Impact of TiO<sub>2</sub> Nanotubes’ Morphology on the Photocatalytic Degradation of Simazine Pollutant
There are various approaches to enhancing the catalytic properties of TiO<sub>2</sub>, including modifying its morphology by altering the surface reactivity and surface area of the catalyst. In this study, the primary aim is to enhance the photocatalytic activity by changing the TiO<s...
Main Authors: | , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2018-10-01
|
Series: | Materials |
Subjects: | |
Online Access: | https://www.mdpi.com/1996-1944/11/11/2066 |
id |
doaj-d295924089ab44cfa028707aa7182478 |
---|---|
record_format |
Article |
spelling |
doaj-d295924089ab44cfa028707aa71824782020-11-24T23:28:07ZengMDPI AGMaterials1996-19442018-10-011111206610.3390/ma11112066ma11112066Impact of TiO<sub>2</sub> Nanotubes’ Morphology on the Photocatalytic Degradation of Simazine PollutantSyazwan Hanani Meriam Suhaimy0Chin Wei Lai1Hairul Anuar Tajuddin2Emy Marlina Samsudin3Mohd Rafie Johan4Nanotechnology and Catalysis Research Centre (NANOCAT), Institute of Graduate Studies, University of Malaya, Kuala Lumpur 50603, MalaysiaNanotechnology and Catalysis Research Centre (NANOCAT), Institute of Graduate Studies, University of Malaya, Kuala Lumpur 50603, MalaysiaDepartment of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur 50603, MalaysiaNanotechnology and Catalysis Research Centre (NANOCAT), Institute of Graduate Studies, University of Malaya, Kuala Lumpur 50603, MalaysiaNanotechnology and Catalysis Research Centre (NANOCAT), Institute of Graduate Studies, University of Malaya, Kuala Lumpur 50603, MalaysiaThere are various approaches to enhancing the catalytic properties of TiO<sub>2</sub>, including modifying its morphology by altering the surface reactivity and surface area of the catalyst. In this study, the primary aim is to enhance the photocatalytic activity by changing the TiO<sub>2</sub> nanotubes’ architecture. The highly ordered infrastructure is favorable for a better charge carrier transfer. It is well known that anodization affects TiO<sub>2</sub> nanotubes’ structure by increasing the anodization duration which in turn influence the photocatalytic activity. The characterizations were conducted by FE-SEM (fiend emission scanning electron microscopy), XRD (X-ray diffraction), RAMAN (Raman spectroscopy), EDX (Energy dispersive X-ray spectroscopy), UV-Vis (Ultraviolet visible spectroscopy) and LCMS/MS/MS (liquid chromatography mass spectroscopy). We found that the morphological structure is affected by the anodization duration according to FE-SEM. The photocatalytic degradation shows a photodegradation rate of k = 0.0104 min<sup>−1</sup>. It is also found that a mineralization of Simazine by our prepared TiO<sub>2</sub> nanotubes leads to the formation of cyanuric acid. We propose three Simazine photodegradation pathways with several intermediates identified.https://www.mdpi.com/1996-1944/11/11/2066TiO<sub>2</sub> nanotubesphotocatalystanodizationSimazinephotocatalyticphotodegradation mechanism |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Syazwan Hanani Meriam Suhaimy Chin Wei Lai Hairul Anuar Tajuddin Emy Marlina Samsudin Mohd Rafie Johan |
spellingShingle |
Syazwan Hanani Meriam Suhaimy Chin Wei Lai Hairul Anuar Tajuddin Emy Marlina Samsudin Mohd Rafie Johan Impact of TiO<sub>2</sub> Nanotubes’ Morphology on the Photocatalytic Degradation of Simazine Pollutant Materials TiO<sub>2</sub> nanotubes photocatalyst anodization Simazine photocatalytic photodegradation mechanism |
author_facet |
Syazwan Hanani Meriam Suhaimy Chin Wei Lai Hairul Anuar Tajuddin Emy Marlina Samsudin Mohd Rafie Johan |
author_sort |
Syazwan Hanani Meriam Suhaimy |
title |
Impact of TiO<sub>2</sub> Nanotubes’ Morphology on the Photocatalytic Degradation of Simazine Pollutant |
title_short |
Impact of TiO<sub>2</sub> Nanotubes’ Morphology on the Photocatalytic Degradation of Simazine Pollutant |
title_full |
Impact of TiO<sub>2</sub> Nanotubes’ Morphology on the Photocatalytic Degradation of Simazine Pollutant |
title_fullStr |
Impact of TiO<sub>2</sub> Nanotubes’ Morphology on the Photocatalytic Degradation of Simazine Pollutant |
title_full_unstemmed |
Impact of TiO<sub>2</sub> Nanotubes’ Morphology on the Photocatalytic Degradation of Simazine Pollutant |
title_sort |
impact of tio<sub>2</sub> nanotubes’ morphology on the photocatalytic degradation of simazine pollutant |
publisher |
MDPI AG |
series |
Materials |
issn |
1996-1944 |
publishDate |
2018-10-01 |
description |
There are various approaches to enhancing the catalytic properties of TiO<sub>2</sub>, including modifying its morphology by altering the surface reactivity and surface area of the catalyst. In this study, the primary aim is to enhance the photocatalytic activity by changing the TiO<sub>2</sub> nanotubes’ architecture. The highly ordered infrastructure is favorable for a better charge carrier transfer. It is well known that anodization affects TiO<sub>2</sub> nanotubes’ structure by increasing the anodization duration which in turn influence the photocatalytic activity. The characterizations were conducted by FE-SEM (fiend emission scanning electron microscopy), XRD (X-ray diffraction), RAMAN (Raman spectroscopy), EDX (Energy dispersive X-ray spectroscopy), UV-Vis (Ultraviolet visible spectroscopy) and LCMS/MS/MS (liquid chromatography mass spectroscopy). We found that the morphological structure is affected by the anodization duration according to FE-SEM. The photocatalytic degradation shows a photodegradation rate of k = 0.0104 min<sup>−1</sup>. It is also found that a mineralization of Simazine by our prepared TiO<sub>2</sub> nanotubes leads to the formation of cyanuric acid. We propose three Simazine photodegradation pathways with several intermediates identified. |
topic |
TiO<sub>2</sub> nanotubes photocatalyst anodization Simazine photocatalytic photodegradation mechanism |
url |
https://www.mdpi.com/1996-1944/11/11/2066 |
work_keys_str_mv |
AT syazwanhananimeriamsuhaimy impactoftiosub2subnanotubesmorphologyonthephotocatalyticdegradationofsimazinepollutant AT chinweilai impactoftiosub2subnanotubesmorphologyonthephotocatalyticdegradationofsimazinepollutant AT hairulanuartajuddin impactoftiosub2subnanotubesmorphologyonthephotocatalyticdegradationofsimazinepollutant AT emymarlinasamsudin impactoftiosub2subnanotubesmorphologyonthephotocatalyticdegradationofsimazinepollutant AT mohdrafiejohan impactoftiosub2subnanotubesmorphologyonthephotocatalyticdegradationofsimazinepollutant |
_version_ |
1725550604212764672 |