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 , DOI https://doi.org/10.1179/143307511X13031890748173.
Full text not available from this repository.Abstract
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.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | FESEM Scheelite Sucrose solution evaporation Tungstate XRD Barium Calcination Crystalline materials Evaporation Field emission microscopes Lead Phase transitions Scanning electron microscopy Sugar (sucrose) Tungstate minerals Nanoparticles |
| Subjects: | Q Science > QD Chemistry |
| Divisions: | Faculty of Science > Department of Chemistry |
| Depositing User: | miss munirah saadom |
| Date Deposited: | 08 Jul 2013 00:47 |
| Last Modified: | 11 Dec 2014 06:46 |
| URI: | http://eprints.um.edu.my/id/eprint/6745 |
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