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Synthesis and characterization of silicon carbide nanotube via microwave assisted method

Master of Science in Nanomaterials Engineering

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Main Author: Tony Voo, Chung Sung
Other Authors: Voon, Chun Hong, Dr.
Format: Thesis
Language:English
Published: Universiti Malaysia Perlis (UniMAP) 2018
Subjects:
Nanostructured materials
Silicon compounds
Silicon polymers
Microwave amplifiers
Chemical tests and reagents
Online Access:http://dspace.unimap.edu.my:80/xmlui/handle/123456789/76732
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spelling my.unimap-767322022-11-08T02:54:43Z Synthesis and characterization of silicon carbide nanotube via microwave assisted method Tony Voo, Chung Sung Voon, Chun Hong, Dr. Nanostructured materials Silicon compounds Silicon polymers Microwave amplifiers Chemical tests and reagents Master of Science in Nanomaterials Engineering Silicon carbide (SiC) is well known as one of the most useful materials due to its high hardness next to diamond. Silicon carbide nanotubes (SiCNTs) and nanowires (SiCNWs) especially have high potential in high temperature and harsh environment electronic applications. The objectives of this study were to investigate the effect of ratio of SiO2 particles and MWCNTs, heating temperature, heating duration and types of CNTs (MWCNTs and SWCNTs) on the synthesis of SiCNTs by microwave heating in terms of morphology, compositions, optical properties and thermal stability. Effect of different ratio was studied by varying the molar ratio of SiO2 particles and MWCNTs in the blend to 1:1, 1:3, 1:5 and 1:7 while for the study of effect of heating temperature, temperature was varied from 1350 °C, 1400 °C and 1450 °C. Heating duration of 20, 40 and 60 minutes were used in this study to investigate the effect of heating duration on the synthesis of SiCNTs. Two types of CNTs (MWCNTs and SWCNTs) were used to investigate the effect of type of CNTs on synthesized SiCNMs. Ultrasonic mixing was used to mix SiO2 particles and MWCNTs in ethanol which was then dried before being cold pressed into 3 mm pellet. After that, the pellet was put into alumina crucible and microwave heating was conducted in a 2.45 GHz multi-mode cavity microwave with heating rate of 30 °C/minute. FESEM and TEM were used to investigate the morphology of the SiCNMs. Meanwhile, composition analysis was done by using XRD and EDX. PL was used to study the optical properties, while thermal properties were investigated by using TGA analysis. Ratio 1:3 of SiO2 particles and MWCNTs has showed synthesis of single-phase SiCNTs as supported by XRD patterns where no residual of SiO2 particles and MWCNTs was observed. Meanwhile, heating temperature at 1400 °C and 40 minutes heating duration was determined as the most ideal temperature to synthesize single-phase SiCNTs in which SiO2 particles and MWCNTs reacted completely become single-phase SiCNTs. Furthermore, single phase SiCNTs was successfully synthesized from blend of SiO2 particles and MWCNTs in the ratio of 1:3 while blend of SiO2 particles and SWCNTs in similar ratio formed SiCNWs. Images of TEM have confirmed that the synthesized SiCNTs has hollow tubular structure while SiCNWs has a solid nanowires structure. It can be postulated that ratio of SiO2 particles and MWCNTs, heating temperature and heating duration has significant effect to the synthesis of SiCNTs. Besides that, type of CNTs (MWCNTs and SWCNTs has significant effect on the formation of SiCNMs where SiCNTs was obtained from the blend of SiO2 particles and MWCNTs while SiCNWs synthesized when blend of SiO2 particles and SWCNTs was used. It can be concluded that microwave heating for the synthesis of single-phase SiCNTs was achieved when blend of SiO2 particles and MWCNTs in the ratio of 1:3, heating temperature at 1400 °C, heating duration of 40 minutes was used in this study. 2018 2022-11-08T02:54:43Z 2022-11-08T02:54:43Z Thesis http://dspace.unimap.edu.my:80/xmlui/handle/123456789/76732 en Universiti Malaysia Perlis (UniMAP) Universiti Malaysia Perlis (UniMAP) Institute of Nano Electronic Engineering
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Nanostructured materials
Silicon compounds
Silicon polymers
Microwave amplifiers
Chemical tests and reagents
spellingShingle Nanostructured materials
Silicon compounds
Silicon polymers
Microwave amplifiers
Chemical tests and reagents
Tony Voo, Chung Sung
Synthesis and characterization of silicon carbide nanotube via microwave assisted method
description Master of Science in Nanomaterials Engineering
author2 Voon, Chun Hong, Dr.
author_facet Voon, Chun Hong, Dr.
Tony Voo, Chung Sung
format Thesis
author Tony Voo, Chung Sung
author_sort Tony Voo, Chung Sung
title Synthesis and characterization of silicon carbide nanotube via microwave assisted method
title_short Synthesis and characterization of silicon carbide nanotube via microwave assisted method
title_full Synthesis and characterization of silicon carbide nanotube via microwave assisted method
title_fullStr Synthesis and characterization of silicon carbide nanotube via microwave assisted method
title_full_unstemmed Synthesis and characterization of silicon carbide nanotube via microwave assisted method
title_sort synthesis and characterization of silicon carbide nanotube via microwave assisted method
publisher Universiti Malaysia Perlis (UniMAP)
publishDate 2018
url http://dspace.unimap.edu.my:80/xmlui/handle/123456789/76732
_version_ 1751537964512444416
score 13.160551

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