Metal oxides incorporated polyacrylonitrile-based activated carbon nanofibers on methane adsorption

This study aims to investigate the effects of incorporation metal oxide in PAN-based activated carbon nanofibers (ACNFs) and its physicochemical properties and gas adsorption capabilities. The nanofibers (NFs) were fabricated via electrospinning process by preparing the polymer solution of polyacryl...

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Main Author:	Che Othman, Faten Ermala
Format:	Thesis
Language:	English
Published:	2017
Subjects:	TP Chemical technology
Online Access:	http://eprints.utm.my/id/eprint/77943/1/FatenErmalaCheMFChE2017.pdf
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spelling	my-utm-ep.779432018-07-23T06:05:14Z Metal oxides incorporated polyacrylonitrile-based activated carbon nanofibers on methane adsorption 2017-02 Che Othman, Faten Ermala TP Chemical technology This study aims to investigate the effects of incorporation metal oxide in PAN-based activated carbon nanofibers (ACNFs) and its physicochemical properties and gas adsorption capabilities. The nanofibers (NFs) were fabricated via electrospinning process by preparing the polymer solution of polyacrylonitrile (PAN) with different concentrations of manganese dioxide (MnO2) and magnesium oxide (MgO) in N, N-dimethylformamide solvent and were further activated through pyrolysis process under optimum conditions. The effects of incorporating different weight ratio of metal oxide into PAN- based ACNFs (0 to 15% relative to PAN wt.) were evaluated based on the chemical and physical morphologies as well as its adsorption performance. Results showed that the ACNFs blended with MnO2 and MgO possess a specific surface area (SSA) up to 430.87 and 1893.09 m2/g, respectively with higher microporous structure. The Fourier transform infrared spectrum indicated that the MnO2 and MgO bonds can be detected at 547 and 476 cm-1, respectively. The x-ray diffraction elucidated both crystalline structure and crystallite sizes of ACNFs are loaded with MnO2 and MgO. The diameter of the resultant ACNFs is inversely proportional to the concentrations of the metal oxide as shown by scanning electron microscopy micrograph. The addition of metal oxides up to 15% (relative to PAN wt.) in polymer solution significantly increased the SSA of the NFs to about four times as compared to metal oxide-free ACNFs; however, the methane (CH4) uptake up to 2.39 mmol/g was attained for ACNFs containing both metal oxides from the static volumetric test. This study suggested that the addition of metal oxide in PAN-based ACNFs would produce a new modified gas adsorbent with higher SSA and excellent porosity with increasing adsorption capacity of CH4. 2017-02 Thesis http://eprints.utm.my/id/eprint/77943/ http://eprints.utm.my/id/eprint/77943/1/FatenErmalaCheMFChE2017.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:105037 masters Universiti Teknologi Malaysia, Faculty of Chemical Engineering Faculty of Chemical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Che Othman, Faten Ermala Metal oxides incorporated polyacrylonitrile-based activated carbon nanofibers on methane adsorption
description	This study aims to investigate the effects of incorporation metal oxide in PAN-based activated carbon nanofibers (ACNFs) and its physicochemical properties and gas adsorption capabilities. The nanofibers (NFs) were fabricated via electrospinning process by preparing the polymer solution of polyacrylonitrile (PAN) with different concentrations of manganese dioxide (MnO2) and magnesium oxide (MgO) in N, N-dimethylformamide solvent and were further activated through pyrolysis process under optimum conditions. The effects of incorporating different weight ratio of metal oxide into PAN- based ACNFs (0 to 15% relative to PAN wt.) were evaluated based on the chemical and physical morphologies as well as its adsorption performance. Results showed that the ACNFs blended with MnO2 and MgO possess a specific surface area (SSA) up to 430.87 and 1893.09 m2/g, respectively with higher microporous structure. The Fourier transform infrared spectrum indicated that the MnO2 and MgO bonds can be detected at 547 and 476 cm-1, respectively. The x-ray diffraction elucidated both crystalline structure and crystallite sizes of ACNFs are loaded with MnO2 and MgO. The diameter of the resultant ACNFs is inversely proportional to the concentrations of the metal oxide as shown by scanning electron microscopy micrograph. The addition of metal oxides up to 15% (relative to PAN wt.) in polymer solution significantly increased the SSA of the NFs to about four times as compared to metal oxide-free ACNFs; however, the methane (CH4) uptake up to 2.39 mmol/g was attained for ACNFs containing both metal oxides from the static volumetric test. This study suggested that the addition of metal oxide in PAN-based ACNFs would produce a new modified gas adsorbent with higher SSA and excellent porosity with increasing adsorption capacity of CH4.
format	Thesis
qualification_level	Master's degree
author	Che Othman, Faten Ermala
author_facet	Che Othman, Faten Ermala
author_sort	Che Othman, Faten Ermala
title	Metal oxides incorporated polyacrylonitrile-based activated carbon nanofibers on methane adsorption
title_short	Metal oxides incorporated polyacrylonitrile-based activated carbon nanofibers on methane adsorption
title_full	Metal oxides incorporated polyacrylonitrile-based activated carbon nanofibers on methane adsorption
title_fullStr	Metal oxides incorporated polyacrylonitrile-based activated carbon nanofibers on methane adsorption
title_full_unstemmed	Metal oxides incorporated polyacrylonitrile-based activated carbon nanofibers on methane adsorption
title_sort	metal oxides incorporated polyacrylonitrile-based activated carbon nanofibers on methane adsorption
granting_institution	Universiti Teknologi Malaysia, Faculty of Chemical Engineering
granting_department	Faculty of Chemical Engineering
publishDate	2017
url	http://eprints.utm.my/id/eprint/77943/1/FatenErmalaCheMFChE2017.pdf
_version_	1747817868878151680

Metal oxides incorporated polyacrylonitrile-based activated carbon nanofibers on methane adsorption

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