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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/9541/1/fist-2015-ridzuan-Synthesis%20and%20Characteristics.pdf
http://umpir.ump.edu.my/id/eprint/9541/
http://www.scientific.net/AMM.761.473
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spelling my.ump.umpir.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
institution Universiti Malaysia Pahang
building UMP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Pahang
content_source UMP Institutional Repository
url_provider http://umpir.ump.edu.my/
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/9541/1/fist-2015-ridzuan-Synthesis%20and%20Characteristics.pdf
http://umpir.ump.edu.my/id/eprint/9541/
http://www.scientific.net/AMM.761.473
_version_ 1643666154398416896
score 13.211869

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