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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2014
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my.iium.irep.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 REM 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 http://www.tandfonline.com/doi/abs/10.1179/1432891714Z.000000000927?journalCode=ymri20 10.1179/1432891714Z.000000000927 |
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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/58507/2/58507_Phase%20and%20surface%20area_scopus.pdf http://irep.iium.edu.my/58507/13/58507_Phase%20and%20surface%20area%20studies%20of%20maghemite.pdf http://irep.iium.edu.my/58507/ http://www.tandfonline.com/doi/abs/10.1179/1432891714Z.000000000927?journalCode=ymri20 |
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1643615370394730496 |
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13.211869 |