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Preparation and characterisation of tungstate scheelite structured nanoparticles

A series of tungstate scheelite structured MWO 4 (M=Ca, Sr, Pb and Ba) were synthesised using the sucrose solution evaporation method. Characterisation of these materials revealed that nanoparticles were formed, with the calcination temperature >400°C. The nanoparticle powders formed are cry...

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Main Authors: Zawawi, S.M.M., Yahya, R., Hassan, A., Daud, M.N.
Format: Article
Published: 2011
Subjects:
QD Chemistry
Online Access:http://eprints.um.edu.my/6745/
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spelling my.um.eprints.67452014-12-11T06:46:52Z http://eprints.um.edu.my/6745/ Preparation and characterisation of tungstate scheelite structured nanoparticles Zawawi, S.M.M. Yahya, R. Hassan, A. Daud, M.N. QD Chemistry A series of tungstate scheelite structured MWO 4 (M=Ca, Sr, Pb and Ba) were synthesised using the sucrose solution evaporation method. Characterisation of these materials revealed that nanoparticles were formed, with the calcination temperature >400°C. The nanoparticle powders formed are crystalline and exist in its pure phase. It is found that the degree of crystalline products is low with the decrease in ionic radius (Ca<Sr<Pb<Ba), and also, diffraction peaks at the plane (112), (004) and (204) are shifted to lower angles (2θ) in accordance to the reduction in dhkl spacing. The S BET value of CaWO 4 gave the highest surface area (277·53 m 2 g -1) in the observed nanosize grain obtained from the field emission scanning electron microscopy image. 2011 Article PeerReviewed Zawawi, S.M.M. and Yahya, R. and Hassan, A. and Daud, M.N. (2011) Preparation and characterisation of tungstate scheelite structured nanoparticles. Materials Research Innovations, 15 (SUPPL.). S97-S100. ISSN 14328917 10.1179/143307511X13031890748173
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic QD Chemistry
spellingShingle QD Chemistry
Zawawi, S.M.M.
Yahya, R.
Hassan, A.
Daud, M.N.
Preparation and characterisation of tungstate scheelite structured nanoparticles
description A series of tungstate scheelite structured MWO 4 (M=Ca, Sr, Pb and Ba) were synthesised using the sucrose solution evaporation method. Characterisation of these materials revealed that nanoparticles were formed, with the calcination temperature >400°C. The nanoparticle powders formed are crystalline and exist in its pure phase. It is found that the degree of crystalline products is low with the decrease in ionic radius (Ca<Sr<Pb<Ba), and also, diffraction peaks at the plane (112), (004) and (204) are shifted to lower angles (2θ) in accordance to the reduction in dhkl spacing. The S BET value of CaWO 4 gave the highest surface area (277·53 m 2 g -1) in the observed nanosize grain obtained from the field emission scanning electron microscopy image.
format Article
author Zawawi, S.M.M.
Yahya, R.
Hassan, A.
Daud, M.N.
author_facet Zawawi, S.M.M.
Yahya, R.
Hassan, A.
Daud, M.N.
author_sort Zawawi, S.M.M.
title Preparation and characterisation of tungstate scheelite structured nanoparticles
title_short Preparation and characterisation of tungstate scheelite structured nanoparticles
title_full Preparation and characterisation of tungstate scheelite structured nanoparticles
title_fullStr Preparation and characterisation of tungstate scheelite structured nanoparticles
title_full_unstemmed Preparation and characterisation of tungstate scheelite structured nanoparticles
title_sort preparation and characterisation of tungstate scheelite structured nanoparticles
publishDate 2011
url http://eprints.um.edu.my/6745/
_version_ 1643687869587390464
score 13.223943

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