Evaluation of adsorption characteristics of new-generation CNT-based adsorbents: characterization, modeling, mechanism, and equilibrium study

Kocaman Suheyla

doi:10.1007/s42823-023-00468-5

Evaluation of adsorption characteristics of new-generation CNT-based adsorbents: characterization, modeling, mechanism, and equilibrium study

Carbon Letters
Abbr : Carbon Lett.
2023, 33(3), pp.883-897
DOI : 10.1007/s42823-023-00468-5
Publisher : Korean Carbon Society
Research Area : Natural Science > Natural Science General > Other Natural Sciences General
Received : October 4, 2022
Accepted : January 13, 2023
Published : May 1, 2023

Kocaman Suheyla ¹

¹Department of Chemical Engineering, Faculty of Engineering and Natural Science, Konya Technical University

Accredited

ABSTRACT

In this study, superior carbon nanotubes (CNT) were chemically modified with itaconic acid (IA) and a polyaniline (PANI) composite was formed and used to remove methylene blue (MB) dye from an aqueous solution. The capacity of CNTs modified with IA (IA/CNT) and composited with PANI (PANI/CNT) to remove MB dye from an aqueous solution was compared and investigated. The effects of parameters such as pH (3–10), adsorbent dose (0.8–8 g/L), initial dye concentration (10–100 mg/L), and temperature (25–55 °C) on MB adsorption were investigated. IA/CNT and PANI/CNT adsorbents were characterized by analyzes such as Fourier Transform Infrared Spectroscopy (FT-IR), Field Emission Scanning Electron Microscopy (FE-SEM), transmission electron microscope (TEM), and Brunauer, Emmett and Teller (BET). It was determined that the isotherm data fit the Langmuir isotherm model. The maximum adsorption capacity (qmax) of PANI/CNT and IA/CNT calculated according to this model (at 25 °C) was 12.78 and 32.78 mg g−1, respectively. Thermodynamic analysis results showed that the adsorption was exothermic, feasible, and spontaneous. It can be said that the possible mechanism of MB on PANI/CNT and IA/CNT adsorbents occurs with the participation of π–π interaction, electrostatic attraction and hydrogen bonding.

KEYWORDS

CNT-based adsorbents PANI Itaconic acid Adsorption Methyelene blue

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Total Citation Counts(KCI+WOS) (5) This is the number of times that the duplicate count has been removed by comparing the citation list of WoS and KCI.

Scopus Citation Counts (7) This is the result of checking the information with the same ISSN, publication year, volume, and start page between articles in KCI and the SCOPUS journals. (as of 2024-10-01)

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Carbon Letters 2023 KCI Impact Factor : 1.35 KCI-WoS Impact Factor : 6.04

Evaluation of adsorption characteristics of new-generation CNT-based adsorbents: characterization, modeling, mechanism, and equilibrium study

ABSTRACT

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This is the result of checking the information with the same ISSN, publication year, volume, and start page between the WoS and the KCI journals. (as of 2024-07-26)

Total Citation Counts(KCI+WOS) (5) This is the number of times that the duplicate count has been removed by comparing the citation list of WoS and KCI.

Scopus Citation Counts (7) This is the result of checking the information with the same ISSN, publication year, volume, and start page between articles in KCI and the SCOPUS journals. (as of 2024-10-01)

* References for papers published after 2023 are currently being built.

Carbon Letters 2023 KCI Impact Factor : 1.35 KCI-WoS Impact Factor : 6.04

Evaluation of adsorption characteristics of new-generation CNT-based adsorbents: characterization, modeling, mechanism, and equilibrium study

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WoS Citation Counts (5) This is the result of checking the information with the same ISSN, publication year, volume, and start page between the WoS and the KCI journals. (as of 2024-07-26)

Total Citation Counts(KCI+WOS) (5) This is the number of times that the duplicate count has been removed by comparing the citation list of WoS and KCI.

Scopus Citation Counts (7) This is the result of checking the information with the same ISSN, publication year, volume, and start page between articles in KCI and the SCOPUS journals. (as of 2024-10-01)

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