibitor-resistant melanoma cells. Lipid nanoparticlesdemonstrated acceptable transfection efficiency and high spheroid penetration while protecting plasmid DNA under simulated physiological conditions. Conclusion: Selecting the right complexing lipid and preparation method is critical for developing lipid nanocarriers to treat intractable diseases.

Effect of phospholipid head group on ultrasound-triggered drug release and cellular uptake of immunoliposomes

Liposomes are the most successful nanoparticles used to date to load and deliver chemotherapeutic agents to cancer cells. They are nano-sized vesicles made up of phospholipids, and targeting moieties can be added to their surfaces for the active targeting of specific tumors. Furthermore, Ultrasound can be used to trigger the release of the loaded drugs by disturbing their phospholipid bilayer structure. In this study, we have prepared pegylated liposomes using four types of phospholipids with similar saturated hydrocarbon tails including a phospholipid with no head group attached to the phosphate head (DPPA) and three other phospholipids with different head groups attached to their phosphate heads (DPPC, DPPE and DPPG). The prepared liposomes were conjugated to the monoclonal antibody trastuzumab (TRA) to target the human epidermal growth factor receptor 2 (HER2) overexpressed on HER2-positive cancer cells (HER2+). We have compared the response of the different formulations of liposomes when triggered with low-frequency ultrasound (LFUS) and their cellular uptake by the cancer cells. The results showed that the different formulations had similar size, polydispersity, and stability. TRA-conjugated DPPC liposomes showed the highest sensitivity to LFUS. On the other hand, incubating the cancer cells with TRA-conjugated DPPA liposomes triggered with LFUS showed the highest uptake of the loaded calcein by the HER2+ cells.

Interactions of REF1 and SRPP1 rubber particle proteins from Hevea brasiliensis with synthetic phospholipids: Effect of charge and size of lipid headgroup

According to the fatty acid and headgroup compositions of the phospholipids (PL) from Hevea brasiliensis latex, three synthetic PL were selected (i.e. POPA: 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphate POPC: 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine and POPG: 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphoglycerol) to investigate the effect of PL headgroup on the interactions with two major proteins of Hevea latex, i.e. Rubber Elongation Factor (REF1) and Small Rubber Particle Protein (SRPP1). Protein/lipid interactions were screened using two models (lipid vesicles in solution or lipid monolayers at air/liquid interface). Calcein leakage, surface pressure, ellipsometry, microscopy and spectroscopy revealed that both REF1 and SRPP1 displayed stronger interactions with anionic POPA and POPG, as compared to zwitterionic POPC. A particular behavior of REF1 was observed when interacting with POPA monolayers (i.e. aggregation + modification of secondary structure from α-helices to β-sheets, characteristic of its amyloid aggregated form), which might be involved in the irreversible coagulation mechanism of Hevea rubber particles.

Infrared Reflection-Absorption Spectroscopy of α-Keto Acids at the Air-Water Interface: Effects of Chain Length and Headgroup on Environmentally Relevant Surfactant Films.

A variety of organic surfactants are found at air-water interfaces in natural environments, including on the surfaces of aqueous aerosols. The structure and morphology of these organic films can have profound impacts on material transfer between the gas and condensed phases, the optical properties of atmospheric aerosol, and chemical processing at air-water interfaces. Combined, these effects can have significant impacts on climate via radiative forcing, but our understanding of organic films at air-water interfaces is incomplete. Here, we examine the impact of the polar headgroup and alkyl tail length on the structure and morphology of organic monolayers at the air-water interfaces. First, we focus on the substituted carboxylic acids, α-keto acids, using Langmuir isotherms and infrared reflection absorption spectroscopy (IR-RAS) to elucidate key structures and phase behaviors of α-keto acids with a range of surface activities. We show that the structure of α-keto acids, both soluble and insoluble, at water surfaces is a compromise between van der Waals interactions of the hydrocarbon tail and hydrogen bonding interactions involving the polar headgroup. Then, we use this new data set regarding α-keto acid films at water surfaces to examine the role of the polar headgroup on organic films using a similar substituted carboxylic acid (α-hydroxystearic acid), an unsubstituted carboxylic acid (stearic acid), and an alcohol (stearyl alcohol). We show that the polar headgroup and its hydrogen bonding interactions can significantly affect the orientation of amphiphiles at air-water interfaces. Here, we provide side-by-side comparisons of Langmuir isotherms and IR-RA spectra for a set of environmentally relevant organic amphiphiles with a range of alkyl tail lengths and polar headgroup structures.

Evaluating the Potential of Zwitterionic Surfactants for Enhanced Oil Recovery: Effect of Headgroups and Unsaturation

Surfactants increase the capillary number and resultantly pore-scale displacement efficiency by lowering interfacial tension (IFT) and changing wettability of the rock. However, conventional surfactants precipitate under harsh reservoir conditions such as high temperature and high salinity, thereby limiting their efficiency for oil recovery. As compared to other surfactants, zwitterionic surfactants have good salinity and thermal tolerance. In this work, six in-house developed zwitterionic surfactants with sterling thermal and salinity tolerance were investigated for their behavior at the oleic–aqueous interface. The IFT behavior was investigated by varying the hydrophilic headgroups and the degree of unsaturation in the hydrophobic tail of the surfactants. Additionally, the wettability alteration behavior of the surfactants was evaluated at elevated temperature and pressure. Experimental results depict that the synthesized betaine-type surfactants demonstrated exemplary stability and efficiency for EOR. The surfactants reduced the IFT at the oleic–aqueous interface and changed the wettability of carbonate porous media toward aqueous-wetting conditions. The surfactant headgroup influenced wettability alteration behavior in the order hydroxysulfonate > sulfonate > carboxy group. Meanwhile, the introduction of unsaturation decreased the surfactant wettability alteration behavior. Finally, oil recovery results from the spontaneous imbibition experiment on carbonates depict that the zwitterionic surfactants recovered 31.3–44.1% OOIP.

Polyunsaturated fatty acids and the effect of phospholipid headgroup on lipid rafts.

Omega-3 polyunsaturated fatty acids (n-3 PUFA) are commonly consumed in fish oil supplements for a variety of associated health benefits. Here we investigate the premise that there is an underlying mechanism by which n-3 PUFA incorporated into membrane phospholipids regulate the architecture and functionality of lipid rafts. We ran coarse-grained (CG) MD simulations on lipid mixtures comprised in 1:1:1 mol ratio of palmitoyl sphingomyelin (PSM) and cholesterol with 1-palmitoyl-2-docosahexaenoylphosphatidylcholine (PDPC) or 1-palmitoyl-2-oleoylphosphatidylcholine (POPC) and with 1-palmitoyl-2-docoshexaenoylphosphatidylethanolamine (PDPE) or 1-palmitoyl-oleoylphosphatidylethanolamine (POPE). PSM and cholesterol are raft forming lipids that pack together tightly. PDPC and PDPE, which have polyunsaturated docosahexaenoic acid (DHA) at the sn-2 position, prefer a disordered non-raft environment. After 18 µs of simulation, visual inspection confirms that PSM and cholesterol cluster together more in the presence of PDPC than POPC. We attribute the increase in clustering to the greater difference in order parameter measured for the polyunsaturated phospholipid relative to PSM. The clustering of PSM and cholesterol appears less for PDPE and POPE, reflecting a smaller differential in order between PE and PSM that we ascribe to the smaller headgroup of PE and resulting intrinsically higher order.

Tools for Understanding and Predicting the Affinity of Per- and Polyfluoroalkyl Substances for Anion-Exchange Sorbents.

Anion-exchange (AE) sorbents are gaining in popularity for the remediation of anionic per- and polyfluoroalkyl substances (PFAS) in water. However, it is unclear how hydrophobic and electrostatic interactions contribute to anionic PFAS retention. The goal of this study was to understand the effects of PFAS chain length and head group on electrostatic interactions between PFAS and an aminopropyl AE phase. Liquid chromatography-mass spectrometry (LC-MS) was used with an aminopropyl AE guard column to find relative retention times. The average electrostatic potential (EPavg) of each PFAS was calculated, which correlated positively with the PFAS chromatographic retention time, demonstrating the value of EPavg as a proxy for predicting electrostatic interactions between PFAS and the aminopropyl AE phase. The order of greatest to lowest PFAS AE affinity for an aminopropyl column based on chromatographic retention times and electrostatic interactions was n:3 fluorotelomer carboxylic acids (n:3 FtAs) > n:2 fluorotelomer carboxylic acids (n:2 FtAs) > perfluoroalkyl carboxylates (PFCAs) > perfluoroalkyl sulfonamides (FASAs) ∼ n:2 fluorotelomer sulfonates (n:2 FtSs) > perfluoroalkyl sulfonates (PFSAs). This study introduces a methodology for qualitatively characterizing electrostatic interactions between PFAS and AE phases and highlights that electrostatic interactions alone cannot explain the affinity of PFAS for AE resins in water treatment/remediation scenarios.

Polysaccharide and monosaccharide guided liver delivery of Sorafenib Tosylate – A nano-strategic approach and comparative assessment of hepatospecificity

Hepatospecific delivery by ligand based receptor targeting is an established strategy to augment therapy associated with liver diseases and disorders. Previously, we have investigated the effect of ligand headgroup on cellular uptake mediated by the asialoglycoprotein receptor by in silico and in vitro approach. In this paper, we report the design of agarose based liposomes for delivery to liver cancer cells and provide a proof of concept of the targeting efficiency against galactose liposomes using an in vivo approach. Sorafenib Tosylate loaded targeting liposomes were developed and optimized using factorial design. Comparative evaluation including cell cytotoxicity, pharmacokinetics and biodistribution and hepatospecific uptake was performed for both the liposomal systems. The formulations possessed a particle size of 150 – 180 nm and a zeta potential of 30 - 60 mV depending on the amount of ligand and drug loading, with more than 90% entrapment efficiency. A two-fold increase in cytotoxicity was observed with agarose-based liposomes as compared to galactose based liposomes. In vivo PK evaluation indicated a reduction in half life of drug when loaded in agarose ligand loaded system, probably due to greater uptake in the liver as evidenced in biodistribution study. Intrahepatic disposition revealed a higher PC/NPC uptake ratio with the targeted systems as compared to conventional liposomes, although the agarose-based system resulted in highest uptake ratio. A biocompatible platform for specific delivery of drugs to hepatocytes was established validating a rational approach to design liver targeting systems.

Lipid-Mediated Association of the Slg1 Transmembrane Domains in Yeast Plasma Membranes.

Clustering of transmembrane proteins underlies a multitude of fundamental biological processes at the plasma membrane (PM) such as receptor activation, lateral domain formation, and mechanotransduction. The self-association of the respective transmembrane domains (TMDs) has also been suggested to be responsible for the micron-scaled patterns seen for integral membrane proteins in the budding yeast PM. However, the underlying interplay between the local lipid composition and the TMD identity is still not mechanistically understood. In this work, we combined coarse-grained molecular dynamics simulations of simplified bilayer systems with high-resolution live-cell microscopy to analyze the distribution of a representative helical yeast TMD from the PM sensor Slg1 within different lipid environments. In our simulations, we specifically evaluated the effects of acyl chain saturation and anionic lipid head groups on the association of two TMDs. We found that weak lipid-protein interactions significantly affect the configuration of TMD dimers and the free energy of association. Increased amounts of unsaturated phospholipids (PLs) strongly reduced the helix-helix interaction, while the presence of anionic phosphatidylserine (PS) hardly affected the dimer formation. We could experimentally confirm this surprising lack of effect of PS using the network factor, a mesoscopic measure of PM pattern formation in yeast cells. Simulations also showed that the formation of TMD dimers in turn increased the order parameter of the surrounding lipids and induced long-range perturbations in lipid organization. In summary, our results shed new light on the mechanisms of lipid-mediated dimerization of TMDs in complex lipid mixtures.

Effect of amine head group imparted to poly (glycidyl methacrylate) grafted fibrous adsorbent for CO2 adsorption

Abstract The demand to develop adsorbents for CO2 capture with high performance continued to grow extensively. Adsorbents with covalently bonded amine groups based on fibrous substrate modified by radiation-induced grafting copolymerization (RIGC) of glycidyl methacrylate (GMA) and amination treatment have emerged recently. In this study, GMA was grafted onto a polyethylene/polypropylene (PE/PP) fibrous sheet and the grafted intermediate was used to incorporate two different amine-containing agents, namely polyethyleneimine (PEI) and ethylenediamine (EDA) for CO2 adsorption. The chemical structural and morphological changes in the two aminated adsorbents were evaluated using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. A low and equal amination level of 20% was achieved in PEI-containing and EDA-containing adsorbents. The CO2 adsorption from a binary mixture of CO2/N2 (40:60 v/v) was not satisfactory despite a 30% higher adsorption capacity (50.44 mg/g) demonstrated by EDA-containing adsorbent compared to 34.51 mg/g for PEI-containing counterpart at 30 bar and at room temperature. More work is needed to elevate the CO2 adsorption capacity levels in such adsorbents by increasing the amination level via optimization of reaction parameters.

Studies on the effect of long‐chain and head groups of nonionic surfactants synthesized from palm and coconut oil on the formation of silver nanoparticles

AbstractFour fatty amides were synthesized using coconut and palm oil sources. The chemical structure of the as‐prepared fatty acids was confirmed using Fourier Transform Infrared (FT‐IR) and 1H, 13C NMR spectroscopy. The effect of different chain lengths and head groups of these compounds on Ag nanoparticles (NPs) synthesis was investigated. Ultraviolet–visible spectroscopic studies showed characteristic absorbance peaks (λmax ≈ 410 nm). FT‐IR results indicated that the surfactant functionalities are responsible for the Ag NPs stability. The effect of fatty amides on the morphology and size distribution of the Ag NPs was investigated using transmission electron microscope (TEM). The TEM micrographs showed the formation of fine spherical morphology due to surfactant‐mediated self‐assembly with an average particle size of 1–3 nm. Dynamic light scattering (DLS) analysis showed the micellar self‐assembly of Ag NPs‐fatty amides. The effect of surfactant on the solution behavior was analyzed using surface tension measurements. Cocamide and palm DEA showed relatively low free energy (∆Gmic) values, resulting in smaller particles with good distribution. Finally, the Ag NPs showed outstanding antimicrobial activity against Pseudomonas putida bacteria.

Effect of Head Groups in Self-Assembled Monolayer Passivation on Properties of InSnZnO Thin-Film Transistors

Effect of Head Groups in Self-Assembled Monolayer Passivation on Properties of InSnZnO Thin-Film Transistors

Phosphonodithioester-Amine Coupling as a Key Reaction Step for the Design of Cationic Amphiphiles Used for Gene Delivery.

A convergent synthesis of cationic amphiphilic compounds is reported here with the use of the phosphonodithioester–amine coupling (PAC) reaction. This versatile reaction occurs at room temperature without any catalyst, allowing binding of the lipid moiety to a polar head group. This strategy is illustrated with the use of two lipid units featuring either two oleyl chains or two-branched saturated lipid chains. The final cationic amphiphiles were evaluated as carriers for plasmid DNA delivery in four cell lines (A549, Calu3, CFBE and 16HBE) and were compared to standards (BSV36 and KLN47). These new amphiphilic derivatives, which were formulated with DOPE or DOPE-cholesterol as helper lipids, feature high transfection efficacies when associated with DOPE. The highest transfection efficacies were observed in the four cell lines at low charge ratios (CR = 0.7, 1 or 2). At these CRs, no toxic effects were detected. Altogether, this new synthesis scheme using the PAC reaction opens up new possibilities for investigating the effects of lipid or polar head groups on transfection efficacies.

Molecular dynamics study of “quasi-gemini” surfactant at n-decane/water interface: The synergistic effect of hydrophilic headgroups and hydrophobic tails of surfactants on the interface properties

Chemical enhanced oil recovery (EOR), especially surfactant injection, has recently received a great deal of attention. Proper selection of the surfactant can lead to a high recovery from an oil reservoir by alternating the wettability and reducing interfacial tension. It is important to understand how the efficiency in reducing the interfacial tension is related to the structure of a surfactant. In this work, the aggregation behavior and the interfacial performance of a series of "quasi-gemini" nonylphenol-substituted dodecyl sulfonate surfactants denoted as n-C12S(NP) (n = 1, 2, 3, 4) at n-decane/water interface are explored in detail by employing the all-atomic molecular dynamics simulation. The influence of the substitution position of benzene ring on the interfacial performance is investigated by analyzing the interaction between headgroup and water and the interaction between the alkyl tails and n-decane. The interaction between headgroup and water and the interaction between the alkyl tails and n-decane are investigated by analyzing the density profiles, the radial distribution function, coordination number, the number of hydrogen bonds and the interface thickness. Simulation results suggest that a subtle structural variation in the headgroup and tails results in significant effects on limiting interface tensions at the fixed coverage: the interface properties of 3-C12S(NP) and 4-C12S(NP) are significantly better than those of 1-C12S(NP) and 2-C12S(NP). 3-C12S(NP) leads to the lowest interface tension and the largest interface formation energy by having the strongest interaction with water and decane. The results are useful for designing high performance surfactants for oil displacement.

Highly conductive and alkaline stable partially fluorinated anion exchange membranes for alkaline fuel cells: Effect of ammonium head groups

The effect of ammonium structure on partially fluorinated anion exchange membranes was investigated for alkaline fuel cell applications. Precursor copolymers tethered with bromopropyl side chains (PAF-C3-Br) were successfully synthesized and quaternized quantitatively with amines to obtain a series of QPAF-C3-XY membranes containing various ammonium head groups. The head groups (XY) included dimethylbutyl (DMB), dimethylhexyl (DMH), dibutylmethyl (DB), and heterocyclic N-methylpiperidinium (Pip). All of the membranes exhibited well-developed phase-separated morphology regardless of the size of the head groups as confirmed by TEM images. DFT calculations suggested that the hydrophilic domain sizes (determined from TEM images) were dependent on the polar surface area (PSA) rather than the molecular volume of the head groups. Among the membranes, QPAF-C3-Pip possessed the most balanced properties of high conductivity, low water absorbability, reasonable mechanical strength, and alkaline stability. QPAF-C3-Pip membrane (IEC = 1.26 meq/g) achieved 232 mW/m2 of the maximum power density in alkaline fuel cell, which was slightly higher than that of our previous QPAF-C3-TMA with typical trimethyl ammonium head groups (224 mW/cm2). In the durability test for 240 h, the voltage decreased from 0.74 V to 0.43 V with average decay of 1.29 mV/h. The post-durability NMR analysis revealed that the majority of the voltage loss was related to the catalyst layers.

Formation and superlattice of long-range and highly ordered alicyclic selenolate monolayers on Au(1 1 1) studied by scanning tunneling microscopy

The formation and surface structures of cyclohexanethiolate (CYH-S) and cyclohexaneselenolate (CYH-Se) self-assembled monolayers (SAMs) on Au(111) were probed to understand headgroup effects on the formation of SAMs with an alicyclic backbone using scanning tunneling microscopy (STM). CYH-S SAMs on Au(111) formed via solution deposition at room temperature (RT) were composed of small ordered domains with sizes ranging from 10 to 30 nm, whereas CYH-Se SAMs on Au(111) usually had a disordered phase. The molecular arrangements of CYH-S SAMs on Au(111) could be described as a (5 × 2√3)R30° structure. CYH-Se SAMs formed via vapor deposition at RT had a long-range ordered phase (greater than 100 nm) including missing rows and molecular defects. A highly ordered crystalline phase of CYH-Se SAMs on Au(111) with fewer structural defects was formed at 323 K for 12 h that was assigned to a (√3.5 × 2√10)R27° structure. STM observations revealed that the domain formation and surface structures of CYH-Se SAMs on Au(111) were completely different from those of CYH-S SAMs. Furthermore, we found that CYH-S and CYH-Se SAM can be utilized for bonding-induced work function modification of Au substrate through Kelvin probe force microscopy measurement.

The effect of head group of surfactant on the adsorption of methyl red onto modified coffee residues

The effect of the head group structure of surfactant on the adsorption of methyl red (MR) onto modified coffee residues (MCRs) has been investigated. The coffee residue (CR) was modified by a cationic surfactant, namely Dodecyltrimethyl ammonium bromide (DTAB) and a zwitterionic surfactant, namely N, N-Dimethyldodecylamine N-oxide (DDAO). The CR and MCRs (DTAB–CR and DDAO–CR) were characterized by using SEM, EDX, BET and FTIR analysis. The effect of pH, contact time and initial MR concentration on the adsorption process was studied. Langmuir and Freundlich isotherm models were used to evaluate the experimental data. Adsorption equilibrium data were fitted to Langmuir isotherm, and the maximum adsorption capacities with DTAB–CR and DDAO–CR was 66.66 and 76.72 mg/g, respectively. On the other hand, the results of kinetic studies showed that the data were in maximum agreement with the pseudo-second-order kinetic model. Based on the experimental data and the proposed adsorption mechanism, it was concluded that zwitterionic surfactant is the most efficient for the adsorption of MR.