Selective dye adsorption by pH modulation on chemically modified nanopolyaniline by <i>N</i>-grafting of maleic acid

Rath, Sai Sushree; Mohanty, Nehapadma; Patra, Braja N.

doi:10.1039/d3py00968h

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2024

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Cited by 2 publications

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Improved Adsorption of Organic Dyes onto a Polypyrrole/Tannic Acid Nanocomposite

Mohanty,

Rath,

Patra

2024

Langmuir

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Methyl orange (MO) and methylene blue (MB) dyes are toxic and carcinogenic; thus, their presence in water bodies has been a major concern. Designing an efficient adsorbent for removal of these dyes is a scientific challenge for researchers. In this work, a polypyrrole−tannic acid nanocomposite was prepared via a chemical oxidation method and used as a novel adsorbent for removing these toxic dyes. The synthesized nanocomposite was characterized by transmission electron microscopy, scanning electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, and Brunauer−Emmett−Teller methods. The effect of different parameters on adsorption such as adsorbent doses, temperature, pH, initial dye concentration, and contact time was studied. The adsorption was in line with pseudo-second-order kinetics and the Langmuir isotherm model. ΔG°, ΔH°, and ΔS°were calculated to ascertain the feasibility of adsorption. The maximum adsorption capacities attained for this adsorbent were found to be 204.08 mg/g toward the MO dye and 217.39 mg/g toward the MB dye.

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Improved Adsorption of Organic Dyes onto a Polypyrrole/Tannic Acid Nanocomposite

Mohanty,

Rath,

Patra

2024

Langmuir

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In-Situ Growth of Hydrophobic Zinc Succinate Interphase with High Ionic Conductivity Toward Stable Zinc Anodes

Lin,

Yu,

et al. 2024

Preprint

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Selective dye adsorption by pH modulation on chemically modified nanopolyaniline by N-grafting of maleic acid

Abstract: Polyaniline grafted maleic acid was synthesized via the ring opening reaction of maleic anhydride using polyaniline as a nucleophile. The polymer was used for selective removal of cationic (pH > 6.8) and anionic (pH < 6.8) dyes at different pH values.

Cited by 2 publications

References 66 publications

Improved Adsorption of Organic Dyes onto a Polypyrrole/Tannic Acid Nanocomposite

Improved Adsorption of Organic Dyes onto a Polypyrrole/Tannic Acid Nanocomposite

In-Situ Growth of Hydrophobic Zinc Succinate Interphase with High Ionic Conductivity Toward Stable Zinc Anodes

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