Photocatalytic decomposition of acetaldehyde gas on TiO2-SiO2 thin film photocatalyst ― a kinetic analysis

TiO2-SiO2 thin film photocatalysts with 5 (TF95/5) and 10 w/w% (TF90/10) SiO2 contents have been prepared via sol-gel method. Characterization using X-ray diffractormeter and field emission scanning electron microscopy is performed to investigate the effect of SiO2 doping on the TiO2 thin film’s phy...

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Main Authors:	Abdul Aziz , Radhiyah, Sopyan, Iis
Format:	Article
Language:	English
Published:	National Institute of Science Communication and Information Resources (CSIR) 2013
Subjects:	TP1080 Polymers, plastics and their manufacture TP155 Chemical engineering
Online Access:	http://irep.iium.edu.my/29952/ http://irep.iium.edu.my/29952/ http://irep.iium.edu.my/29952/1/IJCT_20%282%29_137-144.pdf

id	iium-29952
recordtype	eprints
spelling	iium-299522016-12-08T01:40:45Z http://irep.iium.edu.my/29952/ Photocatalytic decomposition of acetaldehyde gas on TiO2-SiO2 thin film photocatalyst ― a kinetic analysis Abdul Aziz , Radhiyah Sopyan, Iis TP1080 Polymers, plastics and their manufacture TP155 Chemical engineering TiO2-SiO2 thin film photocatalysts with 5 (TF95/5) and 10 w/w% (TF90/10) SiO2 contents have been prepared via sol-gel method. Characterization using X-ray diffractormeter and field emission scanning electron microscopy is performed to investigate the effect of SiO2 doping on the TiO2 thin film’s physico-chemical properties. The photocatalytic performance of the thin films is evaluated using the degradation of acetaldehyde gas at various initial concentrations under fixed intensity UV irradiation. A Langmuir-Hinshelwood kinetic model is used to analyze the kinetics of the photocatalytic reaction. It is found that the first order reaction rate constant (k) of the TF95/5 thin film photocatalyst (1.2438 µmol dm-3 min-1) is higher than that of TF90/10 thin film (0.3648 µmol dm-3 min-1). This is attributed to higher crystallinity of the TF95/5 thin film, resulting in more active charge carrier generation. However, TF90/10 thin film photocatalyst with smaller TiO2 particles shows four times stronger adsorbability of acetaldehyde than TF95/5 due to its higher surface area. National Institute of Science Communication and Information Resources (CSIR) 2013-03 Article PeerReviewed application/pdf en http://irep.iium.edu.my/29952/1/IJCT_20%282%29_137-144.pdf Abdul Aziz , Radhiyah and Sopyan, Iis (2013) Photocatalytic decomposition of acetaldehyde gas on TiO2-SiO2 thin film photocatalyst ― a kinetic analysis. Indian Journal of Chemical Technology, 20 (2). pp. 137-144. ISSN 0975-0991 E-ISSN 0971-457X http://www.niscair.res.in/sciencecommunication/ResearchJournals/rejour/ijct/ijct0.asp
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	TP1080 Polymers, plastics and their manufacture TP155 Chemical engineering
spellingShingle	TP1080 Polymers, plastics and their manufacture TP155 Chemical engineering Abdul Aziz , Radhiyah Sopyan, Iis Photocatalytic decomposition of acetaldehyde gas on TiO2-SiO2 thin film photocatalyst ― a kinetic analysis
description	TiO2-SiO2 thin film photocatalysts with 5 (TF95/5) and 10 w/w% (TF90/10) SiO2 contents have been prepared via sol-gel method. Characterization using X-ray diffractormeter and field emission scanning electron microscopy is performed to investigate the effect of SiO2 doping on the TiO2 thin film’s physico-chemical properties. The photocatalytic performance of the thin films is evaluated using the degradation of acetaldehyde gas at various initial concentrations under fixed intensity UV irradiation. A Langmuir-Hinshelwood kinetic model is used to analyze the kinetics of the photocatalytic reaction. It is found that the first order reaction rate constant (k) of the TF95/5 thin film photocatalyst (1.2438 µmol dm-3 min-1) is higher than that of TF90/10 thin film (0.3648 µmol dm-3 min-1). This is attributed to higher crystallinity of the TF95/5 thin film, resulting in more active charge carrier generation. However, TF90/10 thin film photocatalyst with smaller TiO2 particles shows four times stronger adsorbability of acetaldehyde than TF95/5 due to its higher surface area.
format	Article
author	Abdul Aziz , Radhiyah Sopyan, Iis
author_facet	Abdul Aziz , Radhiyah Sopyan, Iis
author_sort	Abdul Aziz , Radhiyah
title	Photocatalytic decomposition of acetaldehyde gas on TiO2-SiO2 thin film photocatalyst ― a kinetic analysis
title_short	Photocatalytic decomposition of acetaldehyde gas on TiO2-SiO2 thin film photocatalyst ― a kinetic analysis
title_full	Photocatalytic decomposition of acetaldehyde gas on TiO2-SiO2 thin film photocatalyst ― a kinetic analysis
title_fullStr	Photocatalytic decomposition of acetaldehyde gas on TiO2-SiO2 thin film photocatalyst ― a kinetic analysis
title_full_unstemmed	Photocatalytic decomposition of acetaldehyde gas on TiO2-SiO2 thin film photocatalyst ― a kinetic analysis
title_sort	photocatalytic decomposition of acetaldehyde gas on tio2-sio2 thin film photocatalyst ― a kinetic analysis
publisher	National Institute of Science Communication and Information Resources (CSIR)
publishDate	2013
url	http://irep.iium.edu.my/29952/ http://irep.iium.edu.my/29952/ http://irep.iium.edu.my/29952/1/IJCT_20%282%29_137-144.pdf
first_indexed	2023-09-18T20:43:58Z
last_indexed	2023-09-18T20:43:58Z
_version_	1777409550990704640

Photocatalytic decomposition of acetaldehyde gas on TiO2-SiO2 thin film photocatalyst ― a kinetic analysis

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