Phase and surface area studies of maghemite nanoparticles dispersed in silica gel

First, the superparamagnetic maghemite nanoparticles were synthesised using Massart's procedure. Then, the nanocomposites of the synthesised maghemite nanoparticles and silica were produced by dispersing the as-synthesised maghemite nanoparticles into the silica xerogel prepared by sol-gel tech...

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Main Authors:	Ang, Beechin, Yaacob, Iskandar Idris, Wong, Yew Hoong
Format:	Article
Language:	English English
Published:	Maney Publishing 2014
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://irep.iium.edu.my/58507/ http://irep.iium.edu.my/58507/ http://irep.iium.edu.my/58507/ http://irep.iium.edu.my/58507/2/58507_Phase%20and%20surface%20area_scopus.pdf http://irep.iium.edu.my/58507/13/58507_Phase%20and%20surface%20area%20studies%20of%20maghemite.pdf

id	iium-58507
recordtype	eprints
spelling	iium-585072017-09-27T03:20:42Z http://irep.iium.edu.my/58507/ Phase and surface area studies of maghemite nanoparticles dispersed in silica gel Ang, Beechin Yaacob, Iskandar Idris Wong, Yew Hoong Wong, Yew Hoong TJ Mechanical engineering and machinery First, the superparamagnetic maghemite nanoparticles were synthesised using Massart's procedure. Then, the nanocomposites of the synthesised maghemite nanoparticles and silica were produced by dispersing the as-synthesised maghemite nanoparticles into the silica xerogel prepared by sol-gel technique. The system was then heated for 3 days at 140°C. The phase analysis performed using X-ray diffraction confirmed that the as-synthesised nanoparticles and the nanoparticles within the silica gel were maghemite. Surface characteristic of the nanocomposite was evaluated by N2 adsorption. The 'pure' silica gel and maghemite nanoparticles showed high values of surface area (150-160 m2 g1), while the surface area of nanocomposite was less than 40 m2 g1. This was probably due to the formation of dense structures caused by incorporation of maghemite nanoparticles within the pores of silica gel. The pore width increased with increasing content of maghemite nanoparticles. Maney Publishing 2014-12-18 Article PeerReviewed application/pdf en http://irep.iium.edu.my/58507/2/58507_Phase%20and%20surface%20area_scopus.pdf application/pdf en http://irep.iium.edu.my/58507/13/58507_Phase%20and%20surface%20area%20studies%20of%20maghemite.pdf Ang, Beechin and Yaacob, Iskandar Idris and Wong, Yew Hoong and Wong, Yew Hoong (2014) Phase and surface area studies of maghemite nanoparticles dispersed in silica gel. Materials Research Innovations, 18. S6-32-S6-35. ISSN 1432-8917 E-ISSN 1433-075X http://www.tandfonline.com/doi/abs/10.1179/1432891714Z.000000000927?journalCode=ymri20 10.1179/1432891714Z.000000000927
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Ang, Beechin Yaacob, Iskandar Idris Wong, Yew Hoong Wong, Yew Hoong Phase and surface area studies of maghemite nanoparticles dispersed in silica gel
description	First, the superparamagnetic maghemite nanoparticles were synthesised using Massart's procedure. Then, the nanocomposites of the synthesised maghemite nanoparticles and silica were produced by dispersing the as-synthesised maghemite nanoparticles into the silica xerogel prepared by sol-gel technique. The system was then heated for 3 days at 140°C. The phase analysis performed using X-ray diffraction confirmed that the as-synthesised nanoparticles and the nanoparticles within the silica gel were maghemite. Surface characteristic of the nanocomposite was evaluated by N2 adsorption. The 'pure' silica gel and maghemite nanoparticles showed high values of surface area (150-160 m2 g1), while the surface area of nanocomposite was less than 40 m2 g1. This was probably due to the formation of dense structures caused by incorporation of maghemite nanoparticles within the pores of silica gel. The pore width increased with increasing content of maghemite nanoparticles.
format	Article
author	Ang, Beechin Yaacob, Iskandar Idris Wong, Yew Hoong Wong, Yew Hoong
author_facet	Ang, Beechin Yaacob, Iskandar Idris Wong, Yew Hoong Wong, Yew Hoong
author_sort	Ang, Beechin
title	Phase and surface area studies of maghemite nanoparticles dispersed in silica gel
title_short	Phase and surface area studies of maghemite nanoparticles dispersed in silica gel
title_full	Phase and surface area studies of maghemite nanoparticles dispersed in silica gel
title_fullStr	Phase and surface area studies of maghemite nanoparticles dispersed in silica gel
title_full_unstemmed	Phase and surface area studies of maghemite nanoparticles dispersed in silica gel
title_sort	phase and surface area studies of maghemite nanoparticles dispersed in silica gel
publisher	Maney Publishing
publishDate	2014
url	http://irep.iium.edu.my/58507/ http://irep.iium.edu.my/58507/ http://irep.iium.edu.my/58507/ http://irep.iium.edu.my/58507/2/58507_Phase%20and%20surface%20area_scopus.pdf http://irep.iium.edu.my/58507/13/58507_Phase%20and%20surface%20area%20studies%20of%20maghemite.pdf
first_indexed	2023-09-18T21:22:44Z
last_indexed	2023-09-18T21:22:44Z
_version_	1777411989656567808

Phase and surface area studies of maghemite nanoparticles dispersed in silica gel

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