Facile synthesis and characterization of polypyrrole - iron oxide – seaweed (PPy-Fe3O4-SW) nanocomposite and its exploration for adsorptive removal of Pb(II) from heavy metal bearing water

Sarojini, G.; Venkateshbabu, Samikannu; Rajasimman, M.

doi:10.1016/j.chemosphere.2021.130400

Cited by 80 publications

(14 citation statements)

References 74 publications

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“…The polypyrrole biocomposite was prepared by using pyrrole, methanol, and ferric chloride hexahydrate (FeCl 3 ·6H 2 O) chemical reagents. Ferric chloride hexahydrate is used as an efficient oxidant for the conversion of pyrrole to polypyrrole 32 and Fe( iii ) is used to impart magnetic properties in the polypyrrole modified biocomposite (Ppy/BB). As mentioned in Fig.…”

Section: Materials and Synthetic Methodologiesmentioning

confidence: 99%

Conversion of Phaseolus vulgaris into chemically functionalized biocomposites for efficient methylene blue removal: kinetics, isothermal, and thermodynamics analysis

Saeed¹,

Kamran²,

Khan³

et al. 2023

New J. Chem.

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Section: Materials and Synthetic Methodologiesmentioning

confidence: 99%

Conversion of Phaseolus vulgaris into chemically functionalized biocomposites for efficient methylene blue removal: kinetics, isothermal, and thermodynamics analysis

Saeed¹,

Kamran²,

Khan³

et al. 2023

New J. Chem.

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“…Then, we removed LC/PPy, which was then placed into a receptacle that contained 10 mL of the chosen eluent. After waiting 50 (180) min for the interaction with NaOH (SDS), we measured the absorbance of the solution at 428 nm and estimated the capacity of desorption as 34, 35

Desorption (%) = \frac{desorbed mass}{adsorbed mass} \times 100

…”

Section: Methodsmentioning

confidence: 99%

Use of a Luffa cylindrica/polypyrrole composite for removing dyes from aqueous media

Aguiar

Leal

Silva

et al. 2023

Polymer International

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We report the preparation of a Luffa cylindrica/polypyrrole (LC/PPy) composite and its use for the removal of tartrazine dye (E102) from aqueous media. By use of Fourier transform infrared (FTIR) and energy‐dispersive X‐ray (EDX) spectroscopies, X‐ray diffraction (XRD) and scanning electron microscopy (SEM), we were able to confirm that the PPy chains thoroughly coat the LC matrix, with the composite presenting both amorphous and crystalline phases such as pristine LC. We examined the effects of varying parameters, such as the times allotted for the polymerization and the dye–adsorbent interaction, the E102 initial concentration and the temperature and pH of the solution, on the removal capacity (qe) of the composite. The largest adsorption rate was exhibited by the composite resulting from a 30 min polymerization. At 298 K, the highest value of qe (374.2 mg g−1) occurred at pH 2.0, after 360 min of interaction. The adsorption process occurs spontaneously and is favored by an increase in temperature, with qe = 672.4 mg g−1 at 313 K. We determined that the composite could be used in at least five consecutive adsorption–desorption cycles without noticeable losses of properties. Preliminary experiments indicate that good results were also obtained for the removal of the dyes Remazol Black B, methylene blue and toluidine blue. Overall, these results suggest that the LC/PPy composite is a promising material for use in protocols of removal of dyes from aqueous media. © 2023 Society of Industrial Chemistry.

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“…Freundlich adsorption isotherm is appropriate for asymmetrical interface and multimolecular layer adsorption. Langmuir adsorption isotherm abides by the hypothesis of rhythm and uniformity of the adsorbent and combines with unilaminar adsorption onto an interface of numerous blank spots (Sarojini et al 2021). The linear and nonlinear forms of them, R L (represents the applicability of the Langmuir isotherm), are shown in Eq.…”

Section: Adsorption Isotherm Studymentioning

confidence: 99%

“…But the last adsorption capacity of both was more than 50 percent of the initial capacity, and they account for 52.94% and 55.48% of the initial adsorption capacity, respectively. One reason for this phenomenon was likely to be the imperfect desorption of Cr( ) ions (Sarojini et al 2021). Of course, the loss of mass was another factor.…”

Section: Adsorption-desorption Studymentioning

confidence: 99%

Adsorption and reduction from modified polypyrrole enhance electrokinetic remediation of hexavalent chromium-contaminated soil

Wang

Zheng

et al. 2022

Environ Sci Pollut Res

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Heavy metal pollutant Cr( ) in the environment will pose a severe threat to animal and human health. In this work, Fe 3 O 4 @PPy, Arg@PPy, and Arg/Fe 3 O 4 @PPy were prepared to enhance adsorption of Cr( ) by doping Fe 3 O 4 nanoparticles and amino radicals into the original PPy structure. Their characteristics were investigated by FTIR, SEM, EDS, BET analysis, and batch adsorption experiments. And they were used as permeable reaction barriers (PRB) to combine with electrokinetic remediation (EKR) to remediate Crcontaminated soil. Adsorption experiment results showed that the maximum adsorption capacities of PPy, Fe 3 O 4 @PPy, Arg@PPy, and Arg/Fe 3 O 4 @PPy for Cr( ) were 60.43 mg/g, 67.12 mg/g, 159.86 mg/g, and 141.50 mg/g, respectively. All of them followed the kinetic pseudo-second-order model and the Langmuir isothermal model with a monolayer adsorption behavior. In EKR/PRB system, the presence of Fe 3 O 4 @PPy, Arg@PPy, and Arg/Fe 3 O 4 @PPy obtained the higher Cr( ) removal e ciency near the anode than that of the PPy, increasing by 74.60%, 26.04%, 68.64%, respectively. A strong electrostatic attraction between anion contaminants and protonated modi ed PPy and a reduction from Cr( ) to Cr( ) appeared in the EKR remediation process under acid conditions. This study opened up a prospect for applying modi ed PPy composites to treat heavy metal contaminated soil.

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Facile synthesis and characterization of polypyrrole - iron oxide – seaweed (PPy-Fe3O4-SW) nanocomposite and its exploration for adsorptive removal of Pb(II) from heavy metal bearing water

Cited by 80 publications

References 74 publications

Conversion of Phaseolus vulgaris into chemically functionalized biocomposites for efficient methylene blue removal: kinetics, isothermal, and thermodynamics analysis

Conversion of Phaseolus vulgaris into chemically functionalized biocomposites for efficient methylene blue removal: kinetics, isothermal, and thermodynamics analysis

Use of a Luffa cylindrica/polypyrrole composite for removing dyes from aqueous media

Adsorption and reduction from modified polypyrrole enhance electrokinetic remediation of hexavalent chromium-contaminated soil

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