Development and characterization of coupled carbon nanotube-titanium dioxide systems

In the discovery of photocatalytic properties on Titanium Dioxide (TiO2) by Fujishima and Honda, it is well-known that TiO2 aided in the degradation of pollutants into non-toxic compounds like water and carbon dioxide. However, the efficiency on the photocatalysis by TiO2 is reduced due to the fast...

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Main Author: Chan, Yeat Hui.
Other Authors: Tay Beng Kang
Format: Final Year Project
Language:English
Published: 2010
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Online Access:http://hdl.handle.net/10356/39908
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Institution: Nanyang Technological University
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spelling sg-ntu-dr.10356-399082023-07-07T17:42:43Z Development and characterization of coupled carbon nanotube-titanium dioxide systems Chan, Yeat Hui. Tay Beng Kang School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering::Microelectronics In the discovery of photocatalytic properties on Titanium Dioxide (TiO2) by Fujishima and Honda, it is well-known that TiO2 aided in the degradation of pollutants into non-toxic compounds like water and carbon dioxide. However, the efficiency on the photocatalysis by TiO2 is reduced due to the fast recombination rate and the absorption of photons only at Ultra Violet (UV) range. Many researches had been investigated on enhancing the efficiency of the photocatalytic properties by modifying the properties of tio2 and one of the ways is to introduce a supporting material to enhance the photocatalytic properties. In this report, carbon nanotubes (CNTs) acts as ideal sites for absorption of photoinduced charge carriers to increase charge separation time and enhance the photoefficiency. The development and characterization of the coupled carbon nanotubes and titanium dioxide will be discussed in this report. The carbon nanotubes are synthesized by Plasmas Enhanced Chemical Vapor Deposition (PECVD) and functionalized by acids. Functionalization of the CNTs is used to remove the nickel catalyst. In the acid treatment, liquid phase chemical oxidation produces functional groups are produced which form ester-like linkage to enhance the attachment of the CNTs and TiO2 nanoparticles. The effect of the dispersion of titanium dioxide using different pH level will also be discussed. Finally, methylene blue test were done on both pure TiO2 and CNT-TiO2 system to investigate on the degradation of methylene blue in the presence of the CNT-TiO2 photocatalyst. The characterization tools used were: Scanning Electron Microscope (SEM), Energy Dispersive X-rays spectroscopy (EDX), Raman spectroscopy and UV-VIS spectrometer. Bachelor of Engineering 2010-06-08T01:26:26Z 2010-06-08T01:26:26Z 2010 2010 Final Year Project (FYP) http://hdl.handle.net/10356/39908 en Nanyang Technological University 83 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::Electrical and electronic engineering::Microelectronics
spellingShingle DRNTU::Engineering::Electrical and electronic engineering::Microelectronics
Chan, Yeat Hui.
Development and characterization of coupled carbon nanotube-titanium dioxide systems
description In the discovery of photocatalytic properties on Titanium Dioxide (TiO2) by Fujishima and Honda, it is well-known that TiO2 aided in the degradation of pollutants into non-toxic compounds like water and carbon dioxide. However, the efficiency on the photocatalysis by TiO2 is reduced due to the fast recombination rate and the absorption of photons only at Ultra Violet (UV) range. Many researches had been investigated on enhancing the efficiency of the photocatalytic properties by modifying the properties of tio2 and one of the ways is to introduce a supporting material to enhance the photocatalytic properties. In this report, carbon nanotubes (CNTs) acts as ideal sites for absorption of photoinduced charge carriers to increase charge separation time and enhance the photoefficiency. The development and characterization of the coupled carbon nanotubes and titanium dioxide will be discussed in this report. The carbon nanotubes are synthesized by Plasmas Enhanced Chemical Vapor Deposition (PECVD) and functionalized by acids. Functionalization of the CNTs is used to remove the nickel catalyst. In the acid treatment, liquid phase chemical oxidation produces functional groups are produced which form ester-like linkage to enhance the attachment of the CNTs and TiO2 nanoparticles. The effect of the dispersion of titanium dioxide using different pH level will also be discussed. Finally, methylene blue test were done on both pure TiO2 and CNT-TiO2 system to investigate on the degradation of methylene blue in the presence of the CNT-TiO2 photocatalyst. The characterization tools used were: Scanning Electron Microscope (SEM), Energy Dispersive X-rays spectroscopy (EDX), Raman spectroscopy and UV-VIS spectrometer.
author2 Tay Beng Kang
author_facet Tay Beng Kang
Chan, Yeat Hui.
format Final Year Project
author Chan, Yeat Hui.
author_sort Chan, Yeat Hui.
title Development and characterization of coupled carbon nanotube-titanium dioxide systems
title_short Development and characterization of coupled carbon nanotube-titanium dioxide systems
title_full Development and characterization of coupled carbon nanotube-titanium dioxide systems
title_fullStr Development and characterization of coupled carbon nanotube-titanium dioxide systems
title_full_unstemmed Development and characterization of coupled carbon nanotube-titanium dioxide systems
title_sort development and characterization of coupled carbon nanotube-titanium dioxide systems
publishDate 2010
url http://hdl.handle.net/10356/39908
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