Staff View: Synthesis of silica nanoparticles by modified sol–gel process: the effect of mixing modes of the reactants and drying techniques

Synthesis of silica nanoparticles by modified sol–gel process: the effect of mixing modes of the reactants and drying techniques

A modified preparation of silica nanoparticles via sol–gel process was described. The ability to control the particle size and distribution was found highly dependent on mixing modes of the reactants and drying techniques. The mixture of tetraethoxysilane and ethanol followed by addition of water (M...

Full description

Saved in:

Bibliographic Details
Main Authors:	M. Jafarzadeh, I. A. Rahman, Coswald Stephen Sipaut @ Mohd Nasri
Format:	Article
Language:	English
Published:	Springer 2009
Subjects:	QD Chemistry
Online Access:	https://eprints.ums.edu.my/id/eprint/20277/1/Synthesis%20of%20silica%20nanoparticles%20by%20modified%20sol.pdf https://eprints.ums.edu.my/id/eprint/20277/
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my.ums.eprints.20277
record_format	eprints
spelling	my.ums.eprints.202772018-06-13T00:24:20Z https://eprints.ums.edu.my/id/eprint/20277/ Synthesis of silica nanoparticles by modified sol–gel process: the effect of mixing modes of the reactants and drying techniques M. Jafarzadeh I. A. Rahman Coswald Stephen Sipaut @ Mohd Nasri QD Chemistry A modified preparation of silica nanoparticles via sol–gel process was described. The ability to control the particle size and distribution was found highly dependent on mixing modes of the reactants and drying techniques. The mixture of tetraethoxysilane and ethanol followed by addition of water (Mode-A) produced monodispersed powder with an average particle size of 10.6 ± 1.40 nm with a narrow size distribution. The freeze drying technique (FD) further improved the quality of powder. In addition, the freeze dried samples have shown unique TGA decomposition steps which might be related to the well-defined structure of silica nanoparticles as compared to the heat dried samples. DSC analysis showed that FD preserved the silica surface with low shrinkage and generated remarkably well-order, narrow and bigger pore size and pore volume and also large endothermic enthalpies (ΔH FD = −688 J g−1 vs. ΔH HD = −617 J g−1) that lead to easy escape of physically adsorbed water from the pore at lower temperature. Springer 2009 Article PeerReviewed text en https://eprints.ums.edu.my/id/eprint/20277/1/Synthesis%20of%20silica%20nanoparticles%20by%20modified%20sol.pdf M. Jafarzadeh and I. A. Rahman and Coswald Stephen Sipaut @ Mohd Nasri (2009) Synthesis of silica nanoparticles by modified sol–gel process: the effect of mixing modes of the reactants and drying techniques. Journal of Sol-Gel Science and Technology, 50 (3). pp. 328-336. ISSN 0928-0707
institution	Universiti Malaysia Sabah
building	UMS Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaysia Sabah
content_source	UMS Institutional Repository
url_provider	http://eprints.ums.edu.my/
language	English
topic	QD Chemistry
spellingShingle	QD Chemistry M. Jafarzadeh I. A. Rahman Coswald Stephen Sipaut @ Mohd Nasri Synthesis of silica nanoparticles by modified sol–gel process: the effect of mixing modes of the reactants and drying techniques
description	A modified preparation of silica nanoparticles via sol–gel process was described. The ability to control the particle size and distribution was found highly dependent on mixing modes of the reactants and drying techniques. The mixture of tetraethoxysilane and ethanol followed by addition of water (Mode-A) produced monodispersed powder with an average particle size of 10.6 ± 1.40 nm with a narrow size distribution. The freeze drying technique (FD) further improved the quality of powder. In addition, the freeze dried samples have shown unique TGA decomposition steps which might be related to the well-defined structure of silica nanoparticles as compared to the heat dried samples. DSC analysis showed that FD preserved the silica surface with low shrinkage and generated remarkably well-order, narrow and bigger pore size and pore volume and also large endothermic enthalpies (ΔH FD = −688 J g−1 vs. ΔH HD = −617 J g−1) that lead to easy escape of physically adsorbed water from the pore at lower temperature.
format	Article
author	M. Jafarzadeh I. A. Rahman Coswald Stephen Sipaut @ Mohd Nasri
author_facet	M. Jafarzadeh I. A. Rahman Coswald Stephen Sipaut @ Mohd Nasri
author_sort	M. Jafarzadeh
title	Synthesis of silica nanoparticles by modified sol–gel process: the effect of mixing modes of the reactants and drying techniques
title_short	Synthesis of silica nanoparticles by modified sol–gel process: the effect of mixing modes of the reactants and drying techniques
title_full	Synthesis of silica nanoparticles by modified sol–gel process: the effect of mixing modes of the reactants and drying techniques
title_fullStr	Synthesis of silica nanoparticles by modified sol–gel process: the effect of mixing modes of the reactants and drying techniques
title_full_unstemmed	Synthesis of silica nanoparticles by modified sol–gel process: the effect of mixing modes of the reactants and drying techniques
title_sort	synthesis of silica nanoparticles by modified sol–gel process: the effect of mixing modes of the reactants and drying techniques
publisher	Springer
publishDate	2009
url	https://eprints.ums.edu.my/id/eprint/20277/1/Synthesis%20of%20silica%20nanoparticles%20by%20modified%20sol.pdf https://eprints.ums.edu.my/id/eprint/20277/
_version_	1760229693389275136
score	13.209306

Synthesis of silica nanoparticles by modified sol–gel process: the effect of mixing modes of the reactants and drying techniques

Similar Items