Synthesis And Characterization Of Carbon Coated And Nitrogen Doped Tio2 For Enhanced Photocatalytic Degradation Of Organic Pollutants Under Uv-Vis And Visible Light Irradiation
A commercially available and relatively cheap TiO2 (99% anatase) and TiO2-P25 (80% anatase and 20% rutile) were modified to produce carbon (C) and nitrogen (N) incorporated TiO2 to improve its photoactivity under UV-Vis and visible light regions. Both the TiO2 and TiO2-P25 were modified using natura...
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| Format: | Thesis |
| Language: | English |
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2013
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| Online Access: | http://eprints.usm.my/45221/ http://eprints.usm.my/45221/1/Wan%20Izhan%20Nawawi%20Wan%20Ismail24.pdf |
| _version_ | 1848880268008488960 |
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| author | Ismail, Wan Izhan Nawawi Wan |
| author_facet | Ismail, Wan Izhan Nawawi Wan |
| author_sort | Ismail, Wan Izhan Nawawi Wan |
| building | USM Institutional Repository |
| collection | Online Access |
| description | A commercially available and relatively cheap TiO2 (99% anatase) and TiO2-P25 (80% anatase and 20% rutile) were modified to produce carbon (C) and nitrogen (N) incorporated TiO2 to improve its photoactivity under UV-Vis and visible light regions. Both the TiO2 and TiO2-P25 were modified using natural polymers of ENR-50 and peat coagulant (peat) as carbon precursor while urea was used as N and C precursor. TiO2 modified with ENR-50 produced a C coated TiO2. The optimum condition for C coating was 1.0 g ENR-50 solution and 560 °C of calcination temperature to yield the optimum C coated sample containing 0.25 % C with a C layer thickness of 0.68 nm. By using Reactive Red 4 dye (RR4) as model pollutant, the photocatalytic degradation rate of the optimum C coated TiO2 was 3.7 and 5.5 times faster than that of the pristine TiO2 under 45 W fluorescent lamp and solar irradiations respectively. The C layer present in TiO2 was responsible for increasing its photoactivity by acting as an electron scavenger. However, no photocatalytic degradation was observed under visible light irradiation for all C coated TiO2 due to their bandgap energy (Eg) values higher than 3.0 eV. |
| first_indexed | 2025-11-15T18:00:25Z |
| format | Thesis |
| id | usm-45221 |
| institution | Universiti Sains Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T18:00:25Z |
| publishDate | 2013 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | usm-452212019-08-07T07:29:29Z http://eprints.usm.my/45221/ Synthesis And Characterization Of Carbon Coated And Nitrogen Doped Tio2 For Enhanced Photocatalytic Degradation Of Organic Pollutants Under Uv-Vis And Visible Light Irradiation Ismail, Wan Izhan Nawawi Wan TP1-1185 Chemical technology A commercially available and relatively cheap TiO2 (99% anatase) and TiO2-P25 (80% anatase and 20% rutile) were modified to produce carbon (C) and nitrogen (N) incorporated TiO2 to improve its photoactivity under UV-Vis and visible light regions. Both the TiO2 and TiO2-P25 were modified using natural polymers of ENR-50 and peat coagulant (peat) as carbon precursor while urea was used as N and C precursor. TiO2 modified with ENR-50 produced a C coated TiO2. The optimum condition for C coating was 1.0 g ENR-50 solution and 560 °C of calcination temperature to yield the optimum C coated sample containing 0.25 % C with a C layer thickness of 0.68 nm. By using Reactive Red 4 dye (RR4) as model pollutant, the photocatalytic degradation rate of the optimum C coated TiO2 was 3.7 and 5.5 times faster than that of the pristine TiO2 under 45 W fluorescent lamp and solar irradiations respectively. The C layer present in TiO2 was responsible for increasing its photoactivity by acting as an electron scavenger. However, no photocatalytic degradation was observed under visible light irradiation for all C coated TiO2 due to their bandgap energy (Eg) values higher than 3.0 eV. 2013 Thesis NonPeerReviewed application/pdf en http://eprints.usm.my/45221/1/Wan%20Izhan%20Nawawi%20Wan%20Ismail24.pdf Ismail, Wan Izhan Nawawi Wan (2013) Synthesis And Characterization Of Carbon Coated And Nitrogen Doped Tio2 For Enhanced Photocatalytic Degradation Of Organic Pollutants Under Uv-Vis And Visible Light Irradiation. PhD thesis, Universiti Sains Malaysia. |
| spellingShingle | TP1-1185 Chemical technology Ismail, Wan Izhan Nawawi Wan Synthesis And Characterization Of Carbon Coated And Nitrogen Doped Tio2 For Enhanced Photocatalytic Degradation Of Organic Pollutants Under Uv-Vis And Visible Light Irradiation |
| title | Synthesis And Characterization Of Carbon Coated And Nitrogen Doped Tio2 For Enhanced Photocatalytic Degradation Of Organic Pollutants Under Uv-Vis And Visible Light Irradiation |
| title_full | Synthesis And Characterization Of Carbon Coated And Nitrogen Doped Tio2 For Enhanced Photocatalytic Degradation Of Organic Pollutants Under Uv-Vis And Visible Light Irradiation |
| title_fullStr | Synthesis And Characterization Of Carbon Coated And Nitrogen Doped Tio2 For Enhanced Photocatalytic Degradation Of Organic Pollutants Under Uv-Vis And Visible Light Irradiation |
| title_full_unstemmed | Synthesis And Characterization Of Carbon Coated And Nitrogen Doped Tio2 For Enhanced Photocatalytic Degradation Of Organic Pollutants Under Uv-Vis And Visible Light Irradiation |
| title_short | Synthesis And Characterization Of Carbon Coated And Nitrogen Doped Tio2 For Enhanced Photocatalytic Degradation Of Organic Pollutants Under Uv-Vis And Visible Light Irradiation |
| title_sort | synthesis and characterization of carbon coated and nitrogen doped tio2 for enhanced photocatalytic degradation of organic pollutants under uv-vis and visible light irradiation |
| topic | TP1-1185 Chemical technology |
| url | http://eprints.usm.my/45221/ http://eprints.usm.my/45221/1/Wan%20Izhan%20Nawawi%20Wan%20Ismail24.pdf |