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Simultaneous Adsorption And Degradation Of Methylene Blue Using Magnetic Carbon Nanotubes

Magnetic multiwalled carbon nanotubes (MWCNTs-Fe3O4 nanocomposites) synthesized by solvent free direct doping method, was subjected for the removal of cationic methylene blue (MB) dyes. The functional groups, phase structure, surface morphology, surface area and thermal stability of the synthesized...

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Main Author: Lee, Ee Chia
Format: Final Year Project / Dissertation / Thesis
Published: 2020
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TP Chemical technology
Online Access:http://eprints.utar.edu.my/3706/1/1505305_FYP_report_%2D_EE_CHIA_LEE.pdf
http://eprints.utar.edu.my/3706/
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spelling my-utar-eprints.37062020-06-30T11:16:17Z Simultaneous Adsorption And Degradation Of Methylene Blue Using Magnetic Carbon Nanotubes Lee, Ee Chia TP Chemical technology Magnetic multiwalled carbon nanotubes (MWCNTs-Fe3O4 nanocomposites) synthesized by solvent free direct doping method, was subjected for the removal of cationic methylene blue (MB) dyes. The functional groups, phase structure, surface morphology, surface area and thermal stability of the synthesized nanocomposites were then characterized by various physicochemical characterizations such as Fourier transform infrared (FTIR), X-ray powder diffraction (XRD), scanning electron microscopy coupled with energy dispersive X-ray (SEM-EDX), Braunauer-Emmett-Teller (BET) and thermogravimetric analysis (TGA). FTIR analysis confirmed the presence of carboxylic groups in the acid treated MWCNTs as well as the successfully doping of Fe3O4 nanoparticles onto MWCNTs. Next, XRD and SEM-EDX analysis further supported that the synthesized nanocomposites consisted of both hexagonal graphite structure of MWCNTs and the inverse spinel structure of Fe3O4 nanoparticles. In addition, BET analysis indicated that the surface area of the synthesized MWCNTs-Fe3O4 nanocomposites increased significantly as compared to the raw and acid treated MWCNTs. TGA analysis also showed that the MWCNTs-Fe3O4 nanocomposites to possess high thermal stability. Design Expert simulation was employed to determine the effects of various process parameters in the adsorption and degradation of MB. The process parameters studied included pH (2 – 10), initial MB concentration (10 – 50 mg/L), MWCNTs-Fe3O4 nanocomposites dosage (10 – 30 mg) and H2O2 concentration (5 – 20 mmol/L). The optimum reaction condition was then acquired via the response surface methodology (RSM) associated with central composite design (CCD). Results showed that an average optimum percentage of MB degradation of 95.92 % can be achieved under the following reaction conditions: pH of 5.86, initial MB concentration of 32.22 mg/L, MWCNTs-Fe3O4 nanocomposites dosage of 27 mg and H2O2 concentration of 13.02 mmol/L. 2020 Final Year Project / Dissertation / Thesis NonPeerReviewed application/pdf http://eprints.utar.edu.my/3706/1/1505305_FYP_report_%2D_EE_CHIA_LEE.pdf Lee, Ee Chia (2020) Simultaneous Adsorption And Degradation Of Methylene Blue Using Magnetic Carbon Nanotubes. Final Year Project, UTAR. http://eprints.utar.edu.my/3706/
institution Universiti Tunku Abdul Rahman
building UTAR Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Tunku Abdul Rahman
content_source UTAR Institutional Repository
url_provider http://eprints.utar.edu.my
topic TP Chemical technology
spellingShingle TP Chemical technology
Lee, Ee Chia
Simultaneous Adsorption And Degradation Of Methylene Blue Using Magnetic Carbon Nanotubes
description Magnetic multiwalled carbon nanotubes (MWCNTs-Fe3O4 nanocomposites) synthesized by solvent free direct doping method, was subjected for the removal of cationic methylene blue (MB) dyes. The functional groups, phase structure, surface morphology, surface area and thermal stability of the synthesized nanocomposites were then characterized by various physicochemical characterizations such as Fourier transform infrared (FTIR), X-ray powder diffraction (XRD), scanning electron microscopy coupled with energy dispersive X-ray (SEM-EDX), Braunauer-Emmett-Teller (BET) and thermogravimetric analysis (TGA). FTIR analysis confirmed the presence of carboxylic groups in the acid treated MWCNTs as well as the successfully doping of Fe3O4 nanoparticles onto MWCNTs. Next, XRD and SEM-EDX analysis further supported that the synthesized nanocomposites consisted of both hexagonal graphite structure of MWCNTs and the inverse spinel structure of Fe3O4 nanoparticles. In addition, BET analysis indicated that the surface area of the synthesized MWCNTs-Fe3O4 nanocomposites increased significantly as compared to the raw and acid treated MWCNTs. TGA analysis also showed that the MWCNTs-Fe3O4 nanocomposites to possess high thermal stability. Design Expert simulation was employed to determine the effects of various process parameters in the adsorption and degradation of MB. The process parameters studied included pH (2 – 10), initial MB concentration (10 – 50 mg/L), MWCNTs-Fe3O4 nanocomposites dosage (10 – 30 mg) and H2O2 concentration (5 – 20 mmol/L). The optimum reaction condition was then acquired via the response surface methodology (RSM) associated with central composite design (CCD). Results showed that an average optimum percentage of MB degradation of 95.92 % can be achieved under the following reaction conditions: pH of 5.86, initial MB concentration of 32.22 mg/L, MWCNTs-Fe3O4 nanocomposites dosage of 27 mg and H2O2 concentration of 13.02 mmol/L.
format Final Year Project / Dissertation / Thesis
author Lee, Ee Chia
author_facet Lee, Ee Chia
author_sort Lee, Ee Chia
title Simultaneous Adsorption And Degradation Of Methylene Blue Using Magnetic Carbon Nanotubes
title_short Simultaneous Adsorption And Degradation Of Methylene Blue Using Magnetic Carbon Nanotubes
title_full Simultaneous Adsorption And Degradation Of Methylene Blue Using Magnetic Carbon Nanotubes
title_fullStr Simultaneous Adsorption And Degradation Of Methylene Blue Using Magnetic Carbon Nanotubes
title_full_unstemmed Simultaneous Adsorption And Degradation Of Methylene Blue Using Magnetic Carbon Nanotubes
title_sort simultaneous adsorption and degradation of methylene blue using magnetic carbon nanotubes
publishDate 2020
url http://eprints.utar.edu.my/3706/1/1505305_FYP_report_%2D_EE_CHIA_LEE.pdf
http://eprints.utar.edu.my/3706/
_version_ 1672614739559055360
score 13.211869

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