Synthesis of Ti02 N anosized Powder Photocatalyst Via Solgel Method for Bacteria Inactivation Application

Titanium dioxide (Ti02) is the most widely used photocatalyst and has been applied for water and air purification and disinfection of microorganism. Anatase structured Ti02 is a wide bandgap (3.2 eV) semiconductor which, under UV light, is able to degrade chemicals and cell components of microorg...

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Main Authors:	Diana, Farah, Iis, Sopyan, Mel, Maizirwan
Format:	Article
Language:	English
Published:	Universiti Putra Malaysia 2011
Subjects:	TP155 Chemical engineering TP248.13 Biotechnology
Online Access:	http://irep.iium.edu.my/21752/ http://irep.iium.edu.my/21752/1/Malaysian_J_of_Microscopy_2011.pdf

id	iium-21752
recordtype	eprints
spelling	iium-217522013-03-20T09:34:42Z http://irep.iium.edu.my/21752/ Synthesis of Ti02 N anosized Powder Photocatalyst Via Solgel Method for Bacteria Inactivation Application Diana, Farah Iis, Sopyan Mel, Maizirwan TP155 Chemical engineering TP248.13 Biotechnology Titanium dioxide (Ti02) is the most widely used photocatalyst and has been applied for water and air purification and disinfection of microorganism. Anatase structured Ti02 is a wide bandgap (3.2 eV) semiconductor which, under UV light, is able to degrade chemicals and cell components of microorganisms. In this study, Ti02 nanopowder photocatalyst was synthesized by sol-gel process using a titanium chelate compound, titanium (di-isopropoxide) bis(acetylacetonate) (PTP) as the precursor. The precursor was hydrolyzed under an acidic catalyst condition, followed by reflux for 15 minutes and 1 hour. The precipitate powder obtained after filtration was calcined at 400°C. XRD analysis confirmed that the Ti02 powders A (15 minutes reflux) and B (1 hour reflux) have strongest peak at 25° which indicates anatase crystal structure. The particle size of powder A was smaller than the powder B as proved by calculation using Scherrer's equation. The crystallization temperature of Ti02 powder A was higher due to its smaller particles that needed more heat to crystallize than powder B as confirmed by TGIDTA. FESEM analysis showed powder A have homogenous spherical shape, contrast to powder B showing inhomogenous spherical shape and connected particle. The Ti02 photocatalyst activity in killing bacteria was investigated for 5 hours by varying the concentration 'of Ti02 and UV light intensity. Universiti Putra Malaysia 2011 Article PeerReviewed application/pdf en http://irep.iium.edu.my/21752/1/Malaysian_J_of_Microscopy_2011.pdf Diana, Farah and Iis, Sopyan and Mel, Maizirwan (2011) Synthesis of Ti02 N anosized Powder Photocatalyst Via Solgel Method for Bacteria Inactivation Application. Malaysian Journal of Microscopy, 7. pp. 161-169. ISSN 1823-7010
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	TP155 Chemical engineering TP248.13 Biotechnology
spellingShingle	TP155 Chemical engineering TP248.13 Biotechnology Diana, Farah Iis, Sopyan Mel, Maizirwan Synthesis of Ti02 N anosized Powder Photocatalyst Via Solgel Method for Bacteria Inactivation Application
description	Titanium dioxide (Ti02) is the most widely used photocatalyst and has been applied for water and air purification and disinfection of microorganism. Anatase structured Ti02 is a wide bandgap (3.2 eV) semiconductor which, under UV light, is able to degrade chemicals and cell components of microorganisms. In this study, Ti02 nanopowder photocatalyst was synthesized by sol-gel process using a titanium chelate compound, titanium (di-isopropoxide) bis(acetylacetonate) (PTP) as the precursor. The precursor was hydrolyzed under an acidic catalyst condition, followed by reflux for 15 minutes and 1 hour. The precipitate powder obtained after filtration was calcined at 400°C. XRD analysis confirmed that the Ti02 powders A (15 minutes reflux) and B (1 hour reflux) have strongest peak at 25° which indicates anatase crystal structure. The particle size of powder A was smaller than the powder B as proved by calculation using Scherrer's equation. The crystallization temperature of Ti02 powder A was higher due to its smaller particles that needed more heat to crystallize than powder B as confirmed by TGIDTA. FESEM analysis showed powder A have homogenous spherical shape, contrast to powder B showing inhomogenous spherical shape and connected particle. The Ti02 photocatalyst activity in killing bacteria was investigated for 5 hours by varying the concentration 'of Ti02 and UV light intensity.
format	Article
author	Diana, Farah Iis, Sopyan Mel, Maizirwan
author_facet	Diana, Farah Iis, Sopyan Mel, Maizirwan
author_sort	Diana, Farah
title	Synthesis of Ti02 N anosized Powder Photocatalyst Via Solgel Method for Bacteria Inactivation Application
title_short	Synthesis of Ti02 N anosized Powder Photocatalyst Via Solgel Method for Bacteria Inactivation Application
title_full	Synthesis of Ti02 N anosized Powder Photocatalyst Via Solgel Method for Bacteria Inactivation Application
title_fullStr	Synthesis of Ti02 N anosized Powder Photocatalyst Via Solgel Method for Bacteria Inactivation Application
title_full_unstemmed	Synthesis of Ti02 N anosized Powder Photocatalyst Via Solgel Method for Bacteria Inactivation Application
title_sort	synthesis of ti02 n anosized powder photocatalyst via solgel method for bacteria inactivation application
publisher	Universiti Putra Malaysia
publishDate	2011
url	http://irep.iium.edu.my/21752/ http://irep.iium.edu.my/21752/1/Malaysian_J_of_Microscopy_2011.pdf
first_indexed	2023-09-18T20:33:11Z
last_indexed	2023-09-18T20:33:11Z
_version_	1777408872782233600

Synthesis of Ti02 N anosized Powder Photocatalyst Via Solgel Method for Bacteria Inactivation Application

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