Polyaniline coated tungsten trioxide as an effective adsorbent for the removal of orange G dye from aqueous media

Hsini, Abdelghani; Naciri, Yassine; Bouzıanı, Asmae; Aarab, Nouh; Essekri, Abdelilah; Imgharn, Abdelaziz; Laabd, Mohamed; Navı́o, J.A.; Puga, F.; Lakhmiri, Rajae; Albourine, Abdallah

doi:10.1039/d1ra04135e

Cited by 37 publications

(8 citation statements)

References 52 publications

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“…The commercial activated carbon is commonly utilized as an effective adsorbent in the adsorption process but researches are still carried out for organic or inorganic cheap and effective alternatives due to its high production and regeneration costs ( Arellano-Cardenas et al, 2013 ; Abidi et al, 2015 ). Recently developed polymeric ( Naciri et al, 2022 ) and metallic composites ( Tanji et al, 2021 ) have been proposed as effective alternatives for the adsorption ( Imgharn et al, 2022 ) or photocatalytic degradation ( Fahoul et al, 2022 ) of metal ions ( Imgharn et al, 2023 ), dyes ( Hsini et al, 2021 ), and other organic pollutants. However, clay minerals have been mostly used to remove dyes from aqueous solutions ( Bhattacharyya et al, 2014 ) since their properties such as non-toxicity, naturally abundancy, low-cost, high surface area, and porosity ( Gürses et al, 2009 ).…”

Section: Introductionmentioning

confidence: 99%

Adsorption of textile dyes from aqueous solutions onto clay: Kinetic modelling and equilibrium isotherm analysis

et al. 2023

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The commercial activated carbon commonly uses to reduce of dye amount in the textile industry effluents. In this study has focused on the use of a natural clay sample as low cost but potential adsorbent. For this purpose the adsorption of commercial textile dyes, Astrazon Red FBL and Astrazon Blue FGRL, onto clay was investigated. The physicochemical and topographic characteristics of natural clay sample were determined by scanning electron microscopy (SEM), X-Ray fluorescence spectrometry (XRF), X-Ray diffraction (XRD), thermogravimetric analysis (TGA), and cation exchange capacity measurements. It was determined that the major clay mineral was smectite with partial impurities. The effects of several operational parameters such as contact time, initial dye concentration, temperature, and adsorbent dosage on the adsorption process were evaluated. The adsorption kinetics was interpreted with pseudo-first order, pseudo-second order, and intra-particle diffusion models. The equilibrium adsorption data were analyzed using Langmuir, Freundlich, Redlich-Peterson, and Temkin isotherm models. It was determined that the adsorption equilibrium was reached in the first 60 min for each dye. The amount of adsorbed dyes onto clay decreased with increasing temperature, similarly, it decreased with increasing sorbent dosage. The kinetic data were well described by pseudo-second order kinetic model, and adsorption equilibrium data was followed both Langmuir and Redlich-Peterson models for each dyes. The adsorption enthalpy and entropy values were calculated as −10.7 kJ.mol−1 and −13.21 J.mol−1.K−1 for astrazon red and those for astrazon blue −11.65 kJ.mol−1 and 37.4 J.mol−1.K−1, respectively. The experimental results support that the physical interactions between clay particles and dye molecules have an important role for the spontaneous adsorption of textile dyes onto the clay. This study revealed that clay could effectively be used as an alternative adsorbent with high removal percentages of astrazon red and astrazon blue.

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Section: Introductionmentioning

confidence: 99%

Adsorption of textile dyes from aqueous solutions onto clay: Kinetic modelling and equilibrium isotherm analysis

et al. 2023

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“…The ideal peaks of synthesized PANI are confirmed by the XRD patterns [23,24]. The 2θ peaks of the monoclinic structure [25] of NTO sample are observed at 23.30°, 23.75°, 24.45°, 26.70°, 28.90°, 38.35°, 34.24°, 35.63°, 42.96°, 50.05°, and 55.98°, corresponding to the planes (002), (020), ( 200), ( 120), ( 111), ( 202), ( 222), ( 130), (040), and (440), respectively [26][27][28]. All nanocomposites contain the 2θ peaks of PANI and NTO that are confirmed by XRD results.…”

Section: Xrd Analysismentioning

confidence: 99%

Optimised and percolated nanocomposite of polyaniline/tungstic anhydride modified electrode implemented in Vanadium redox flow battery

Vellakkat,

Mohan

et al. 2024

Phys. Scr.

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In order to make vanadium redox flow batteries (VRFB) economically viable on a large scale, it is crucial to create graphite-based electrode nanomaterials with an excellent performance. In this research work, we synthesized the various percentage nanocomposites of polyaniline (PANI)/nano-tungsten oxide (NTO) by in-situ chemical oxidative polymerization method. The impact of crystal phases, elements present in nanocomposites, thermal stability, surface analysis, and morphological factors were studied. We investigated electrochemical behavior such as cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and Tafel studies for PANI and NTO and prepared nanocomposites (NPATO) with different proportions sprayed over graphite felt (GF). Characterization analysis was used to examine the impact of various NTO loading concentrations on the PANI, and an ideal best percolated sample NPATO20/GF (3 mg/cm2) was inserted as a positive electrode in the cell stack to examine the charge-discharge cycles. At 60 mA/cm2 current density, their coulombic (ղC), voltaic (ղV), and energy (ղE) efficiencies are outstanding. It has been proven that this work creates an affordable and efficient method for the forthcoming VRFBs.

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“…Later, the adsorption of the dyes reached an equilibrium due to the gradual exhaustion of adsorbent active sites. In the case of MO (Figure e) and BG (Figure f) dye uptake, it was observed that the percent removal efficiency of MO and BG was very quick and reached more than 93% in just 20 min, which could be probably attributed to a substantial amount of dyes’ concentration at the solution/Pani@ASG interface . The maximum removal of 94.2 and 100% was observed for MO and BG dyes, respectively.…”

Section: Dye Adsorption Studiesmentioning

confidence: 99%

“…Among these π-conducting polymers, polyaniline (Pani) has been widely applied by researchers in various fields . The demand for “Pani” by many scientists was attracted due to its peculiar features, such as the redox property, low cost, ease of processing, biodegradability, and presence of active amine/imine groups in the polymeric chains toward wastewater treatment. − In addition, the science of acid/base doping/dedoping of Pani to tune its conducting nature makes it unique from other conducting polymers. Despite these characteristics, the bare Pani shows low adsorption capacity due to its crystalline behavior in the polymeric chain.…”

Section: Introductionmentioning

confidence: 99%

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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Polyaniline coated tungsten trioxide as an effective adsorbent for the removal of orange G dye from aqueous media

Abstract: In this work, the core–shell PANI@WO3 composite was obtained from the reaction of aniline monomer polymerization with WO3 particles; sodium persulfate was used as an oxidant.

Cited by 37 publications

References 52 publications

Adsorption of textile dyes from aqueous solutions onto clay: Kinetic modelling and equilibrium isotherm analysis

Adsorption of textile dyes from aqueous solutions onto clay: Kinetic modelling and equilibrium isotherm analysis

Optimised and percolated nanocomposite of polyaniline/tungstic anhydride modified electrode implemented in Vanadium redox flow battery

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

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