Synthesis and Characteristics of Mesoporous SBA-15 Influence by HMTA as an Internal pH Modifier

SBA-15 mesoporous silica was directly synthesised under difference acidic conditions by a “pH modification method” using hexamethylenetetramine (HMTA) as an internal pH-modifier. The synthesised material has been characterised by XRD, Nitrogen adsorption–desorption, and TEM. The characterisation res...

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Main Authors:	Mohd Haizal, Mohd Husin, Mohd Ridzuan, Nordin, Imran Syakir, Mohamad, Jin Lin, Li
Format:	Article
Language:	English
Published:	Trans Tech Publications, Switzerland 2015
Subjects:	Q Science (General)
Online Access:	http://umpir.ump.edu.my/id/eprint/9541/ http://umpir.ump.edu.my/id/eprint/9541/ http://umpir.ump.edu.my/id/eprint/9541/ http://umpir.ump.edu.my/id/eprint/9541/1/fist-2015-ridzuan-Synthesis%20and%20Characteristics.pdf

id	ump-9541
recordtype	eprints
spelling	ump-95412018-11-29T09:17:04Z http://umpir.ump.edu.my/id/eprint/9541/ Synthesis and Characteristics of Mesoporous SBA-15 Influence by HMTA as an Internal pH Modifier Mohd Haizal, Mohd Husin Mohd Ridzuan, Nordin Imran Syakir, Mohamad Jin Lin, Li Q Science (General) SBA-15 mesoporous silica was directly synthesised under difference acidic conditions by a “pH modification method” using hexamethylenetetramine (HMTA) as an internal pH-modifier. The synthesised material has been characterised by XRD, Nitrogen adsorption–desorption, and TEM. The characterisation results showed that mesoporous silica lead to high-ordered hexagonal mesoporous morphology by TEM at high acidity compared to low acidity condition. In addition, the physical properties of SBA-15 showed a decrease of surface area and pore size due to the increase in the pH. Use of HMTA as pH modifier is suitable, due to pH value increases occurred in the hydrothermal processes only. This is because during the hydrothermal process at a temperature of 100°C, HMTA decomposes to NH3 which in turn increase of the pH value in the silica gel. It can be concluded that the formation of mesoporous silica SBA-15 to some extent been influenced by the pH value. This can be seen from the results of the study show that mesoporous silica type SBA-15 lead to well-ordered hexagonal mesoporous at high acidity and poor order hexagonal pore structure was formed in low acidity condition. Trans Tech Publications, Switzerland 2015 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/9541/1/fist-2015-ridzuan-Synthesis%20and%20Characteristics.pdf Mohd Haizal, Mohd Husin and Mohd Ridzuan, Nordin and Imran Syakir, Mohamad and Jin Lin, Li (2015) Synthesis and Characteristics of Mesoporous SBA-15 Influence by HMTA as an Internal pH Modifier. Applied Mechanics and Materials, 761. pp. 473-478. ISSN 1662-7482 http://www.scientific.net/AMM.761.473 DOI: 10.4028/www.scientific.net/AMM.761.473
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	Q Science (General)
spellingShingle	Q Science (General) Mohd Haizal, Mohd Husin Mohd Ridzuan, Nordin Imran Syakir, Mohamad Jin Lin, Li Synthesis and Characteristics of Mesoporous SBA-15 Influence by HMTA as an Internal pH Modifier
description	SBA-15 mesoporous silica was directly synthesised under difference acidic conditions by a “pH modification method” using hexamethylenetetramine (HMTA) as an internal pH-modifier. The synthesised material has been characterised by XRD, Nitrogen adsorption–desorption, and TEM. The characterisation results showed that mesoporous silica lead to high-ordered hexagonal mesoporous morphology by TEM at high acidity compared to low acidity condition. In addition, the physical properties of SBA-15 showed a decrease of surface area and pore size due to the increase in the pH. Use of HMTA as pH modifier is suitable, due to pH value increases occurred in the hydrothermal processes only. This is because during the hydrothermal process at a temperature of 100°C, HMTA decomposes to NH3 which in turn increase of the pH value in the silica gel. It can be concluded that the formation of mesoporous silica SBA-15 to some extent been influenced by the pH value. This can be seen from the results of the study show that mesoporous silica type SBA-15 lead to well-ordered hexagonal mesoporous at high acidity and poor order hexagonal pore structure was formed in low acidity condition.
format	Article
author	Mohd Haizal, Mohd Husin Mohd Ridzuan, Nordin Imran Syakir, Mohamad Jin Lin, Li
author_facet	Mohd Haizal, Mohd Husin Mohd Ridzuan, Nordin Imran Syakir, Mohamad Jin Lin, Li
author_sort	Mohd Haizal, Mohd Husin
title	Synthesis and Characteristics of Mesoporous SBA-15 Influence by HMTA as an Internal pH Modifier
title_short	Synthesis and Characteristics of Mesoporous SBA-15 Influence by HMTA as an Internal pH Modifier
title_full	Synthesis and Characteristics of Mesoporous SBA-15 Influence by HMTA as an Internal pH Modifier
title_fullStr	Synthesis and Characteristics of Mesoporous SBA-15 Influence by HMTA as an Internal pH Modifier
title_full_unstemmed	Synthesis and Characteristics of Mesoporous SBA-15 Influence by HMTA as an Internal pH Modifier
title_sort	synthesis and characteristics of mesoporous sba-15 influence by hmta as an internal ph modifier
publisher	Trans Tech Publications, Switzerland
publishDate	2015
url	http://umpir.ump.edu.my/id/eprint/9541/ http://umpir.ump.edu.my/id/eprint/9541/ http://umpir.ump.edu.my/id/eprint/9541/ http://umpir.ump.edu.my/id/eprint/9541/1/fist-2015-ridzuan-Synthesis%20and%20Characteristics.pdf
first_indexed	2023-09-18T22:08:12Z
last_indexed	2023-09-18T22:08:12Z
_version_	1777414850888073216

Synthesis and Characteristics of Mesoporous SBA-15 Influence by HMTA as an Internal pH Modifier

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