Growth Of Single-Walled Carbon Nanotubes Through Pengethanol Colloidal Solution

Since the discovery of carbon nanotubes (CNTs), powder form catalyst support becomes the dominant in this field. But powder form catalyst support possesses some shortcoming such as difficulty in catalyst size monitoring and required subsequent purification. In this study, CNTs were grown over iron n...

Full description

Saved in:

Bibliographic Details
Main Author:	Seah, Choon Ming
Format:	Thesis
Language:	English
Published:	2011
Subjects:	TP1-1185 Chemical technology
Online Access:	http://eprints.usm.my/46295/1/SEAH%20CHOON%20MING_HJ.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-usm-ep.46295
record_format	uketd_dc
spelling	my-usm-ep.462952020-02-20T06:44:06Z Growth Of Single-Walled Carbon Nanotubes Through Pengethanol Colloidal Solution 2011-10 Seah, Choon Ming TP1-1185 Chemical technology Since the discovery of carbon nanotubes (CNTs), powder form catalyst support becomes the dominant in this field. But powder form catalyst support possesses some shortcoming such as difficulty in catalyst size monitoring and required subsequent purification. In this study, CNTs were grown over iron nanoparticles prepared by spin coated iron nitrate that diluted in colloidal solution of absolute ethanol and polyethylene glycol (PEG). The colloidal solution was later spin coated on silicon wafer and through catalytic chemical vapor deposition (CCVD) to grow CNTs. This approach competently overcomes the shortcomings aforementioned. In order to understand the effects of various process parameters on the topography of iron nanoparticles obtained and morphology of the as-grown CNTs, all the process parameters were studied separately. The parametric study was done in three stages, representing colloidal solution (composition of colloidal solution and concentration of iron nitrate), spin coating (spin speed, angular acceleration and spin period) and CCVD (reaction temperature, methane partial pressure and reaction period) study. Iron nitrate with concentration of 40mmol/L diluted in colloidal solution at a ratio 1:1 (v/v) of absolute ethanol to PEG-400, spin coated on silicon wafer at 8000 rpm for 30 seconds and under angular acceleration of 300rpm/sec was the best parameter to distribute iron nanoparticles evenly and in small size. This catalyst sample could grow single-walled CNTs (SWCNTs) with the highest selectivity and uniformity in diameter. Piranha solution was found useful to render the hyrophobicity of silicon oxide by introducing –OH group on the wafer. 2011-10 Thesis http://eprints.usm.my/46295/ http://eprints.usm.my/46295/1/SEAH%20CHOON%20MING_HJ.pdf application/pdf en public masters Universiti Sains Malaysia Pusat Pengajian Kejuruteraan Awam
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	TP1-1185 Chemical technology
spellingShingle	TP1-1185 Chemical technology Seah, Choon Ming Growth Of Single-Walled Carbon Nanotubes Through Pengethanol Colloidal Solution
description	Since the discovery of carbon nanotubes (CNTs), powder form catalyst support becomes the dominant in this field. But powder form catalyst support possesses some shortcoming such as difficulty in catalyst size monitoring and required subsequent purification. In this study, CNTs were grown over iron nanoparticles prepared by spin coated iron nitrate that diluted in colloidal solution of absolute ethanol and polyethylene glycol (PEG). The colloidal solution was later spin coated on silicon wafer and through catalytic chemical vapor deposition (CCVD) to grow CNTs. This approach competently overcomes the shortcomings aforementioned. In order to understand the effects of various process parameters on the topography of iron nanoparticles obtained and morphology of the as-grown CNTs, all the process parameters were studied separately. The parametric study was done in three stages, representing colloidal solution (composition of colloidal solution and concentration of iron nitrate), spin coating (spin speed, angular acceleration and spin period) and CCVD (reaction temperature, methane partial pressure and reaction period) study. Iron nitrate with concentration of 40mmol/L diluted in colloidal solution at a ratio 1:1 (v/v) of absolute ethanol to PEG-400, spin coated on silicon wafer at 8000 rpm for 30 seconds and under angular acceleration of 300rpm/sec was the best parameter to distribute iron nanoparticles evenly and in small size. This catalyst sample could grow single-walled CNTs (SWCNTs) with the highest selectivity and uniformity in diameter. Piranha solution was found useful to render the hyrophobicity of silicon oxide by introducing –OH group on the wafer.
format	Thesis
qualification_level	Master's degree
author	Seah, Choon Ming
author_facet	Seah, Choon Ming
author_sort	Seah, Choon Ming
title	Growth Of Single-Walled Carbon Nanotubes Through Pengethanol Colloidal Solution
title_short	Growth Of Single-Walled Carbon Nanotubes Through Pengethanol Colloidal Solution
title_full	Growth Of Single-Walled Carbon Nanotubes Through Pengethanol Colloidal Solution
title_fullStr	Growth Of Single-Walled Carbon Nanotubes Through Pengethanol Colloidal Solution
title_full_unstemmed	Growth Of Single-Walled Carbon Nanotubes Through Pengethanol Colloidal Solution
title_sort	growth of single-walled carbon nanotubes through pengethanol colloidal solution
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Kejuruteraan Awam
publishDate	2011
url	http://eprints.usm.my/46295/1/SEAH%20CHOON%20MING_HJ.pdf
_version_	1747821646819885056

Growth Of Single-Walled Carbon Nanotubes Through Pengethanol Colloidal Solution

Similar Items