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...

Full description

Saved in:

Bibliographic Details
Main Author:	Ismail, Wan Izhan Nawawi Wan
Format:	Thesis
Language:	English
Published:	2013
Subjects:	TP1-1185 Chemical technology
Online Access:	http://eprints.usm.my/45221/1/Wan%20Izhan%20Nawawi%20Wan%20Ismail24.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-usm-ep.45221
record_format	uketd_dc
spelling	my-usm-ep.452212019-08-07T07:29:29Z Synthesis And Characterization Of Carbon Coated And Nitrogen Doped Tio2 For Enhanced Photocatalytic Degradation Of Organic Pollutants Under Uv-Vis And Visible Light Irradiation 2013 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 http://eprints.usm.my/45221/ http://eprints.usm.my/45221/1/Wan%20Izhan%20Nawawi%20Wan%20Ismail24.pdf application/pdf en public phd doctoral Universiti Sains Malaysia Pusat Pengajian Kejuruteraan Kimia
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	TP1-1185 Chemical technology
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
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.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Ismail, Wan Izhan Nawawi Wan
author_facet	Ismail, Wan Izhan Nawawi Wan
author_sort	Ismail, Wan Izhan Nawawi Wan
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_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_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_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
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Kejuruteraan Kimia
publishDate	2013
url	http://eprints.usm.my/45221/1/Wan%20Izhan%20Nawawi%20Wan%20Ismail24.pdf
_version_	1747821471988711424

Synthesis And Characterization Of Carbon Coated And Nitrogen Doped Tio2 For Enhanced Photocatalytic Degradation Of Organic Pollutants Under Uv-Vis And Visible Light Irradiation

Similar Items