Photocatalytic water splitting for hydrogen production using carbon nanotubes-based catalysts under visible light
The most common methods that are widely used to produce hydrogen are steam reforming and catalytic reforming. Both methods rely on the use of fossil fuels, thus generating large amounts of greenhouse gases such as carbon dioxide. Hydrogen production from photocatalytic water splitting using solar...
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| Other Authors: | |
| Format: | Final Year Project (FYP) |
| Language: | English |
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2010
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| Online Access: | http://hdl.handle.net/10356/39670 |
| _version_ | 1811686470582272000 |
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| author | Koh, Wing Hong. |
| author2 | Xu Rong |
| author_facet | Xu Rong Koh, Wing Hong. |
| author_sort | Koh, Wing Hong. |
| collection | NTU |
| description | The most common methods that are widely used to produce hydrogen are steam reforming
and catalytic reforming. Both methods rely on the use of fossil fuels, thus generating large
amounts of greenhouse gases such as carbon dioxide. Hydrogen production from photocatalytic
water splitting using solar energy and photocatalysts is considered as one of the promising
routes.
In the experiments involved in this Final Year Project, water splitting photocatalysts have been
successfully synthesized using multi-walled carbon nanotubes (MWNT) as support. MWNT was
useful as a support as it is able to serve as an electrical conductor and is corrosion resistant. Its
electrical conductivity allows for the transfer of electrons from the conduction band of CNTs to
metal particles deposited on the surface of MWNTs, while photo-generated valence band holes
remain on MWNT. This enables efficient separation and stronger photocatalytic reactions by
greatly reducing the possibility of electron-hole recombination. Being corrosion resistant allows
MWNT-supported catalysts to last longer when used to catalyse reactions.
Various parameters such as metal loading, pH and cooling time have been tested to investigate
the effect on the activity of the photocatalysts synthesized. Experiments using single-walled
carbon nanotubes (SWNT) and carbon nanospheres (CNS) as photocatalyst supports were
conducted to test their effectiveness. An extended water-splitting test was then conducted
using the optimal photocatalysts and experimental conditions to test the stability of the
catalytic reaction. The best H2 production rate obtained was 465.97 μmol/h. |
| first_indexed | 2024-10-01T05:00:56Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/39670 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:00:56Z |
| publishDate | 2010 |
| record_format | dspace |
| spelling | ntu-10356/396702023-03-03T15:35:41Z Photocatalytic water splitting for hydrogen production using carbon nanotubes-based catalysts under visible light Koh, Wing Hong. Xu Rong School of Chemical and Biomedical Engineering DRNTU::Engineering::Chemical engineering::Water in chemical industry The most common methods that are widely used to produce hydrogen are steam reforming and catalytic reforming. Both methods rely on the use of fossil fuels, thus generating large amounts of greenhouse gases such as carbon dioxide. Hydrogen production from photocatalytic water splitting using solar energy and photocatalysts is considered as one of the promising routes. In the experiments involved in this Final Year Project, water splitting photocatalysts have been successfully synthesized using multi-walled carbon nanotubes (MWNT) as support. MWNT was useful as a support as it is able to serve as an electrical conductor and is corrosion resistant. Its electrical conductivity allows for the transfer of electrons from the conduction band of CNTs to metal particles deposited on the surface of MWNTs, while photo-generated valence band holes remain on MWNT. This enables efficient separation and stronger photocatalytic reactions by greatly reducing the possibility of electron-hole recombination. Being corrosion resistant allows MWNT-supported catalysts to last longer when used to catalyse reactions. Various parameters such as metal loading, pH and cooling time have been tested to investigate the effect on the activity of the photocatalysts synthesized. Experiments using single-walled carbon nanotubes (SWNT) and carbon nanospheres (CNS) as photocatalyst supports were conducted to test their effectiveness. An extended water-splitting test was then conducted using the optimal photocatalysts and experimental conditions to test the stability of the catalytic reaction. The best H2 production rate obtained was 465.97 μmol/h. Bachelor of Engineering (Chemical and Biomolecular Engineering) 2010-06-02T07:36:22Z 2010-06-02T07:36:22Z 2010 2010 Final Year Project (FYP) http://hdl.handle.net/10356/39670 en Nanyang Technological University 59 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Chemical engineering::Water in chemical industry Koh, Wing Hong. Photocatalytic water splitting for hydrogen production using carbon nanotubes-based catalysts under visible light |
| title | Photocatalytic water splitting for hydrogen production using carbon nanotubes-based catalysts under visible light |
| title_full | Photocatalytic water splitting for hydrogen production using carbon nanotubes-based catalysts under visible light |
| title_fullStr | Photocatalytic water splitting for hydrogen production using carbon nanotubes-based catalysts under visible light |
| title_full_unstemmed | Photocatalytic water splitting for hydrogen production using carbon nanotubes-based catalysts under visible light |
| title_short | Photocatalytic water splitting for hydrogen production using carbon nanotubes-based catalysts under visible light |
| title_sort | photocatalytic water splitting for hydrogen production using carbon nanotubes based catalysts under visible light |
| topic | DRNTU::Engineering::Chemical engineering::Water in chemical industry |
| url | http://hdl.handle.net/10356/39670 |
| work_keys_str_mv | AT kohwinghong photocatalyticwatersplittingforhydrogenproductionusingcarbonnanotubesbasedcatalystsundervisiblelight |