Solvothermal Preparation of Nano-Sized CaWO4 Particles

Abstract:

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CaWO4 was prepared by solvothermal reaction of Na2WO4.2H2O and calcium salts (CaCl2.2H2O, Ca(NO3)2.4H2O and Ca(CH3COO)2) in solvent containing a variety of glycerol/water ratios at 160 oC for 6 h. By using XRD, SEM, TEM and ED, the products compose of nano-sized CaWO4 particles with scheelite structure but different morphologies. Interplanar spaces between (101) planes were determined from HRTEM image, ED patterns and XRD spectra are 0.424, 0.474 and 0.476 nm, respectively. Luminescent intensities of the products prepared in pure water are the highest and their central peaks are the same at 444 nm. In addition, Ca, W and O were detected using EDX.

Info:

Periodical:

Solid State Phenomena (Volumes 124-126)

Edited by:

Byung Tae Ahn, Hyeongtag Jeon, Bo Young Hur, Kibae Kim and Jong Wan Park

Pages:

1265-1268

DOI:

10.4028/www.scientific.net/SSP.124-126.1265

Citation:

S. Kaowphong et al., "Solvothermal Preparation of Nano-Sized CaWO4 Particles", Solid State Phenomena, Vols. 124-126, pp. 1265-1268, 2007

Online since:

June 2007

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Price:

$35.00

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