Solvothermal Preparation of Nano-Sized CaWO4 Particles

Sulawan Kaowphong; Titipun Thongtem; Somchai Thongtem

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

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HomeSolid State PhenomenaSolid State Phenomena Vols. 124-126Solvothermal Preparation of Nano-Sized CaWO4...

Solvothermal Preparation of Nano-Sized CaWO₄ Particles

Abstract:

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.

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Periodical:

Solid State Phenomena (Volumes 124-126)

Pages:

1265-1268

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.124-126.1265

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Online since:

June 2007

Authors:

Sulawan Kaowphong, Titipun Thongtem, Somchai Thongtem

Keywords:

Glycerol/Water Ratios, Nano-Sized CaWO₄ Particles, Solvothermal Reaction

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