Physicochemical and electrochemical properties of mesoporous silica carbon electrode / Noramira Saad

Lack of explanation in correlation between materials structure and the electrochemical behaviours becoming a growing concern. In this study, the aims are to synthesise and characterise the physical properties of the mesoporous silica Santa Barbara Amorphous- 15 and -16 (SBA-15 and SBA-16) and,...

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Main Author:	Saad, Noramira
Format:	Thesis
Language:	English
Published:	2020
Subjects:	Electrochemistry Electrolysis
Online Access:	https://ir.uitm.edu.my/id/eprint/52259/1/52259.pdf
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id	my-uitm-ir.52259
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spelling	my-uitm-ir.522592022-05-19T14:20:01Z Physicochemical and electrochemical properties of mesoporous silica carbon electrode / Noramira Saad 2020-07 Saad, Noramira Electrochemistry. Electrolysis Lack of explanation in correlation between materials structure and the electrochemical behaviours becoming a growing concern. In this study, the aims are to synthesise and characterise the physical properties of the mesoporous silica Santa Barbara Amorphous- 15 and -16 (SBA-15 and SBA-16) and, followed by fabrication of mesoporous silica- carbon electrode (MCPE) and investigate the electrochemical behaviours. The mesoporous SBA-15 and SBA-16 were synthesized via surfactant templating approach using triblock copolymer P123 and F127 as directing agent and tetraethyl orthosilicate (TEOS) as silica source. The synthesized materials were characterized by X-ray diffraction (XRD), infra-red spectroscopy (IR), thermal gravimetric analysis (TGA), scanning electron microscopy (SEM) and nitrogen absorption-desorption tests. The pore diameters were 5.5 nm and 3.2 nm for SBA-15 and SBA-16 respectively, determined with BJH method based on adsorption data. Three different electrodes were fabricated, carbon paste electron (CPE) and two modified carbon paste electrodes (MCPE): SBA-15/MPCE and SBA-16/MPCE. The fabricated electrodes were tested using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The addition of mesoporous silica to the carbon electrode improved the electrochemical behaviors of the electrode formation of microelectrode thus enhanced migration of the electrons. The SBA-16/MCPE showed better adsorption, response signal and a lower resistance compare to SBA-15/MCPE due to 3D cubic structure of SBA-16 which provide better electron pathway than SBA-15 2D hexagonal structure. 2020-07 Thesis https://ir.uitm.edu.my/id/eprint/52259/ https://ir.uitm.edu.my/id/eprint/52259/1/52259.pdf text en public masters Universiti Teknologi MARA Faculty of Applied Sciences Jalil, Mohammad Noor (Dr.)
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
advisor	Jalil, Mohammad Noor (Dr.)
topic	Electrochemistry Electrolysis
spellingShingle	Electrochemistry Electrolysis Saad, Noramira Physicochemical and electrochemical properties of mesoporous silica carbon electrode / Noramira Saad
description	Lack of explanation in correlation between materials structure and the electrochemical behaviours becoming a growing concern. In this study, the aims are to synthesise and characterise the physical properties of the mesoporous silica Santa Barbara Amorphous- 15 and -16 (SBA-15 and SBA-16) and, followed by fabrication of mesoporous silica- carbon electrode (MCPE) and investigate the electrochemical behaviours. The mesoporous SBA-15 and SBA-16 were synthesized via surfactant templating approach using triblock copolymer P123 and F127 as directing agent and tetraethyl orthosilicate (TEOS) as silica source. The synthesized materials were characterized by X-ray diffraction (XRD), infra-red spectroscopy (IR), thermal gravimetric analysis (TGA), scanning electron microscopy (SEM) and nitrogen absorption-desorption tests. The pore diameters were 5.5 nm and 3.2 nm for SBA-15 and SBA-16 respectively, determined with BJH method based on adsorption data. Three different electrodes were fabricated, carbon paste electron (CPE) and two modified carbon paste electrodes (MCPE): SBA-15/MPCE and SBA-16/MPCE. The fabricated electrodes were tested using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The addition of mesoporous silica to the carbon electrode improved the electrochemical behaviors of the electrode formation of microelectrode thus enhanced migration of the electrons. The SBA-16/MCPE showed better adsorption, response signal and a lower resistance compare to SBA-15/MCPE due to 3D cubic structure of SBA-16 which provide better electron pathway than SBA-15 2D hexagonal structure.
format	Thesis
qualification_level	Master's degree
author	Saad, Noramira
author_facet	Saad, Noramira
author_sort	Saad, Noramira
title	Physicochemical and electrochemical properties of mesoporous silica carbon electrode / Noramira Saad
title_short	Physicochemical and electrochemical properties of mesoporous silica carbon electrode / Noramira Saad
title_full	Physicochemical and electrochemical properties of mesoporous silica carbon electrode / Noramira Saad
title_fullStr	Physicochemical and electrochemical properties of mesoporous silica carbon electrode / Noramira Saad
title_full_unstemmed	Physicochemical and electrochemical properties of mesoporous silica carbon electrode / Noramira Saad
title_sort	physicochemical and electrochemical properties of mesoporous silica carbon electrode / noramira saad
granting_institution	Universiti Teknologi MARA
granting_department	Faculty of Applied Sciences
publishDate	2020
url	https://ir.uitm.edu.my/id/eprint/52259/1/52259.pdf
_version_	1783734851012132864

Physicochemical and electrochemical properties of mesoporous silica carbon electrode / Noramira Saad

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