Polyaniline coated nickel oxide nanoparticles for the removal of phenolic compounds: Equilibrium, kinetics and thermodynamic studies

Goswami, Bhanita; Mahanta, Debajyoti

doi:10.1016/j.colsurfa.2019.123843

Cited by 16 publications

(5 citation statements)

References 51 publications

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“…Phenolic compounds are important chemicals used in several industries such as synthetic resins, plants, paints, textile, plastic, pharmaceutical, petroleum, and mine discharges [ 274 , 275 , 276 ]. However, they are considered a major class of pollutants due to their high toxicity, carcinogenicity, and low biodegradability [ 277 ]. According to Khan et al the WHO has determined 1 μg/L (11 nM for phenol) as the maximum concentration allowed in drinking water [ 278 ].…”

Section: Electrochemical Sensors Based On Conducting Polymersmentioning

confidence: 99%

Electrochemical Sensors Based on Conducting Polymers for the Aqueous Detection of Biologically Relevant Molecules

et al. 2021

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Electrochemical sensors appear as low-cost, rapid, easy to use, and in situ devices for determination of diverse analytes in a liquid solution. In that context, conducting polymers are much-explored sensor building materials because of their semiconductivity, structural versatility, multiple synthetic pathways, and stability in environmental conditions. In this state-of-the-art review, synthetic processes, morphological characterization, and nanostructure formation are analyzed for relevant literature about electrochemical sensors based on conducting polymers for the determination of molecules that (i) have a fundamental role in the human body function regulation, and (ii) are considered as water emergent pollutants. Special focus is put on the different types of micro- and nanostructures generated for the polymer itself or the combination with different materials in a composite, and how the rough morphology of the conducting polymers based electrochemical sensors affect their limit of detection. Polypyrroles, polyanilines, and polythiophenes appear as the most recurrent conducting polymers for the construction of electrochemical sensors. These conducting polymers are usually built starting from bifunctional precursor monomers resulting in linear and branched polymer structures; however, opportunities for sensitivity enhancement in electrochemical sensors have been recently reported by using conjugated microporous polymers synthesized from multifunctional monomers.

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Section: Electrochemical Sensors Based On Conducting Polymersmentioning

confidence: 99%

Electrochemical Sensors Based on Conducting Polymers for the Aqueous Detection of Biologically Relevant Molecules

et al. 2021

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“…[21][22][23] In addition to toxic dyes, polyaniline coated nickel oxide nanocomposite was also used successfully for elimination of phenolic compounds from water. [24] Fe 3 O 4 coated with polyaniline and polypyrrole magnetic nanocomposites were also used as adsorbents for the sequestration of 2, 4-dichlorophenoxyacetic acid and found to be very effective. [25] However, pure Pan has not gained popularity for dye containing wastewater remediation because of deprived mechanical stability and poor dispersal capability in the solution.…”

Section: Introductionmentioning

confidence: 99%

“…Pan‐based nanocomposites also studied for the adsorption of contaminants, because of their synergistic features, extensive surface areas and superior dispersibility between polymer and filler [21–23] . In addition to toxic dyes, polyaniline coated nickel oxide nanocomposite was also used successfully for elimination of phenolic compounds from water [24] . Fe 3 O 4 coated with polyaniline and polypyrrole magnetic nanocomposites were also used as adsorbents for the sequestration of 2, 4‐dichlorophenoxyacetic acid and found to be very effective [25] .…”

Section: Introductionmentioning

confidence: 99%

Polyaniline‐Coated Magnesium Ferrite Nanocomposite: Synthesis, Characterization, Fabrication Cost Analysis and Dye Sorption Behavior with Scale‐Up Design

2023

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In this research, polyaniline‐based magnesium ferrite nanocomposite (Pan−MgF−NC) was synthesized for the sequestration of cationic brilliant green (BG) dye. The Pan−MgF−NC revealed surface area of 56.19 m2/g and pore volume of 0.056 cc/g, with 20 to 40 nm of pore diameter. The impact of numerous parameters namely, solution pH, sorbent dose, dye initial concentration, and sonication time were explored and maximum dye abatement (90.28 %) was detected at solution pH of 8.0. The dominant mechanisms for the sequestration of BG onto Pan−MgF−NC were π‐π interactions, H‐bonding, and electrostatic attraction. The sorption kinetics of experimental data well fitted to pseudo second order analysis and Langmuir isotherm was the most consistent isotherm model with maximum uptake capability of 294.12 mg/g. Response surface methodology (RSM) was exhibited that the experimental BG removal (88.70 %) and model assimilated BG removal (89.13 %) are close to each other. Investigation related to scale‐up design also studied for large volume of industrial effluent. The laboratory scale fabrication cost of Pan−MgF−NC was found to be ∼85.00 USD/kg. The BG elimination efficacy with Pan−MgF−NC decreases from 90.13 % to 81.93 % after the fifth cycle, demonstrating the strong stability and reusability of Pan−MgF−NC.

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“…25,26 Despite all these advantages, PANI suffer from water insolubility that limits its environmental applications and can be solved upon modification of PANI structure. 27,28 β-Cyclodextrin (β-CD) is a nonexpensive oligosaccharide that is derived from the breakdown of glucopyranose units in the polymer chains by hydrolysis enzymes. β-CDs have the capacity to form host−guest complexes with a wide range of molecules due to their unique structure (hydrophilic external surface and hydrophobic internal cavity), making them useful in a variety of industries, in addition to their reduced cost and increased productivity.…”

Section: Introductionmentioning

confidence: 99%

“…Polyaniline (PANI) is an interesting conducting polymer that has unique properties in terms of environmental, mechanical, and thermal stability, low cost, being nontoxic, ease of synthesis, and applicability in the adsorption of heavy metals, dyes, and pollutants from aqueous solution and wastewaters. , Despite all these advantages, PANI suffer from water insolubility that limits its environmental applications and can be solved upon modification of PANI structure. , β-Cyclodextrin (β-CD) is a nonexpensive oligosaccharide that is derived from the breakdown of glucopyranose units in the polymer chains by hydrolysis enzymes. β-CDs have the capacity to form host–guest complexes with a wide range of molecules due to their unique structure (hydrophilic external surface and hydrophobic internal cavity), making them useful in a variety of industries, in addition to their reduced cost and increased productivity.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Polyaniline@β-cyclodextrin Nanocomposite for Adsorption of Carcinogenic Phenol from Wastewater

El-Aassar

Ibrahim

Hashem

et al. 2022

ACS Appl. Bio Mater.

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We synthesized a stable, eco-friendly, and low-cost polyaniline@β-cyclodextrin (PANI@β-CD) nanocomposite via oxidative polymerization for phenol adsorption from water waste since phenol pollution is a global danger to human and animal health and the environment. The production of the composite and synergistic alteration of PANI with β-CD resulted in 66% reduction in particle size from 59 nm (PANI) to 20 nm (PANI@β-CD) as well as better phenol adsorption. Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscope (SEM), and thermogravimetric analysis (TGA) were used to analyze the produced PANI@β-CD nanocomposite. Our results show the optimum conditions for phenol adsorption: time (50 min), pH (8.0), nanosorbent dose (0.5 g), and the sorption isotherm fitted with Langmuir model; the monolayer adsorption capacity of the prepared PANI@β-CD for phenol was determined to be 8.56 mg g −1 . The average pore size, total pore volume, and surface area of PANI/ βCD nanocomposite are 15.62 nm, 0.1586 cm 3 /g, and 90.901 m 2 /g, respectively, for the pseudo second order model. Finally, modifying PANI nanoparticles with βCD allowed reusability up to four cycles with superior adsorption performance of ∼95% using (0.01 N) HNO 3 .

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Polyaniline coated nickel oxide nanoparticles for the removal of phenolic compounds: Equilibrium, kinetics and thermodynamic studies

Cited by 16 publications

References 51 publications

Electrochemical Sensors Based on Conducting Polymers for the Aqueous Detection of Biologically Relevant Molecules

Electrochemical Sensors Based on Conducting Polymers for the Aqueous Detection of Biologically Relevant Molecules

Polyaniline‐Coated Magnesium Ferrite Nanocomposite: Synthesis, Characterization, Fabrication Cost Analysis and Dye Sorption Behavior with Scale‐Up Design

Fabrication of Polyaniline@β-cyclodextrin Nanocomposite for Adsorption of Carcinogenic Phenol from Wastewater

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