Carbon Based Polymeric Nanocomposites for Dye Adsorption: Synthesis, Characterization, and Application

Khan, Moonis Ali; Govindasamy, Ramendhirran; Ahmad, Akil; Siddiqui, Masoom Raza; Alshareef, Shareefa Ahmed; Hakami, Afnan Ali Hussain; Rafatullah, Mohd

doi:10.3390/polym13030419

Cited by 31 publications

(6 citation statements)

References 44 publications

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“…However, CTS-PANI, α-CTS-PANI, α-CTS films did not perform well in removing the AO7, probably the presence of PANI and α-ketoglutaric acid prevents the absorption of AO7 by effective sites of chitosan. The CTS-PANI-GO film causes both MB and Khan et al, 2021). (Pathirana et al, 2023) (Minisy et al, 2021a) (An et al, 2020) (Katowah et al, 2021) This work…”

Section: Synergistic Effectmentioning

confidence: 83%

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Improving the Co-removal Efficiency of Dyes from Water by a Novel Four-Component Chitosan Flexible Film Containing Graphene Oxide

Salami,

Bahram,

Farhadi

et al. 2024

J Polym Environ

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In the present study, a novel four-component flexible film based on α-ketoglutaric acid, chitosan, polyaniline, and graphene oxide (α-CTS-PANI-GO) was synthesized and characterized by Scanning Electron Microscope (SEM), Fourier Transform Infrared Spectroscopy (FT-IR), and Raman spectroscopy. The simultaneous removal properties of α-CTS-PANI-GO were evaluated in the removal of cationic and anionic dyes, Methylene Blue (MB) and Acid Orange 7 (AO7). Using the Central Composite Decomposition (CCD), the effect of different variables such as pH, temperature, adsorbent dose, and time on AO7 and MB removal was studied. Various isotherm models, such as Langmuir and Freundlich, were investigated, and the processing of experimental equilibrium data confirmed the suitability and application of the Langmuir model. Analysis of experimental adsorption data using various kinetic models, such as quasi-first and second-order models, shows the applicability of the firstorder equation. The results showed that in the optimal conditions, the removal percentage was about 95% for AO7 and 80% for MB, which indicates the successful performance of the synthetic film compared to the method.

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Section: Synergistic Effectmentioning

confidence: 83%

“…In addition, the preparation of GO is easy and provides the potential for the synthesis of low-cost and large-scale productions. In a study, GO/PANI nanocomposite was used to remove brilliant green (BG)(Ali Khan et al, 2021). The adsorption of BG onto GO/PANI nanocomposite had a monolayer adsorption capacity (qm) of 142.8 mg/g.…”

Section: Introductionmentioning

confidence: 99%

Improving the Co-removal Efficiency of Dyes from Water by a Novel Four-Component Chitosan Flexible Film Containing Graphene Oxide

Salami,

Bahram,

Farhadi

et al. 2024

J Polym Environ

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“…The Δ H ° values were obtained as 10.82 (kJ/mol) and 7.43 (kJ/mol) for BG and MO dyes, respectively. Like Δ G 0 , the values for Δ H ° are lower than 40 (kJ/mol), validating the physisorption process between the dyes and polymer matrix. ,− …”

Section: Dye Adsorption Studiesmentioning

confidence: 94%

Experimental Insights into Mesoporous Polyaniline-Based Nanocomposites for Anionic and Cationic Dye Removal

Tanweer

Alam

2022

Langmuir

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This work presents the preparation of inorganic–organic hybrid nanocomposites, namely three-dimensional polyaniline (Pani)/activated silica gel (ASG) (3D Pani@ASG), their characterization, and in removing application as a potential adsorbent for cationic brilliant green (BG), crystal violet (CV), and anionic Congo red (CR), and methyl orange (MO) dyes. Pani@ASG nanocomposites have been prepared by the in situ polymerization method and characterized using various techniques such as Fourier transform infrared (FTIR), X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM) with selected area electron diffraction, thermogravimetric analysis with derivative thermogravimetry, zeta potential analyses, and Brunauer–Emmett–Teller (BET). The scanning electron microscopy (SEM) study confirms the average particle size of the Pani@ASG nanocomposite is in the range of 5 nm. FESEM, TEM, FTIR, and XRD analysis proved the successful decoration of ASG over Pani. The BET result of Pani@ASG shows a mesoporous nature with a pore diameter of less than 3 nm and a surface area of 423.90 m2 g–1. Both SEM and TEM analyses show the proportional distribution of ASG over Pani’s surface. The adsorption trend of BG and MO on the studied materials at pH 7 was found as follows: Pani@ASG > Pani > ASG. The highest sorption capacities of MO and BG on Pani@ASG were 161.29 and 136.98 mg/g (T = 298.15 K, and Pani@ASG dose: 0.04 g for MO and 0.06 g for BG), which were greater compared with bare Pani and bare ASG, respectively. The interaction mechanism behind the adsorption of BG and MO dyes onto the Pani@ASG nanocomposite includes electrostatic interaction, π–π interaction, and hydrogen bonding. The mechanistic pathway and the interactions between the targeted dyes and Pani@ASG were further studied using adsorption isotherm, adsorption kinetics, and thermodynamics.

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“…According to the Temkin model, the heat of adsorption decreases linearly with increasing surface coverage [ 25 , 26 ].

where q e is the amount of the dye adsorbed at equilibrium [mg/g], C e is the equilibrium concentration of the dye [mg/L], B constant relates to the heat of adsorption and is expressed in terms of B = RT/B T , B T is the Temkin constant [J/mol], R stands for the gas constant (8.314 J/mol K), A T Temkin isotherm equilibrium binding constant [L/mg].…”

Section: Methodsmentioning

confidence: 99%

Removal of Organic Dyes from Aqueous Solutions by Activated Carbons Prepared from Residue of Supercritical Extraction of Marigold

et al. 2022

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In the present work, we reported on the efficiency of the removal of organic dyes by adsorption on activated carbons prepared from the residue of supercritical extraction of marigold. The performance of adsorbents prepared was tested towards methyl red, methylene blue, malachite green, and crystal violet at room temperature. The effects of carbonization (500 and 700 °C) and activation (700 and 800 °C) temperatures, textural parameters, and acid-base character of the adsorbent surface on the sorption properties of the activated carbons were established. Activated carbons are characterized by low developed specific surface area, from 2 to 206 m2/g, and have a basic character of the surface (pH of carbons water extracts ranging from 10.4 to 11.2). Equilibrium adsorption isotherms were investigated. The equilibrium data were analyzed in the Langmuir, Freundlich, and Temkin models. The adsorption capacities of activated carbons studied varied from 47.62 to 102.43 mg/g towards methyl red, 53.14 to 139.72 mg/g towards methyl red, 425.46 to 622.80 towards malachite green and 155.91 to 293.75 mg/g towards crystal violet, from their water solutions. Kinetics of the adsorption of the organic dyes studied were found to be described by the pseudo-second-order model. It was proven that through the physical activation of the residue of supercritical extraction of marigold, it is possible to obtain carbonaceous materials of very high adsorption capacity towards organic pollutants.

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Carbon Based Polymeric Nanocomposites for Dye Adsorption: Synthesis, Characterization, and Application

Cited by 31 publications

References 44 publications

Improving the Co-removal Efficiency of Dyes from Water by a Novel Four-Component Chitosan Flexible Film Containing Graphene Oxide

Improving the Co-removal Efficiency of Dyes from Water by a Novel Four-Component Chitosan Flexible Film Containing Graphene Oxide

Experimental Insights into Mesoporous Polyaniline-Based Nanocomposites for Anionic and Cationic Dye Removal

Removal of Organic Dyes from Aqueous Solutions by Activated Carbons Prepared from Residue of Supercritical Extraction of Marigold

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