Influence of nitric acid treatment on the electrical conductivity in CNT fiber and CNT sheet

The background of carbon nanotube (CNT) is reviewed to provide a basic understanding on CNT. Although individual CNTs possess exceptional electrical properties, the understanding of the electrical properties of their assemblies is still unclear as these properties are greatly influenced by assembly...

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Main Author: Muhammad Fairus Kamis
Other Authors: School of Mechanical and Aerospace Engineering
Format: Final Year Project
Language:English
Published: 2014
Subjects:
Online Access:http://hdl.handle.net/10356/60929
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-609292023-03-04T18:25:51Z Influence of nitric acid treatment on the electrical conductivity in CNT fiber and CNT sheet Muhammad Fairus Kamis School of Mechanical and Aerospace Engineering Yang Jinglei DRNTU::Engineering The background of carbon nanotube (CNT) is reviewed to provide a basic understanding on CNT. Although individual CNTs possess exceptional electrical properties, the understanding of the electrical properties of their assemblies is still unclear as these properties are greatly influenced by assembly structure and the functionalization of CNTs. In this report, two practical CNT assemblies, CNT fiber and CNT sheet, are produced and treated with nitric acid to study how the treatment influences the assembly’s structure and electrical properties. Characterization techniques such as Scanning Electron Microscope (SEM) and Raman Spectroscopy are employed to study the CNT morphological and structural properties. The electrical properties are measured based on the conductivity of the material, where the resistance and diameter of the CNT assemblies are obtained using CHI760 instrument and SEM. For comparison, CNT fiber and CNT sheet, with and without treatment are studied and analyzed. The results show that treatment with nitric acid introduces defects and functional groups on CNTs, and thus improves the conductivity of CNT sheet. Prolong treatment with nitric acid results in more defects and drastic change in the morphology of CNT assemblies. Furthermore the intensity of D band to G band (ID/IG) ratio of CNT assemblies increases after the treatment. The relationship between functionalization and electrical properties is discussed. Bachelor of Engineering (Mechanical Engineering) 2014-06-03T03:16:23Z 2014-06-03T03:16:23Z 2014 2014 Final Year Project (FYP) http://hdl.handle.net/10356/60929 en Nanyang Technological University 64 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering
spellingShingle DRNTU::Engineering
Muhammad Fairus Kamis
Influence of nitric acid treatment on the electrical conductivity in CNT fiber and CNT sheet
description The background of carbon nanotube (CNT) is reviewed to provide a basic understanding on CNT. Although individual CNTs possess exceptional electrical properties, the understanding of the electrical properties of their assemblies is still unclear as these properties are greatly influenced by assembly structure and the functionalization of CNTs. In this report, two practical CNT assemblies, CNT fiber and CNT sheet, are produced and treated with nitric acid to study how the treatment influences the assembly’s structure and electrical properties. Characterization techniques such as Scanning Electron Microscope (SEM) and Raman Spectroscopy are employed to study the CNT morphological and structural properties. The electrical properties are measured based on the conductivity of the material, where the resistance and diameter of the CNT assemblies are obtained using CHI760 instrument and SEM. For comparison, CNT fiber and CNT sheet, with and without treatment are studied and analyzed. The results show that treatment with nitric acid introduces defects and functional groups on CNTs, and thus improves the conductivity of CNT sheet. Prolong treatment with nitric acid results in more defects and drastic change in the morphology of CNT assemblies. Furthermore the intensity of D band to G band (ID/IG) ratio of CNT assemblies increases after the treatment. The relationship between functionalization and electrical properties is discussed.
author2 School of Mechanical and Aerospace Engineering
author_facet School of Mechanical and Aerospace Engineering
Muhammad Fairus Kamis
format Final Year Project
author Muhammad Fairus Kamis
author_sort Muhammad Fairus Kamis
title Influence of nitric acid treatment on the electrical conductivity in CNT fiber and CNT sheet
title_short Influence of nitric acid treatment on the electrical conductivity in CNT fiber and CNT sheet
title_full Influence of nitric acid treatment on the electrical conductivity in CNT fiber and CNT sheet
title_fullStr Influence of nitric acid treatment on the electrical conductivity in CNT fiber and CNT sheet
title_full_unstemmed Influence of nitric acid treatment on the electrical conductivity in CNT fiber and CNT sheet
title_sort influence of nitric acid treatment on the electrical conductivity in cnt fiber and cnt sheet
publishDate 2014
url http://hdl.handle.net/10356/60929
_version_ 1759856409928794112