The novel polyindole based ZnO/MgO nanocomposite adsorbent for the removal of heavy metal ions from industrial effluents

Devadathan, Dedhila; Baiju, V.; Deepa, J.P.; Raveendran, R.

doi:10.17586/2220-8054-2020-11-6-666-671

Cited by 3 publications

(5 citation statements)

References 7 publications

(7 reference statements)

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“…Similarly, Cai, Z. et al [ 13 , 14 ] prepared surface-functionalized PIN nanofibers for effective removal of Cr(VI), Pb(II), and Cd(II) from aqueous solutions. Besides, polyacrylonitrile/PIN composite and zinc oxide/magnesium oxide/PIN have been used for Cu(II) and Pb(II), respectively [ 15 , 16 ]. However, literature reveals no study on the usage of PIN and its composites for the removal of dye from water.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of a Novel Activated Carbon@Polyindole Composite for the Effective Removal of Ionic Dye from Water

et al. 2021

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The present study is aimed at the synthesis and exploring the efficiency of a novel activated carbon incorporated polyindole (AC@PIN) composite for adsorptive removal of Malachite Green (MG) dye from aqueous solution. An AC@PIN hybrid material was prepared by in situ chemical oxidative polymerization. The physico-chemical characteristics of the AC@PIN composite were assessed using Fourier-transform infrared spectrometer, X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectroscopy, ultraviolet visible spectroscopy, and determination of point of zero charge (pHPZC). A series of adsorption studies was conducted to evaluate the influence of operational parameters such as pH, contact time, initial dye concentration, AC@PIN dosage, and temperature on dye adsorption behavior of developed composite. A maximum dye removal percentage (97.3%) was achieved at the pH = 10, AC@PIN dosage = 6.0 mg, initial dye concentration 150 mg L−1, and temperature = 20 °C. The kinetic studies demonstrated that the adsorption of MG on AC@PIN followed pseudo-second-order model (R2 ≥ 0.99). Meanwhile, Langmuir isotherm model was founded to be the best isotherm model to describe the adsorption process. Finally, the recyclability test revealed that the composite exhibits good recycle efficiency and is stable after 5 cycles. The obtained results suggest that AC@PIN composite could be a potential candidate for the removal of MG from wastewater.

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Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of a Novel Activated Carbon@Polyindole Composite for the Effective Removal of Ionic Dye from Water

et al. 2021

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“…Among the CPs, PPY and PIN can function as efficient pollutant adsorbers due to their unique structure, which can comprise both amine and imine functional groups. 187,188 The lone pairs of electrons on nitrogen atoms can facilitate the chelation and adsorption of pollutants.…”

Section: Materials Advances Reviewmentioning

confidence: 99%

“…For instance, polyindole-based ZnO/MgO nanocomposite for the removal of Pb( ii ) heavy metal ion. 188 Composites offer a greater number of reaction sites available for Pb 2+ adsorption.…”

Section: Multifunctions Of Pin and Ppy And Their Nanocompositesmentioning

confidence: 99%

Polyindole and polypyrrole as a sustainable platform for environmental remediation and sensor applications

et al. 2022

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“…It can also be used in water purification applications as an adsorbent due to the presence of chelating functional groups in its structure 23 . PIn‐ZnO/MgO nanocomposites were used to remove the heavy metals from effluents 25 …”

Section: Introductionmentioning

confidence: 99%

“…23 PIn-ZnO/MgO nanocomposites were used to remove the heavy metals from effluents. 25 In this study, tBN surface was functionalized with PIn by a simple in situ polymerization process. To the best of our knowledge, this kind of BN composite has not been reported previously.…”

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confidence: 99%

Adsorption of uranium (VI) from aqueous solutions using boron nitride/polyindole composite adsorbent

Emre,

Zorer,

Bilici

et al. 2023

J of Applied Polymer Sci

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Turbostratic boron nitride (tBN) surface is modified with polyindole (PIn) by a facile polymerization technique and the uranyl adsorption efficiency of this mesoporous hybrid is investigated. The successful surface modification is confirmed by FT‐IR, Raman, XRD, TEM, SEM, EDX, EDS mapping XPS, BET, and zeta potential techniques. The batch experiments are performed in various temperatures (T), contact times (t), pH, and initial solution concentrations (C0) to evaluate its adsorption performance. The optimum adsorption performance is achieved at pH = 5.0–5.5, T = 307 K, t = 10 min, C0 = 18 mg L−1. These experimental results are evaluated using Freundlich, Redlich–Peterson, and Langmuir isotherm models, which presents equivalent regression coefficients. Maximum adsorption capacity (qm) of the nanoadsorbent (tBN/PIn), determined by the Langmuir isotherm, is 315.29 mg g−1. The adsorption kinetics of uranyl ions on tBN/PIn are in harmony with the pseudo‐second order model. tBN/PIn nanoadsorbent provides high adsorption efficiency even at exceptionally low UO22+ concentration range (4–40 mg L−1) and low adsorbent mass (0.005 g). XPS analysis results show that 0.05% of uranium is adsorbed on tBN/PIn via mainly U‐O coordination. The results of present study demonstrate that tBN/PIn can a potential adsorbent for removing uranium from aqueous solutions.

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The novel polyindole based ZnO/MgO nanocomposite adsorbent for the removal of heavy metal ions from industrial effluents

Cited by 3 publications

References 7 publications

Preparation and Characterization of a Novel Activated Carbon@Polyindole Composite for the Effective Removal of Ionic Dye from Water

Preparation and Characterization of a Novel Activated Carbon@Polyindole Composite for the Effective Removal of Ionic Dye from Water

Polyindole and polypyrrole as a sustainable platform for environmental remediation and sensor applications

Adsorption of uranium (VI) from aqueous solutions using boron nitride/polyindole composite adsorbent

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